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frozenjava

Member

Registered: 2016-06-12

Posts: 3

Multiple monitors across 2 GPUs

I'm having an issue getting all 5 of my monitors working. 4 of them are plugged into my first AMD R9 380X and the 5th monitor is plugged into my second, identical graphics card. I was using the proprietary catalyst driver until today when I switched to the opensource amdgpu driver hoping that it would see my 5th monitor but no luck.

I found a post that shows the exact problem I was having with the catalyst driver on the ubuntu forums but no one responded to it. https://ubuntuforums.org/showthread.php?t=2310710

lspci | grep VGA
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Tonga XT / Amethyst XT [Radeon R9 380X / R9 M295X Mac Edition] (rev f1)
02:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Tonga XT / Amethyst XT [Radeon R9 380X / R9 M295X Mac Edition] (rev f1)

xrandr 
Screen 0: minimum 320 x 200, current 5760 x 2160, maximum 16384 x 16384
DisplayPort-0 connected 1920x1080+0+1080 (normal left inverted right x axis y axis) 598mm x 336mm
   1920x1080     60.00*+  50.00    59.94  
   1920x1080i    60.00    50.00    59.94  
   1680x1050     59.95  
   1280x1024     75.02    60.02  
   1440x900      59.89  
   1280x960      60.00  
   1152x864      75.00  
   1280x720      60.00    50.00    59.94  
   1024x768      75.03    70.07    60.00  
   800x600       72.19    75.00    60.32    56.25  
   720x576       50.00  
   720x480       60.00    59.94  
   640x480       75.00    72.81    60.00    59.94  
   720x400       70.08  
HDMI-A-0 connected 1920x1080+3840+1080 (normal left inverted right x axis y axis) 598mm x 336mm
   1920x1080     60.00 +  50.00    59.94* 
   1920x1080i    60.00    50.00    59.94  
   1680x1050     59.88  
   1280x1024     75.02    60.02  
   1440x900      59.90  
   1280x960      60.00  
   1152x864      75.00  
   1280x720      60.00    50.00    59.94  
   1024x768      75.03    70.07    60.00  
   800x600       72.19    75.00    60.32    56.25  
   720x576       50.00  
   720x480       60.00    59.94  
   640x480       75.00    72.81    60.00    59.94  
   720x400       70.08  
DVI-D-0 connected 1920x1080+2812+0 (normal left inverted right x axis y axis) 509mm x 286mm
   1920x1080     60.00*+
   1680x1050     59.88  
   1280x1024     60.02  
   1440x900      59.90  
   1280x720      60.00  
   1024x768      60.00  
   800x600       60.32  
   640x480       59.94  
   720x400       70.08  
DVI-I-1 connected primary 1920x1080+1920+1080 (normal left inverted right x axis y axis) 598mm x 336mm
   1920x1080     60.00*+  50.00    59.94  
   1920x1080i    60.00    50.00    59.94  
   1680x1050     59.88  
   1280x1024     75.02    60.02  
   1440x900      59.90  
   1280x960      60.00  
   1152x864      75.00  
   1280x720      60.00    50.00    59.94  
   1024x768      75.03    70.07    60.00  
   800x600       72.19    75.00    60.32    56.25  
   720x576       50.00  
   720x480       60.00    59.94  
   640x480       75.00    72.81    60.00    59.94  
   720x400       70.08

Any help would be greatly appreciated. Again I am using the opensource AMDGPU driver now but I don't mind switching back to the proprietary catalyst driver if need be.

jasonwryan

Anarchist

From: .nz

Registered: 2009-05-09

Posts: 30,424

Website

Re: Multiple monitors across 2 GPUs

Not a Sysadmin issue, moving to Multimedia...

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