[SOLVED]can't change creen resolution graphic card radeon RX 460

[davidMint]

I have linux mint 18 (Sarah) and a radeon Rx 460.
In the manager I can not change the screen resolution ; only 1024*768 is possible...
How can I fix this ?
Thanks,

[TooMuchTime]

Let's get a look at your system. At at terminal, enter the following command:

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inxi -Fxz

Post the output back here between Code tags. If you type, the F is a capital.

[davidMint]

Here it is.
It seems that the systems does not use my graphic card !?!

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System:    Host: david-MS-7996 Kernel: 4.4.0-62-generic x86_64 (64 bit gcc: 5.4.0)
           Desktop: KDE Plasma 5.8.5 (Qt 5.6.1) Distro: Linux Mint 18 Sarah
Machine:   Mobo: MSI model: H110M PRO-VD (MS-7996) v: 1.0
           Bios: American Megatrends v: 2.80 date: 07/27/2016
CPU:       Dual core Intel Pentium G4400 (-MCP-) cache: 3072 KB
           flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) bmips: 13247
           clock speeds: max: 3300 MHz 1: 938 MHz 2: 1728 MHz
Graphics:  Card: Advanced Micro Devices [AMD/ATI] Device 67ef
           bus-ID: 01:00.0
           Display Server: X.Org 1.18.3 drivers: fbdev,ati (unloaded: vesa,radeon)
           Resolution: 1024x768@76.00hz
           GLX Renderer: Gallium 0.4 on llvmpipe (LLVM 3.8, 128 bits)
           GLX Version: 3.0 Mesa 11.2.0 Direct Rendering: Yes
Audio:     Card-1 Advanced Micro Devices [AMD/ATI] Device aae0
           driver: snd_hda_intel bus-ID: 01:00.1
           Card-2 Intel Sunrise Point-H HD Audio
           driver: snd_hda_intel bus-ID: 00:1f.3
           Sound: Advanced Linux Sound Architecture v: k4.4.0-62-generic
Network:   Card: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
           driver: r8169 v: 2.3LK-NAPI port: d000 bus-ID: 02:00.0
           IF: enp2s0 state: up speed: 100 Mbps duplex: full mac: <filter>
Drives:    HDD Total Size: 1250.3GB (8.1% used)
           ID-1: /dev/sda model: Samsung_SSD_850 size: 250.1GB
           ID-2: /dev/sdb model: ST1000DM010 size: 1000.2GB
Partition: ID-1: / size: 23G used: 8.3G (39%) fs: ext4 dev: /dev/sda6
           ID-2: /home size: 33G used: 3.3G (11%) fs: ext4 dev: /dev/sda7
           ID-3: swap-1 size: 8.00GB used: 0.00GB (0%) fs: swap dev: /dev/sda5
RAID:      No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors:   System Temperatures: cpu: 29.8C mobo: 27.8C
           Fan Speeds (in rpm): cpu: N/A
Info:      Processes: 210 Uptime: 4:18 Memory: 2593.8/7946.2MB
           Init: systemd runlevel: 5 Gcc sys: 5.4.0
           Client: Shell (bash 4.3.421) inxi: 2.2.35 

[TooMuchTime]

I'm not good with KDE but here is the AMDGPU driver download page. You'll want the Ubuntu driver.
AMDGPU-PRO-Driver-for-Linux-Release-Notes

You can also see if the drivers are already installed. Open the Driver Manager from the menu and check for the AMD drivers. If they are present, you can always just click to use them.

According to this page, the 67EF device is the Radeon RX 460. Run the

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xrandr

terminal command to find the possible screen resolutions for your monitor.

[davidMint]

Here is the answer to xrandr. Bad news...

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xrandr: Failed to get size of gamma for output default
Screen 0: minimum 1024 x 768, current 1024 x 768, maximum 1024 x 768
default connected primary 1024x768+0+0 0mm x 0mm
   1024x768      76.00* 

[TooMuchTime]

Screen 0: minimum 1024 x 768, current 1024 x 768, maximum 1024 x 768

What is the make and manufacturer of your monitor?

[b2a8r1]

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System:    Host: david-MS-7996 Kernel: 4.4.0-62-generic x86_64 (64 bit gcc: 5.4.0) 
Display Server: X.Org 1.18.3 drivers: fbdev,ati (unloaded: vesa,radeon)
           Resolution: 1024x768@76.00hz
           GLX Renderer: Gallium 0.4 on llvmpipe (LLVM 3.8, 128 bits)
           GLX Version: 3.0 Mesa 11.2.0 Direct Rendering: Yes

Ok I have highlighted your problem you need a 4.8 or newer kernel and install xserver-xorg-video-amdgpu for opensource in the package manager.
or keep the kernel you have and install amdgpu-pro like suggested above.http://support.amd.com/en-us/kb-article ... Notes.aspx
Your problem is that the graphics card is running in software fallback that is what this means drivers: fbdev GLX Renderer: Gallium 0.4 on llvmpipe



this is what it should look like i'm just running development branch.
https://github.com/M-Bab/linux-kernel-amdgpu-binaries

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System:    Host: htpc Kernel: 4.9.15+ x86_64 (64 bit gcc: 6.2.0)
           Desktop: Cinnamon 3.2.7 (Gtk 3.18.9-1ubuntu3.2)
           Distro: Linux Mint 18.1 Serena
Machine:   Mobo: ASUSTeK model: M5A97 PLUS v: Rev X.0x
           Bios: American Megatrends v: 0901 date: 04/15/2016
CPU:       Hexa core AMD Phenom II X6 1045T (-MCP-) cache: 3072 KB
           flags: (lm nx sse sse2 sse3 sse4a svm) bmips: 32509
           clock speeds: max: 2700 MHz 1: 800 MHz 2: 1400 MHz 3: 2000 MHz
           4: 800 MHz 5: 800 MHz 6: 1400 MHz
Graphics:  Card: Advanced Micro Devices [AMD/ATI] Device 67df bus-ID: 01:00.0
           Display Server: X.Org 1.18.4 driver: amdgpu
           Resolution: 1920x1080@60.00hz
           GLX Renderer: Gallium 0.4 on AMD POLARIS10 (DRM 3.12.0 / 4.9.15+, LLVM 5.0.0)
           GLX Version: 3.0 Mesa 17.1.0-devel - padoka PPA Direct Rendering: Yes
Audio:     Card-1 Advanced Micro Devices [AMD/ATI] Device aaf0
           driver: snd_hda_intel bus-ID: 01:00.1
           Card-2 Advanced Micro Devices [AMD/ATI] SBx00 Azalia (Intel HDA)
           driver: snd_hda_intel bus-ID: 00:14.2
           Sound: Advanced Linux Sound Architecture v: k4.9.15+
Network:   Card: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
           driver: r8169 v: 2.3LK-NAPI port: d000 bus-ID: 02:00.0
           IF: enp2s0 state: up speed: 1000 Mbps duplex: full mac: <filter>
Drives:    HDD Total Size: 1240.3GB (29.2% used)
           ID-1: /dev/sda model: PNY_CS1311_240GB size: 240.1GB
           ID-2: /dev/sdb model: ST1000DM003 size: 1000.2GB
Partition: ID-1: / size: 204G used: 37G (19%) fs: ext4 dev: /dev/dm-0
           ID-2: /boot size: 472M used: 112M (25%) fs: ext2 dev: /dev/sda1
           ID-3: swap-1 size: 17.09GB used: 0.00GB (0%) fs: swap dev: /dev/dm-1
RAID:      No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors:   System Temperatures: cpu: 43.0C mobo: 37.0C gpu: 54.0
           Fan Speeds (in rpm): cpu: 0 fan-1: 1467 fan-2: 0 fan-3: 976
Info:      Processes: 239 Uptime: 8:09 Memory: 1915.6/15967.8MB
           Init: systemd runlevel: 5 Gcc sys: 5.4.0
           Client: Shell (bash 4.3.461) inxi: 2.2.35

[davidMint]

Thanks, I will check with a new kernel.
But can I say is that I have crashed my computer after the installation of the amdgpu-pro ! The screen is black and I have no prompt at all.
I can't do anything and I have to re-install all...

[davidMint]

I install new kernel (4. through the update manager and it works fine.
Thanks b2a8r1 !