Three monitors with Nvidia 8800GTs

[HomerJaySimpson]

I'm not sure where to ask. I have a Mac Pro running Mint. I had installed a Nvidia GeForce 8800 GT Video card to drive two monitors.I had everything working great using the nvidia proprietary driver.

I was given a extra monitor and the same Nvidia GeForce 8800 GT Video card to drive a third monitor. When i installed it and ran the Nvidia config program it showed the third monitor disabled. The original two monitors worked fine im not sure what it means but they were configured under xscreen 0. When i disabled the third monitor, it showed it as configured under xscreen 1.

When i rebooted the third monitor came up, but when Cinnamon launches it states it is in fallback mode. I know the monitor and card works, because it works under fisher price os (Mac OSX).

I have no idea what logs to look at. Where to even begin to troubleshoot. Any help would be great.

Thanks.

[roblm]

The methods that have a higher chance of success for displaying 3 monitors are:

1. Get a new Nvidia or AMD card that supports 3 connected displays. For example, the GeForce GT 720 for $41 and the AMD/ATI Radeon HD 5450 for $29, at Amazon.
2. Use Mint MATE.

According to Nvidia on THIS WEB PAGE, using two identical Nvidia GPUs using X.Org's Xinerama extension should work in displaying 3 monitors. Post this additional information.

1. With all 3 monitors connected, create an xorg.conf file by using this command in the Terminal:

Code: Select all

sudo nvidia-xconfig

If you already have an xorg.conf file, then post it. Use these commands:

2. inxi -Fx
3. xrandr

4. The brand and model number of the 3 monitors, how they are connected (I assume DVI?), and any adapters being used.

5. Then use this command to open the “Xorg.0.log” file:

Code: Select all

gedit /var/log/Xorg.0.log

Press Ctrl+A to select the entire file contents. Right click on the screen and select “Copy”. Don't save it to a file. Open the Mint Forum reply window and select “Code”
in the menu. Paste the copied lines between the two code words. If you have problems posting that long file, then upload it to pastebin.com by using this command:

Code: Select all

pastebin /var/log/Xorg.0.log	

Post the URL link that displays in the Terminal window. For Mint 17 users, first install pastebinit with this command:

Code: Select all

sudo apt-get install pastebinit

Then upload the file with this command:

Code: Select all

pastebinit /var/log/Xorg.0.log

[HomerJaySimpson]

on the xrandr i could not get the last monitor to show unless i did a xrandr --screen 1 and i included it in this document. I also have 3 viewsonic monitors models VS13860.

Thanks for all your help.

Code: Select all

System:    Host: kaufmanm-MacPro Kernel: 3.13.0-37-generic x86_64 (64 bit, gcc: 4.8.2) 
           Desktop: N/A Distro: Linux Mint 17.1 Rebecca
Machine:   System: Apple product: MacPro3 1 version: 1.0 serial: G88383VUXYL 
           Mobo: Apple model: Mac-F42C88C8 version: Proto1 Bios: Apple version: MP31.88Z.006C.B05.0802291410 date: 02/29/08
CPU(s):    2 Quad core Intel Xeon CPU E5462s (-HT-MCP-SMP-) cache: 12288 KB flags: (lm nx sse sse2 sse3 sse4_1 ssse3 vmx) bmips: 44688.2 
           Clock Speeds: 1: 2400.00 MHz 2: 2400.00 MHz 3: 2400.00 MHz 4: 2400.00 MHz 5: 2400.00 MHz 6: 2400.00 MHz 7: 2400.00 MHz 8: 2400.00 MHz
Graphics:  Card-1: NVIDIA G92 [GeForce 8800 GT] bus-ID: 01:00.0 
           Card-2: NVIDIA G92 [GeForce 8800 GT] bus-ID: 02:00.0 
           X.org: 1.15.1 driver: nvidia tty size: 152x24 Advanced Data: N/A for root 
Audio:     Card: Intel 631xESB/632xESB High Definition Audio Controller driver: snd_hda_intel bus-ID: 00:1b.0
           Sound: Advanced Linux Sound Architecture ver: k3.13.0-37-generic
Network:   Card-1: Intel 80003ES2LAN Gigabit Ethernet Controller (Copper) 
           driver: e1000e ver: 2.3.2-k port: 1020 bus-ID: 07:00.0
           IF: eth0 state: up speed: 1000 Mbps duplex: full mac: 00:1f:5b:3a:86:0c
           Card-2: Intel 80003ES2LAN Gigabit Ethernet Controller (Copper) 
           driver: e1000e ver: 2.3.2-k port: 1000 bus-ID: 07:00.1
           IF: eth1 state: down mac: 00:1f:5b:3a:86:0d
Drives:    HDD Total Size: 2500.5GB (0.3% used) 1: id: /dev/sda model: Samsung_SSD_850 size: 500.1GB temp: 0C 
           2: id: /dev/sdc model: Hitachi_HDS72101 size: 1000.2GB temp: 37C 3: id: /dev/sdb model: Hitachi_HDS72101 size: 1000.2GB temp: 39C 
Partition: ID: / size: 223G used: 7.0G (4%) fs: ext4 ID: swap-1 size: 6.00GB used: 0.00GB (0%) fs: swap 
RAID:      No RAID devices detected - /proc/mdstat and md_mod kernel raid module present
Sensors:   System Temperatures: cpu: 46.0C mobo: N/A gpu: 0.0:71C 0.1:61C 
           Fan Speeds (in rpm): cpu: 498 
Info:      Processes: 198 Uptime: 1:17 Memory: 903.4/18055.2MB Runlevel: 2 Gcc sys: 4.8.2 Client: Shell inxi: 1.8.4 


Screen 0: minimum 8 x 8, current 3840 x 1080, maximum 8192 x 8192
DVI-I-0 disconnected (normal left inverted right x axis y axis)
DVI-I-1 disconnected (normal left inverted right x axis y axis)
DVI-I-2 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 521mm x 293mm
   1920x1080      60.0*+
   1680x1050      60.0  
   1600x1200      60.0  
   1440x900       59.9  
   1280x1024      75.0     60.0  
   1280x960       60.0  
   1280x800       74.9     59.8  
   1152x864       75.0  
   1024x768       75.0     70.1     60.0  
   800x600        75.0     72.2     60.3     56.2  
   640x480        75.0     72.8     59.9  
DVI-I-3 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 521mm x 293mm
   1920x1080      60.0*+
   1680x1050      60.0  
   1600x1200      60.0  
   1440x900       59.9  
   1280x1024      75.0     60.0  
   1280x960       60.0  
   1280x800       74.9     59.8  
   1152x864       75.0  
   1024x768       75.0     70.1     60.0  
   800x600        75.0     72.2     60.3     56.2  
   640x480        75.0     72.8     59.9  

xrandr --screen 1
Screen 1: minimum 8 x 8, current 1920 x 1080, maximum 8192 x 8192
DVI-I-0 disconnected primary (normal left inverted right x axis y axis)
DVI-I-1 disconnected (normal left inverted right x axis y axis)
DVI-I-2 disconnected (normal left inverted right x axis y axis)
DVI-I-3 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 521mm x 293mm
   1920x1080      60.0*+
   1680x1050      60.0  
   1600x1200      60.0  
   1440x900       59.9  
   1280x1024      75.0     60.0  
   1280x960       60.0  
   1280x800       74.9     59.8  
   1152x864       75.0  
   1024x768       75.0     70.1     60.0  
   800x600        75.0     72.2     60.3     56.2  
   640x480        75.0     72.8     59.9  




[  4537.493] 
X.Org X Server 1.15.1
Release Date: 2014-04-13
[  4537.493] X Protocol Version 11, Revision 0
[  4537.493] Build Operating System: Linux 3.2.0-76-generic x86_64 Ubuntu
[  4537.493] Current Operating System: Linux kaufmanm-MacPro 3.13.0-37-generic #64-Ubuntu SMP Mon Sep 22 21:28:38 UTC 2014 x86_64
[  4537.493] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-3.13.0-37-generic root=UUID=e16b0b97-7038-4700-aa64-d61935034e73 ro quiet splash
[  4537.493] Build Date: 12 February 2015  02:49:29PM
[  4537.493] xorg-server 2:1.15.1-0ubuntu2.7 (For technical support please see http://www.ubuntu.com/support) 
[  4537.493] Current version of pixman: 0.30.2
[  4537.493] 	Before reporting problems, check http://wiki.x.org
	to make sure that you have the latest version.
[  4537.493] Markers: (--) probed, (**) from config file, (==) default setting,
	(++) from command line, (!!) notice, (II) informational,
	(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[  4537.493] (==) Log file: "/var/log/Xorg.0.log", Time: Mon May 11 13:59:55 2015
[  4537.493] (==) Using config file: "/etc/X11/xorg.conf"
[  4537.493] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[  4537.494] (==) ServerLayout "Layout0"
[  4537.494] (**) |-->Screen "Screen0" (0)
[  4537.494] (**) |   |-->Monitor "Monitor0"
[  4537.494] (**) |   |-->Device "Device0"
[  4537.494] (**) |-->Screen "Screen1" (1)
[  4537.494] (**) |   |-->Monitor "Monitor1"
[  4537.494] (**) |   |-->Device "Device1"
[  4537.494] (**) |-->Input Device "Keyboard0"
[  4537.494] (**) |-->Input Device "Mouse0"
[  4537.494] (**) Option "Xinerama" "0"
[  4537.494] (==) Automatically adding devices
[  4537.494] (==) Automatically enabling devices
[  4537.494] (==) Automatically adding GPU devices
[  4537.494] (WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist.
[  4537.494] 	Entry deleted from font path.
[  4537.494] (WW) The directory "/usr/share/fonts/X11/100dpi/" does not exist.
[  4537.494] 	Entry deleted from font path.
[  4537.494] (WW) The directory "/usr/share/fonts/X11/75dpi/" does not exist.
[  4537.494] 	Entry deleted from font path.
[  4537.494] (WW) The directory "/usr/share/fonts/X11/100dpi" does not exist.
[  4537.494] 	Entry deleted from font path.
[  4537.494] (WW) The directory "/usr/share/fonts/X11/75dpi" does not exist.
[  4537.494] 	Entry deleted from font path.
[  4537.494] (==) FontPath set to:
	/usr/share/fonts/X11/misc,
	/usr/share/fonts/X11/Type1,
	built-ins
[  4537.494] (==) ModulePath set to "/usr/lib/x86_64-linux-gnu/xorg/extra-modules,/usr/lib/xorg/extra-modules,/usr/lib/xorg/modules"
[  4537.494] (WW) Hotplugging is on, devices using drivers 'kbd', 'mouse' or 'vmmouse' will be disabled.
[  4537.494] (WW) Disabling Keyboard0
[  4537.494] (WW) Disabling Mouse0
[  4537.494] (II) Loader magic: 0x7f90788dfd40
[  4537.494] (II) Module ABI versions:
[  4537.494] 	X.Org ANSI C Emulation: 0.4
[  4537.494] 	X.Org Video Driver: 15.0
[  4537.494] 	X.Org XInput driver : 20.0
[  4537.494] 	X.Org Server Extension : 8.0
[  4537.495] (II) xfree86: Adding drm device (/dev/dri/card0)
[  4537.495] (II) xfree86: Adding drm device (/dev/dri/card1)
[  4537.497] (--) PCI: (0:1:0:0) 10de:0602:10de:057c rev 162, Mem @ 0xa6000000/16777216, 0x80000000/268435456, 0xa4000000/33554432, I/O @ 0x00003000/128, BIOS @ 0x????????/131072
[  4537.497] (--) PCI:*(0:2:0:0) 10de:0602:10de:057c rev 162, Mem @ 0xa2000000/16777216, 0x90000000/268435456, 0xa0000000/33554432, I/O @ 0x00002000/128, BIOS @ 0x????????/131072
[  4537.497] Initializing built-in extension Generic Event Extension
[  4537.497] Initializing built-in extension SHAPE
[  4537.497] Initializing built-in extension MIT-SHM
[  4537.497] Initializing built-in extension XInputExtension
[  4537.497] Initializing built-in extension XTEST
[  4537.497] Initializing built-in extension BIG-REQUESTS
[  4537.497] Initializing built-in extension SYNC
[  4537.497] Initializing built-in extension XKEYBOARD
[  4537.497] Initializing built-in extension XC-MISC
[  4537.497] Initializing built-in extension SECURITY
[  4537.497] Initializing built-in extension XINERAMA
[  4537.497] Initializing built-in extension XFIXES
[  4537.497] Initializing built-in extension RENDER
[  4537.497] Initializing built-in extension RANDR
[  4537.497] Initializing built-in extension COMPOSITE
[  4537.497] Initializing built-in extension DAMAGE
[  4537.497] Initializing built-in extension MIT-SCREEN-SAVER
[  4537.497] Initializing built-in extension DOUBLE-BUFFER
[  4537.497] Initializing built-in extension RECORD
[  4537.497] Initializing built-in extension DPMS
[  4537.497] Initializing built-in extension Present
[  4537.497] Initializing built-in extension DRI3
[  4537.497] Initializing built-in extension X-Resource
[  4537.497] Initializing built-in extension XVideo
[  4537.497] Initializing built-in extension XVideo-MotionCompensation
[  4537.497] Initializing built-in extension SELinux
[  4537.497] Initializing built-in extension XFree86-VidModeExtension
[  4537.497] Initializing built-in extension XFree86-DGA
[  4537.497] Initializing built-in extension XFree86-DRI
[  4537.497] Initializing built-in extension DRI2
[  4537.497] (WW) "glamoregl" will not be loaded unless you've specified it to be loaded elsewhere.
[  4537.497] (II) "glx" will be loaded by default.
[  4537.497] (WW) "xmir" is not to be loaded by default. Skipping.
[  4537.497] (II) LoadModule: "glx"
[  4537.497] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so
[  4537.517] (II) Module glx: vendor="NVIDIA Corporation"
[  4537.517] 	compiled for 4.0.2, module version = 1.0.0
[  4537.517] 	Module class: X.Org Server Extension
[  4537.517] (II) NVIDIA GLX Module  340.32  Tue Aug  5 20:32:43 PDT 2014
[  4537.517] Loading extension GLX
[  4537.517] (II) LoadModule: "nvidia"
[  4537.517] (II) Loading /usr/lib/xorg/modules/drivers/nvidia_drv.so
[  4537.517] (II) Module nvidia: vendor="NVIDIA Corporation"
[  4537.517] 	compiled for 4.0.2, module version = 1.0.0
[  4537.517] 	Module class: X.Org Video Driver
[  4537.517] (II) NVIDIA dlloader X Driver  340.32  Tue Aug  5 20:13:04 PDT 2014
[  4537.517] (II) NVIDIA Unified Driver for all Supported NVIDIA GPUs
[  4537.517] (++) using VT number 7

[  4537.519] (II) Loading sub module "fb"
[  4537.519] (II) LoadModule: "fb"
[  4537.519] (II) Loading /usr/lib/xorg/modules/libfb.so
[  4537.519] (II) Module fb: vendor="X.Org Foundation"
[  4537.519] 	compiled for 1.15.1, module version = 1.0.0
[  4537.519] 	ABI class: X.Org ANSI C Emulation, version 0.4
[  4537.519] (WW) Unresolved symbol: fbGetGCPrivateKey
[  4537.519] (II) Loading sub module "wfb"
[  4537.519] (II) LoadModule: "wfb"
[  4537.519] (II) Loading /usr/lib/xorg/modules/libwfb.so
[  4537.520] (II) Module wfb: vendor="X.Org Foundation"
[  4537.520] 	compiled for 1.15.1, module version = 1.0.0
[  4537.520] 	ABI class: X.Org ANSI C Emulation, version 0.4
[  4537.520] (II) Loading sub module "ramdac"
[  4537.520] (II) LoadModule: "ramdac"
[  4537.520] (II) Module "ramdac" already built-in
[  4537.520] (**) NVIDIA(0): Depth 24, (--) framebuffer bpp 32
[  4537.520] (==) NVIDIA(0): RGB weight 888
[  4537.520] (==) NVIDIA(0): Default visual is TrueColor
[  4537.520] (==) NVIDIA(0): Using gamma correction (1.0, 1.0, 1.0)
[  4537.520] (**) NVIDIA(0): Option "Stereo" "0"
[  4537.520] (**) NVIDIA(0): Option "nvidiaXineramaInfoOrder" "DFP-0"
[  4537.520] (**) NVIDIA(0): Option "SLI" "Off"
[  4537.520] (**) NVIDIA(0): Option "MultiGPU" "Off"
[  4537.520] (**) NVIDIA(0): Option "BaseMosaic" "off"
[  4537.520] (**) NVIDIA(0): Stereo disabled by request
[  4537.520] (**) NVIDIA(0): NVIDIA SLI disabled.
[  4537.520] (**) NVIDIA(0): NVIDIA Multi-GPU disabled.
[  4537.520] (**) NVIDIA(0): Option "MetaModes" "DVI-I-2: nvidia-auto-select +0+0, DVI-I-3: nvidia-auto-select +1920+0"
[  4537.520] (**) NVIDIA(0): Enabling 2D acceleration
[  4538.047] (II) NVIDIA(0): Display (ViewSonic VA2448 SERIES (DFP-0)) does not support
[  4538.047] (II) NVIDIA(0):     NVIDIA 3D Vision stereo.
[  4538.068] (II) NVIDIA(0): Display (ViewSonic VA2448 SERIES (DFP-1)) does not support
[  4538.068] (II) NVIDIA(0):     NVIDIA 3D Vision stereo.
[  4538.068] (II) NVIDIA(GPU-0): Found DRM driver nvidia-drm (20130102)
[  4538.073] (II) NVIDIA(0): NVIDIA GPU GeForce 8800 GT (G92) at PCI:2:0:0 (GPU-0)
[  4538.073] (--) NVIDIA(0): Memory: 524288 kBytes
[  4538.073] (--) NVIDIA(0): VideoBIOS: 62.92.20.00.16
[  4538.073] (II) NVIDIA(0): Detected PCI Express Link width: 16X
[  4538.080] (--) NVIDIA(0): Valid display device(s) on GeForce 8800 GT at PCI:2:0:0
[  4538.080] (--) NVIDIA(0):     CRT-0
[  4538.080] (--) NVIDIA(0):     CRT-1
[  4538.080] (--) NVIDIA(0):     ViewSonic VA2448 SERIES (DFP-0) (boot, connected)
[  4538.080] (--) NVIDIA(0):     ViewSonic VA2448 SERIES (DFP-1) (connected)
[  4538.080] (--) NVIDIA(GPU-0): CRT-0: 400.0 MHz maximum pixel clock
[  4538.080] (--) NVIDIA(GPU-0): CRT-1: 400.0 MHz maximum pixel clock
[  4538.080] (--) NVIDIA(0): ViewSonic VA2448 SERIES (DFP-0): Internal TMDS
[  4538.080] (--) NVIDIA(GPU-0): ViewSonic VA2448 SERIES (DFP-0): 330.0 MHz maximum pixel clock
[  4538.080] (--) NVIDIA(0): ViewSonic VA2448 SERIES (DFP-1): Internal TMDS
[  4538.080] (--) NVIDIA(GPU-0): ViewSonic VA2448 SERIES (DFP-1): 330.0 MHz maximum pixel clock
[  4538.080] (**) NVIDIA(0): Using HorizSync/VertRefresh ranges from the EDID for display
[  4538.080] (**) NVIDIA(0):     device ViewSonic VA2448 SERIES (DFP-0) (Using EDID
[  4538.080] (**) NVIDIA(0):     frequencies has been enabled on all display devices.)
[  4538.082] (**) NVIDIA(0): Using HorizSync/VertRefresh ranges from the EDID for display
[  4538.082] (**) NVIDIA(0):     device ViewSonic VA2448 SERIES (DFP-1) (Using EDID
[  4538.082] (**) NVIDIA(0):     frequencies has been enabled on all display devices.)
[  4538.085] (II) NVIDIA(0): Validated MetaModes:
[  4538.085] (II) NVIDIA(0):    
[  4538.085] (II) NVIDIA(0):     "DVI-I-2:nvidia-auto-select+0+0,DVI-I-3:nvidia-auto-select+1920+0"
[  4538.085] (II) NVIDIA(0): Virtual screen size determined to be 3840 x 1080
[  4538.123] (--) NVIDIA(0): DPI set to (93, 94); computed from "UseEdidDpi" X config
[  4538.124] (--) NVIDIA(0):     option
[  4538.124] (**) NVIDIA(1): Depth 24, (--) framebuffer bpp 32
[  4538.124] (==) NVIDIA(1): RGB weight 888
[  4538.124] (==) NVIDIA(1): Default visual is TrueColor
[  4538.124] (==) NVIDIA(1): Using gamma correction (1.0, 1.0, 1.0)
[  4538.124] (**) NVIDIA(1): Option "Stereo" "0"
[  4538.124] (**) NVIDIA(1): Option "SLI" "Off"
[  4538.124] (**) NVIDIA(1): Option "MultiGPU" "Off"
[  4538.124] (**) NVIDIA(1): Option "BaseMosaic" "off"
[  4538.124] (**) NVIDIA(1): Stereo disabled by request
[  4538.124] (**) NVIDIA(1): NVIDIA SLI disabled.
[  4538.124] (**) NVIDIA(1): NVIDIA Multi-GPU disabled.
[  4538.124] (**) NVIDIA(1): Option "MetaModes" "nvidia-auto-select +0+0"
[  4538.124] (**) NVIDIA(1): Enabling 2D acceleration
[  4538.625] (II) NVIDIA(0): Display (ViewSonic VA2448 SERIES (DFP-1)) does not support
[  4538.625] (II) NVIDIA(0):     NVIDIA 3D Vision stereo.
[  4538.625] (II) NVIDIA(GPU-1): Found DRM driver nvidia-drm (20130102)
[  4538.631] (II) NVIDIA(1): NVIDIA GPU GeForce 8800 GT (G92) at PCI:1:0:0 (GPU-1)
[  4538.631] (--) NVIDIA(1): Memory: 524288 kBytes
[  4538.631] (--) NVIDIA(1): VideoBIOS: 62.92.20.00.16
[  4538.631] (II) NVIDIA(1): Detected PCI Express Link width: 16X
[  4538.637] (--) NVIDIA(1): Valid display device(s) on GeForce 8800 GT at PCI:1:0:0
[  4538.638] (--) NVIDIA(1):     CRT-0
[  4538.638] (--) NVIDIA(1):     CRT-1
[  4538.638] (--) NVIDIA(1):     DFP-0
[  4538.638] (--) NVIDIA(1):     ViewSonic VA2448 SERIES (DFP-1) (boot, connected)
[  4538.638] (--) NVIDIA(GPU-1): CRT-0: 400.0 MHz maximum pixel clock
[  4538.638] (--) NVIDIA(GPU-1): CRT-1: 400.0 MHz maximum pixel clock
[  4538.638] (--) NVIDIA(1): DFP-0: Internal TMDS
[  4538.638] (--) NVIDIA(GPU-1): DFP-0: 330.0 MHz maximum pixel clock
[  4538.638] (--) NVIDIA(1): ViewSonic VA2448 SERIES (DFP-1): Internal TMDS
[  4538.638] (--) NVIDIA(GPU-1): ViewSonic VA2448 SERIES (DFP-1): 330.0 MHz maximum pixel clock
[  4538.638] (**) NVIDIA(1): Using HorizSync/VertRefresh ranges from the EDID for display
[  4538.638] (**) NVIDIA(1):     device ViewSonic VA2448 SERIES (DFP-1) (Using EDID
[  4538.638] (**) NVIDIA(1):     frequencies has been enabled on all display devices.)
[  4538.640] (II) NVIDIA(1): Validated MetaModes:
[  4538.640] (II) NVIDIA(1):     "nvidia-auto-select+0+0"
[  4538.640] (II) NVIDIA(1): Virtual screen size determined to be 1920 x 1080
[  4538.648] (--) NVIDIA(1): DPI set to (93, 94); computed from "UseEdidDpi" X config
[  4538.648] (--) NVIDIA(1):     option
[  4538.648] (--) Depth 24 pixmap format is 32 bpp
[  4538.649] (II) NVIDIA: Using 768.00 MB of virtual memory for indirect memory access.
[  4538.659] (II) NVIDIA(0): Setting mode "DVI-I-2:nvidia-auto-select+0+0,DVI-I-3:nvidia-auto-select+1920+0"
[  4538.774] Loading extension NV-GLX
[  4538.819] (==) NVIDIA(0): Disabling shared memory pixmaps
[  4538.819] (==) NVIDIA(0): Backing store enabled
[  4538.819] (==) NVIDIA(0): Silken mouse enabled
[  4538.819] (**) NVIDIA(0): DPMS enabled
[  4538.819] Loading extension NV-CONTROL
[  4538.819] (II) Loading sub module "dri2"
[  4538.819] (II) LoadModule: "dri2"
[  4538.819] (II) Module "dri2" already built-in
[  4538.819] (II) NVIDIA(0): [DRI2] Setup complete
[  4538.819] (II) NVIDIA(0): [DRI2]   VDPAU driver: nvidia
[  4538.819] (--) RandR disabled
[  4538.831] (II) NVIDIA(1): Setting mode "nvidia-auto-select+0+0"
[  4538.889] (==) NVIDIA(1): Disabling shared memory pixmaps
[  4538.889] (==) NVIDIA(1): Backing store enabled
[  4538.889] (==) NVIDIA(1): Silken mouse enabled
[  4538.889] (**) NVIDIA(1): DPMS enabled
[  4538.890] (II) Loading sub module "dri2"
[  4538.890] (II) LoadModule: "dri2"
[  4538.890] (II) Module "dri2" already built-in
[  4538.890] (II) NVIDIA(1): [DRI2] Setup complete
[  4538.890] (II) NVIDIA(1): [DRI2]   VDPAU driver: nvidia
[  4538.890] (--) RandR disabled
[  4538.894] (II) SELinux: Disabled on system
[  4538.895] (II) Initializing extension GLX
[  4538.913] (II) XKB: reuse xkmfile /var/lib/xkb/server-B20D7FC79C7F597315E3E501AEF10E0D866E8E92.xkm
[  4538.916] (II) config/udev: Adding input device Power Button (/dev/input/event1)
[  4538.916] (**) Power Button: Applying InputClass "evdev keyboard catchall"
[  4538.916] (II) LoadModule: "evdev"
[  4538.916] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so
[  4538.916] (II) Module evdev: vendor="X.Org Foundation"
[  4538.916] 	compiled for 1.15.0, module version = 2.8.2
[  4538.916] 	Module class: X.Org XInput Driver
[  4538.916] 	ABI class: X.Org XInput driver, version 20.0
[  4538.916] (II) Using input driver 'evdev' for 'Power Button'
[  4538.916] (**) Power Button: always reports core events
[  4538.916] (**) evdev: Power Button: Device: "/dev/input/event1"
[  4538.916] (--) evdev: Power Button: Vendor 0 Product 0x1
[  4538.916] (--) evdev: Power Button: Found keys
[  4538.916] (II) evdev: Power Button: Configuring as keyboard
[  4538.916] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/LNXPWRBN:00/input/input1/event1"
[  4538.916] (II) XINPUT: Adding extended input device "Power Button" (type: KEYBOARD, id 6)
[  4538.916] (**) Option "xkb_rules" "evdev"
[  4538.916] (**) Option "xkb_model" "pc105"
[  4538.916] (**) Option "xkb_layout" "us"
[  4538.917] (II) config/udev: Adding input device Power Button (/dev/input/event0)
[  4538.917] (**) Power Button: Applying InputClass "evdev keyboard catchall"
[  4538.917] (II) Using input driver 'evdev' for 'Power Button'
[  4538.917] (**) Power Button: always reports core events
[  4538.917] (**) evdev: Power Button: Device: "/dev/input/event0"
[  4538.917] (--) evdev: Power Button: Vendor 0 Product 0x1
[  4538.917] (--) evdev: Power Button: Found keys
[  4538.917] (II) evdev: Power Button: Configuring as keyboard
[  4538.917] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/device:00/PNP0C0C:00/input/input0/event0"
[  4538.917] (II) XINPUT: Adding extended input device "Power Button" (type: KEYBOARD, id 7)
[  4538.917] (**) Option "xkb_rules" "evdev"
[  4538.917] (**) Option "xkb_model" "pc105"
[  4538.917] (**) Option "xkb_layout" "us"
[  4538.917] (II) config/udev: Adding drm device (/dev/dri/card0) card0 /sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/drm/card0
[  4538.917] (II) config/udev: Ignoring already known drm device (/dev/dri/card0)
[  4538.917] (II) config/udev: Adding drm device (/dev/dri/card1) card1 /sys/devices/pci0000:00/0000:00:05.0/0000:02:00.0/drm/card1
[  4538.917] (II) config/udev: Ignoring already known drm device (/dev/dri/card1)
[  4538.917] (II) config/udev: Adding input device HDA Intel Line (/dev/input/event8)
[  4538.917] (II) No input driver specified, ignoring this device.
[  4538.917] (II) This device may have been added with another device file.
[  4538.917] (II) config/udev: Adding input device HDA Intel Front Headphone (/dev/input/event7)
[  4538.917] (II) No input driver specified, ignoring this device.
[  4538.918] (II) This device may have been added with another device file.
[  4538.918] (II) config/udev: Adding input device Microsoft Microsoft 5-Button Mouse with IntelliEye(TM) (/dev/input/event2)
[  4538.918] (**) Microsoft Microsoft 5-Button Mouse with IntelliEye(TM): Applying InputClass "evdev pointer catchall"
[  4538.918] (II) Using input driver 'evdev' for 'Microsoft Microsoft 5-Button Mouse with IntelliEye(TM)'
[  4538.918] (**) Microsoft Microsoft 5-Button Mouse with IntelliEye(TM): always reports core events
[  4538.918] (**) evdev: Microsoft Microsoft 5-Button Mouse with IntelliEye(TM): Device: "/dev/input/event2"
[  4538.918] (--) evdev: Microsoft Microsoft 5-Button Mouse with IntelliEye(TM): Vendor 0x45e Product 0x47
[  4538.918] (--) evdev: Microsoft Microsoft 5-Button Mouse with IntelliEye(TM): Found 9 mouse buttons
[  4538.918] (--) evdev: Microsoft Microsoft 5-Button Mouse with IntelliEye(TM): Found scroll wheel(s)
[  4538.918] (--) evdev: Microsoft Microsoft 5-Button Mouse with IntelliEye(TM): Found relative axes
[  4538.918] (--) evdev: Microsoft Microsoft 5-Button Mouse with IntelliEye(TM): Found x and y relative axes
[  4538.918] (II) evdev: Microsoft Microsoft 5-Button Mouse with IntelliEye(TM): Configuring as mouse
[  4538.918] (II) evdev: Microsoft Microsoft 5-Button Mouse with IntelliEye(TM): Adding scrollwheel support
[  4538.918] (**) evdev: Microsoft Microsoft 5-Button Mouse with IntelliEye(TM): YAxisMapping: buttons 4 and 5
[  4538.918] (**) evdev: Microsoft Microsoft 5-Button Mouse with IntelliEye(TM): EmulateWheelButton: 4, EmulateWheelInertia: 10, EmulateWheelTimeout: 200
[  4538.918] (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-2/2-2:1.0/input/input2/event2"
[  4538.918] (II) XINPUT: Adding extended input device "Microsoft Microsoft 5-Button Mouse with IntelliEye(TM)" (type: MOUSE, id 8)
[  4538.918] (II) evdev: Microsoft Microsoft 5-Button Mouse with IntelliEye(TM): initialized for relative axes.
[  4538.918] (**) Microsoft Microsoft 5-Button Mouse with IntelliEye(TM): (accel) keeping acceleration scheme 1
[  4538.918] (**) Microsoft Microsoft 5-Button Mouse with IntelliEye(TM): (accel) acceleration profile 0
[  4538.918] (**) Microsoft Microsoft 5-Button Mouse with IntelliEye(TM): (accel) acceleration factor: 2.000
[  4538.918] (**) Microsoft Microsoft 5-Button Mouse with IntelliEye(TM): (accel) acceleration threshold: 4
[  4538.918] (II) config/udev: Adding input device Microsoft Microsoft 5-Button Mouse with IntelliEye(TM) (/dev/input/mouse0)
[  4538.918] (II) No input driver specified, ignoring this device.
[  4538.918] (II) This device may have been added with another device file.
[  4538.919] (II) config/udev: Adding input device Microsoft Comfort Curve Keyboard 2000 (/dev/input/event3)
[  4538.919] (**) Microsoft Comfort Curve Keyboard 2000: Applying InputClass "evdev keyboard catchall"
[  4538.919] (II) Using input driver 'evdev' for 'Microsoft Comfort Curve Keyboard 2000'
[  4538.919] (**) Microsoft Comfort Curve Keyboard 2000: always reports core events
[  4538.919] (**) evdev: Microsoft Comfort Curve Keyboard 2000: Device: "/dev/input/event3"
[  4538.919] (--) evdev: Microsoft Comfort Curve Keyboard 2000: Vendor 0x45e Product 0xdd
[  4538.919] (--) evdev: Microsoft Comfort Curve Keyboard 2000: Found keys
[  4538.919] (II) evdev: Microsoft Comfort Curve Keyboard 2000: Configuring as keyboard
[  4538.919] (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:1d.1/usb3/3-2/3-2:1.0/input/input3/event3"
[  4538.919] (II) XINPUT: Adding extended input device "Microsoft Comfort Curve Keyboard 2000" (type: KEYBOARD, id 9)
[  4538.919] (**) Option "xkb_rules" "evdev"
[  4538.919] (**) Option "xkb_model" "pc105"
[  4538.919] (**) Option "xkb_layout" "us"
[  4538.919] (II) config/udev: Adding input device Microsoft Comfort Curve Keyboard 2000 (/dev/input/event4)
[  4538.919] (**) Microsoft Comfort Curve Keyboard 2000: Applying InputClass "evdev keyboard catchall"
[  4538.919] (II) Using input driver 'evdev' for 'Microsoft Comfort Curve Keyboard 2000'
[  4538.919] (**) Microsoft Comfort Curve Keyboard 2000: always reports core events
[  4538.919] (**) evdev: Microsoft Comfort Curve Keyboard 2000: Device: "/dev/input/event4"
[  4538.919] (--) evdev: Microsoft Comfort Curve Keyboard 2000: Vendor 0x45e Product 0xdd
[  4538.919] (--) evdev: Microsoft Comfort Curve Keyboard 2000: Found 1 mouse buttons
[  4538.919] (--) evdev: Microsoft Comfort Curve Keyboard 2000: Found scroll wheel(s)
[  4538.919] (--) evdev: Microsoft Comfort Curve Keyboard 2000: Found relative axes
[  4538.919] (II) evdev: Microsoft Comfort Curve Keyboard 2000: Forcing relative x/y axes to exist.
[  4538.919] (--) evdev: Microsoft Comfort Curve Keyboard 2000: Found absolute axes
[  4538.919] (II) evdev: Microsoft Comfort Curve Keyboard 2000: Forcing absolute x/y axes to exist.
[  4538.919] (--) evdev: Microsoft Comfort Curve Keyboard 2000: Found keys
[  4538.919] (II) evdev: Microsoft Comfort Curve Keyboard 2000: Configuring as mouse
[  4538.919] (II) evdev: Microsoft Comfort Curve Keyboard 2000: Configuring as keyboard
[  4538.919] (II) evdev: Microsoft Comfort Curve Keyboard 2000: Adding scrollwheel support
[  4538.919] (**) evdev: Microsoft Comfort Curve Keyboard 2000: YAxisMapping: buttons 4 and 5
[  4538.919] (**) evdev: Microsoft Comfort Curve Keyboard 2000: EmulateWheelButton: 4, EmulateWheelInertia: 10, EmulateWheelTimeout: 200
[  4538.919] (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:1d.1/usb3/3-2/3-2:1.1/input/input4/event4"
[  4538.919] (II) XINPUT: Adding extended input device "Microsoft Comfort Curve Keyboard 2000" (type: KEYBOARD, id 10)
[  4538.919] (**) Option "xkb_rules" "evdev"
[  4538.920] (**) Option "xkb_model" "pc105"
[  4538.920] (**) Option "xkb_layout" "us"
[  4538.920] (II) evdev: Microsoft Comfort Curve Keyboard 2000: initialized for relative axes.
[  4538.920] (WW) evdev: Microsoft Comfort Curve Keyboard 2000: ignoring absolute axes.
[  4538.920] (**) Microsoft Comfort Curve Keyboard 2000: (accel) keeping acceleration scheme 1
[  4538.920] (**) Microsoft Comfort Curve Keyboard 2000: (accel) acceleration profile 0
[  4538.920] (**) Microsoft Comfort Curve Keyboard 2000: (accel) acceleration factor: 2.000
[  4538.920] (**) Microsoft Comfort Curve Keyboard 2000: (accel) acceleration threshold: 4
[  4538.920] (II) config/udev: Adding input device applesmc (/dev/input/event9)
[  4538.920] (II) No input driver specified, ignoring this device.
[  4538.920] (II) This device may have been added with another device file.
[  4538.920] (II) config/udev: Adding input device applesmc (/dev/input/js0)
[  4538.920] (II) No input driver specified, ignoring this device.
[  4538.920] (II) This device may have been added with another device file.
[  4544.730] (II) NVIDIA(GPU-0): Display (ViewSonic VA2448 SERIES (DFP-0)) does not support
[  4544.730] (II) NVIDIA(GPU-0):     NVIDIA 3D Vision stereo.
[  4544.752] (II) NVIDIA(GPU-0): Display (ViewSonic VA2448 SERIES (DFP-1)) does not support
[  4544.752] (II) NVIDIA(GPU-0):     NVIDIA 3D Vision stereo.
[  4545.080] (II) NVIDIA(GPU-0): Display (ViewSonic VA2448 SERIES (DFP-0)) does not support
[  4545.080] (II) NVIDIA(GPU-0):     NVIDIA 3D Vision stereo.
[  4545.101] (II) NVIDIA(GPU-0): Display (ViewSonic VA2448 SERIES (DFP-1)) does not support
[  4545.101] (II) NVIDIA(GPU-0):     NVIDIA 3D Vision stereo.
[  4545.269] (II) NVIDIA(GPU-0): Display (ViewSonic VA2448 SERIES (DFP-0)) does not support
[  4545.269] (II) NVIDIA(GPU-0):     NVIDIA 3D Vision stereo.
[  4545.290] (II) NVIDIA(GPU-0): Display (ViewSonic VA2448 SERIES (DFP-1)) does not support
[  4545.290] (II) NVIDIA(GPU-0):     NVIDIA 3D Vision stereo.
[  4545.386] (II) XKB: reuse xkmfile /var/lib/xkb/server-8AA988DD479FAABEC4FC3CCCF4CC29B4948840B4.xkm
[  4545.405] (II) XKB: reuse xkmfile /var/lib/xkb/server-1908D3BB0224FA577B58A32F49D8B4107F7BAFFD.xkm
[  4547.143] (II) NVIDIA(GPU-0): Display (ViewSonic VA2448 SERIES (DFP-0)) does not support
[  4547.143] (II) NVIDIA(GPU-0):     NVIDIA 3D Vision stereo.
[  4547.164] (II) NVIDIA(GPU-0): Display (ViewSonic VA2448 SERIES (DFP-1)) does not support
[  4547.164] (II) NVIDIA(GPU-0):     NVIDIA 3D Vision stereo.
[  4547.254] (II) XKB: reuse xkmfile /var/lib/xkb/server-1908D3BB0224FA577B58A32F49D8B4107F7BAFFD.xkm
[  4548.563] (II) XKB: reuse xkmfile /var/lib/xkb/server-1908D3BB0224FA577B58A32F49D8B4107F7BAFFD.xkm
[  4565.349] (II) NVIDIA(GPU-0): Display (ViewSonic VA2448 SERIES (DFP-0)) does not support
[  4565.349] (II) NVIDIA(GPU-0):     NVIDIA 3D Vision stereo.
[  4565.370] (II) NVIDIA(GPU-0): Display (ViewSonic VA2448 SERIES (DFP-1)) does not support
[  4565.370] (II) NVIDIA(GPU-0):     NVIDIA 3D Vision stereo.
[  4651.106] (II) NVIDIA(GPU-0): Display (ViewSonic VA2448 SERIES (DFP-0)) does not support
[  4651.106] (II) NVIDIA(GPU-0):     NVIDIA 3D Vision stereo.
[  4651.127] (II) NVIDIA(GPU-0): Display (ViewSonic VA2448 SERIES (DFP-1)) does not support
[  4651.127] (II) NVIDIA(GPU-0):     NVIDIA 3D Vision stereo.
[  4703.043] (II) NVIDIA(GPU-1): Display (ViewSonic VA2448 SERIES (DFP-1)) does not support
[  4703.043] (II) NVIDIA(GPU-1):     NVIDIA 3D Vision stereo.
[  4721.122] (II) NVIDIA(GPU-0): Display (ViewSonic VA2448 SERIES (DFP-0)) does not support
[  4721.122] (II) NVIDIA(GPU-0):     NVIDIA 3D Vision stereo.
[  4721.143] (II) NVIDIA(GPU-0): Display (ViewSonic VA2448 SERIES (DFP-1)) does not support
[  4721.143] (II) NVIDIA(GPU-0):     NVIDIA 3D Vision stereo.
[  4772.228] (II) NVIDIA(GPU-1): Display (ViewSonic VA2448 SERIES (DFP-1)) does not support
[  4772.228] (II) NVIDIA(GPU-1):     NVIDIA 3D Vision stereo.

[HomerJaySimpson]

I should have included this also. This is from a file called syslog. This is the end of the file.

Code: Select all

May 11 13:59:57 mint-MacPro ag[4968]: mdm-superinit Starting...
May 11 13:59:57 mint-MacPro ag[4969]: mdm-superinit Running prime-switch...
May 11 13:59:57 mint-MacPro ag[4982]: mdm-superinit Finished running prime-switch.
May 11 13:59:57 mint-MacPro ag[4983]: mdm-superinit Running prime-offload...
May 11 13:59:57 mint-MacPro ag[4988]: mdm-superinit Finished running prime-offload.
May 11 13:59:57 mint-MacPro ag[4989]: mdm-superinit Finished
May 11 14:00:02 mint-MacPro mdm[4954]: GLib-CRITICAL: g_key_file_get_string: assertion 'key_file != NULL' failed
May 11 14:00:02 mint-MacPro mdm[4954]: GLib-CRITICAL: g_key_file_free: assertion 'key_file != NULL' failed
May 11 14:00:03 mint-MacPro rtkit-daemon[1900]: Successfully made thread 5310 of process 5310 (n/a) owned by '1000' high priority at nice level -11.
May 11 14:00:03 mint-MacPro rtkit-daemon[1900]: Supervising 1 threads of 1 processes of 1 users.
May 11 14:00:03 mint-MacPro rtkit-daemon[1900]: Successfully made thread 5318 of process 5310 (n/a) owned by '1000' RT at priority 5.
May 11 14:00:03 mint-MacPro rtkit-daemon[1900]: Supervising 2 threads of 1 processes of 1 users.
May 11 14:00:03 mint-MacPro rtkit-daemon[1900]: Successfully made thread 5325 of process 5310 (n/a) owned by '1000' RT at priority 5.
May 11 14:00:03 mint-MacPro rtkit-daemon[1900]: Supervising 3 threads of 1 processes of 1 users.
May 11 14:00:03 mint-MacPro dbus[793]: [system] Activating service name='org.freedesktop.systemd1' (using servicehelper)
May 11 14:00:03 mint-MacPro bluetoothd[852]: Endpoint registered: sender=:1.89 path=/MediaEndpoint/HFPAG
May 11 14:00:03 mint-MacPro bluetoothd[852]: Endpoint registered: sender=:1.89 path=/MediaEndpoint/HFPHS
May 11 14:00:03 mint-MacPro bluetoothd[852]: Endpoint registered: sender=:1.89 path=/MediaEndpoint/A2DPSource
May 11 14:00:03 mint-MacPro bluetoothd[852]: Endpoint registered: sender=:1.89 path=/MediaEndpoint/A2DPSink
May 11 14:00:03 mint-MacPro dbus[793]: [system] Successfully activated service 'org.freedesktop.systemd1'
May 11 14:00:03 mint-MacPro pulseaudio[5310]: [pulseaudio] module-bluetooth-device.c: Default profile not connected, selecting off profile
May 11 14:00:03 mint-MacPro colord: Device added: xrandr-ViewSonic Corporation-VA2448 SERIE-SEM114102413
May 11 14:00:03 mint-MacPro colord: Device added: xrandr-ViewSonic Corporation-VA2448 SERIE-SEM114102627
May 11 14:00:03 mint-MacPro colord: Profile added: icc-f6c814ed57bdc88b74dbf8a55d1d3982
May 11 14:00:03 mint-MacPro colord: Profile added: icc-96558c8023e09354c5c2956adf5cce5d
May 11 14:00:03 mint-MacPro colord: Profile added: icc-1f133fe9715087febdf61f1d867ca560
May 11 14:00:03 mint-MacPro colord: Profile added: icc-9ae6a128489f1785be9756b0f2d72fe6
May 11 14:00:03 mint-MacPro colord: Profile added: icc-c73cf14d4fa3dd5f42898e3b2bb2b28b
May 11 14:00:05 mint-MacPro cinnamon-session[5065]: WARNING: Application 'cinnamon.desktop' killed by signal 15
May 11 14:00:07 mint-MacPro cinnamon-session[5065]: WARNING: App 'cinnamon.desktop' respawning too quickly
May 11 14:00:07 mint-MacPro cinnamon-session[5065]: CRITICAL: We failed, but the fail whale is dead. Sorry....
May 11 14:00:22 mint-MacPro kernel: [ 4564.416458] perf samples too long (2503 > 2500), lowering kernel.perf_event_max_sample_rate to 50000

[roblm]

The Xorg.0.log file says there is an xorg.conf file. Open it with this command:

Code: Select all

gedit /etc/X11/xorg.conf

[HomerJaySimpson]

Thank you for your time in this.

Code: Select all

# nvidia-settings: X configuration file generated by nvidia-settings
# nvidia-settings:  version 340.32  (buildmeister@swio-display-x64-rhel04-01)  Tue Aug  5 21:15:22 PDT 2014

# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig:  version 340.32  (buildmeister@swio-display-x64-rhel04-01)  Tue Aug  5 21:15:33 PDT 2014

Section "ServerLayout"
    Identifier     "Layout0"
    Screen      0  "Screen0" 0 0
    Screen      1  "Screen1" RightOf "Screen0"
    InputDevice    "Keyboard0" "CoreKeyboard"
    InputDevice    "Mouse0" "CorePointer"
    Option         "Xinerama" "0"
EndSection

Section "Files"
EndSection

Section "InputDevice"

    # generated from default
    Identifier     "Mouse0"
    Driver         "mouse"
    Option         "Protocol" "auto"
    Option         "Device" "/dev/psaux"
    Option         "Emulate3Buttons" "no"
    Option         "ZAxisMapping" "4 5"
EndSection

Section "InputDevice"

    # generated from default
    Identifier     "Keyboard0"
    Driver         "kbd"
EndSection

Section "Monitor"

    # HorizSync source: edid, VertRefresh source: edid
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "ViewSonic VA2448 SERIES"
    HorizSync       24.0 - 82.0
    VertRefresh     50.0 - 75.0
    Option         "DPMS"
EndSection

Section "Monitor"

    # HorizSync source: unknown, VertRefresh source: unknown
    Identifier     "Monitor1"
    VendorName     "Unknown"
    ModelName      "ViewSonic VA2448 SERIES"
    HorizSync       0.0 - 0.0
    VertRefresh     0.0
    Option         "DPMS"
EndSection

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "GeForce 8800 GT"
    BusID          "PCI:2:0:0"
EndSection

Section "Device"
    Identifier     "Device1"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "GeForce 8800 GT"
    BusID          "PCI:1:0:0"
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "Stereo" "0"
    Option         "nvidiaXineramaInfoOrder" "DFP-0"
    Option         "metamodes" "DVI-I-2: nvidia-auto-select +0+0, DVI-I-3: nvidia-auto-select +1920+0"
    Option         "SLI" "Off"
    Option         "MultiGPU" "Off"
    Option         "BaseMosaic" "off"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

Section "Screen"
    Identifier     "Screen1"
    Device         "Device1"
    Monitor        "Monitor1"
    DefaultDepth    24
    Option         "Stereo" "0"
    Option         "metamodes" "nvidia-auto-select +0+0"
    Option         "SLI" "Off"
    Option         "MultiGPU" "Off"
    Option         "BaseMosaic" "off"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

[roblm]

If you previously made any changes to the monitors in System Settings → Display, then rename the monitors.xml file in /home/your-user-name/.config
(a hidden folder), to monitors.xml.old

Then make a backup of the xorg.conf file by using this command:

Code: Select all

sudo cp /etc/X11/xorg.conf /etc/X11/xorg.conf.backup

Then open the xorg.conf file for editing by using this command:

Code: Select all

gksudo gedit /etc/Xll/xorg.conf

In the ServerLayout section, change the value in this line from 0 to a 1:

Code: Select all

Option "Xinerama" "0"

Then change the values of these two lines in the second Monitor section to those of the first Monitor section. Change these values:

Code: Select all

HorizSync       0.0 - 0.0
VertRefresh     0.0

To these:

Code: Select all

HorizSync       24.0 - 82.0
VertRefresh     50.0 – 75.0

Save the file and Log out and back in. If there is a startup problem and you can't get to the desktop, then reboot and at the GRUB boot menu select Recovery Mode. If no
menu shows, then hold down the Shift key while starting, or keep tapping the key. In the menu, select “root - drop to root shell prompt”. When asked for the root password, just
type your user password. Then change the file permissions to read and write by typing:

Code: Select all

mount -o remount,rw /	

Then rename the xorg.conf file by typing:

Code: Select all

mv /etc/X11/xorg.conf /etc/X11/xorg.conf.old

Then type “reboot”.
You'll go back to the Recovery Mode menu. Don't click anything, just wait about 7 seconds for the reboot.

[HomerJaySimpson]

That fixed it. Thank you. But i would like to understand what was wrong. I'm trying to learn everything i can.

Thanks for your time. i really do appreciate it.

[roblm]

But i would like to understand what was wrong.

The Xinerama feature allows the use of multiple monitors connected to two GPUs in an extended desktop display that spans across all the screens. However, this won't be
configured automatically in Linux, as you can see from the initial xorg.conf file. Some manual configuration is needed. All that had to be done in your case was to activate
Xinerama in the Option “Xinerama” line and correct the errors in the second Monitor section. It's puzzling why zero values were used for the horizontal and vertical scan
frequency ranges. Usually the graphics driver extracts these values from the monitors EDID (Extended Display Identification Data), as it did for the first Monitor section, and if
this fails, then default values are used. Actually that second Monitor section is not needed. The rest of the xorg.conf file was configured correctly.
This web page has some information on Xinerama. CLICK HERE.
For users with AMD/ATI graphics cards and using the fglrx driver, the Catalyst Control Center has a Xinerama setting, but I haven't tried it yet to see how well it works.

If you want to connect 3 monitors in an extended desktop without having to edit any configuration file, then get a graphics card that supports 3 connected displays, as I mentioned in
my first post.

Here's the reason for renaming the monitors.xml file, which disables it. Any changes made to monitors in System Settings → Display are stored in that configuration file,
and those settings will override the settings in the xorg.conf file. If you ever use Display to make any changes, then a new monitors.xml file will be created.