Nothing on the external monitor

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kajp

Nothing on the external monitor

Post by kajp »

Someone who can help me get my external monitor work? I have recently reinstalled LMDE 2, and this time I really want to give the driver nouveau a chance. Last time I finally gave up and installed the nVidia driver, and it has worked fine all the time. But after all it is proprietary, so...

I have an H-P laptop Pavilion DV4, and an external monitor Samsung SynchMaster 2253LW, connected to the HDMI port of the computer. The graphics is nVidia GeForce 9200M GS.

Strange is, that when I run the live DVD it works perfect, and I can run any of the screens, the laptop internal or the external, or both of them, and with individual resolution. The settings via the program "Monitors" is working perfect. But after installation of Mint LMDE 2 64 bit only the internal screen is showing anything.

After looking around on different forums on the internet, and when checking my system, I notice that the file /etc/X11/xorg.conf is lacking. However I have also seen on the forums, that it is normally not needed. However after a hint from someone I let create a new one:

Code: Select all

sudo X -configure 
(after first stopping X). This new file, xorg.conf.new became like this:

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Section "ServerLayout"
	Identifier     "X.org Configured"
	Screen      0  "Screen0" 0 0
	InputDevice    "Mouse0" "CorePointer"
	InputDevice    "Keyboard0" "CoreKeyboard"
EndSection

Section "Files"
	ModulePath   "/usr/lib/xorg/modules"
	FontPath     "/usr/share/fonts/X11/misc"
	FontPath     "/usr/share/fonts/X11/cyrillic"
	FontPath     "/usr/share/fonts/X11/100dpi/:unscaled"
	FontPath     "/usr/share/fonts/X11/75dpi/:unscaled"
	FontPath     "/usr/share/fonts/X11/Type1"
	FontPath     "/usr/share/fonts/X11/100dpi"
	FontPath     "/usr/share/fonts/X11/75dpi"
	FontPath     "built-ins"
EndSection

Section "Module"
	Load  "glx"
EndSection
- - - < mouse and keyboard sections> - - - - - - - - - -

Section "Monitor"
	Identifier   "Monitor0"
	VendorName   "Monitor Vendor"
	ModelName    "Monitor Model"
EndSection

Section "Device"
        ### Available Driver options are:-
        ### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
        ### <string>: "String", <freq>: "<f> Hz/kHz/MHz",
        ### <percent>: "<f>%"
        ### [arg]: arg optional
        #Option     "SWcursor"           	# [<bool>]
        #Option     "HWcursor"           	# [<bool>]
        #Option     "NoAccel"            	# [<bool>]
        #Option     "ShadowFB"           	# [<bool>]
        #Option     "VideoKey"           	# <i>
        #Option     "WrappedFB"          	# [<bool>]
        #Option     "GLXVBlank"          	# [<bool>]
        #Option     "ZaphodHeads"        	# <str>
        #Option     "PageFlip"           	# [<bool>]
        #Option     "SwapLimit"          	# <i>
        #Option     "AsyncUTSDFS"        	# [<bool>]
        #Option     "AccelMethod"        	# <str>
	Identifier  "Card0"
	Driver      "nouveau"
	BusID       "PCI:1:0:0"
EndSection

Section "Screen"
	Identifier "Screen0"
	Device     "Card0"
	Monitor    "Monitor0"
	SubSection "Display"
		Viewport   0 0
		Depth     1
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     4
	EndSubSection
	 - - - < more subsections for depths 8, 15, 16 and 24> - - - - - - - - - -
EndSection
In order to shorten the text a bit, I removed the mouse and keyboard sections, as I think they can not have any impact on my monitor problem.

Running xrandr without parameters is giving this:

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Screen 0: minimum 320 x 200, current 2960 x 1050, maximum 8192 x 8192
LVDS-1 connected 1280x800+0+250 (normal left inverted right x axis y axis) 304mm x 190mm
   1280x800      60.00*+
   1024x768      59.92  
   - - - < more resolutions> - - - - - - - - - -
VGA-1 disconnected (normal left inverted right x axis y axis)
HDMI-1 connected 1680x1050+1280+0 (normal left inverted right x axis y axis) 474mm x 296mm
   1680x1050     59.88*+
   1280x1024     75.02    60.02  
   - - - < more resolutions> - - - - - - - - - -
so the system obviously recognises the monitor on the HDMI port. Also the data it reports is correct.


Finally, after restarting X11 (via ctrl+alt+<baackspace>) I get this output from dmesg:

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[drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainder is 122
Raw EDID:
 	00 ff ff ff ff ff ff 00 4c 2d 7c 03 32 32 51 40
 	00 00 00 ff ff ff ff ff ff ff ff ff ff ff ff ff
 	ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 	ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 	ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 	ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 	ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
nouveau E[     DRM] DDC responded, but no EDID for HDMI-A-1
So possibly I should add some ID in the xorg.conf or maybe as a parameter to xrandr. However I am not skilled enough for this. My efforts have not so far ended in success.
Sorry for being so spacious because of all the printouts. However I wanted to be as complete as possible when asking.
/Kaj
Last edited by LockBot on Wed Dec 28, 2022 7:16 am, edited 1 time in total.
Reason: Topic automatically closed 6 months after creation. New replies are no longer allowed.
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