Linux Only Detects 2/3 of My Monitors

Support Graphics & Display
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I recently installed Manjaro on my computer (inspired by the LTT linux challenge) and I am having an issue that is consistant across other distros as well (previously tried Ubuntu and Fedora).

Two of my three monitors are working and being detected, but the third, which is usually my primary display will not even be detected by the system, and this was a problem on every other distro as well. I know this is a problem with linux because the motherboard splash screen shows up on this primary display after post.

I have an XFX RX590 and a Ryzen 2600. I think I have the correct drivers installed (video-linux) based on the fact that others said nobody should have to download the proprietary AMD drivers.

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Hello and welcome to Manjaro.

can you provide the output of the following two commands:

xrandr
inxi -Gxya

I’m not familiar with KDE nor amd gpu but others who are would need more imformation. :grinning:

1 Like
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Graphics:
  Device-1: AMD Ellesmere [Radeon RX 470/480/570/570X/580/580X/590]
  vendor: XFX Pine driver: amdgpu v: kernel bus-ID: 08:00.0 chip-ID: 1002:67df
  class-ID: 0300
  Display: x11 server: X. Org 1.20.13 compositor: kwin_x11 driver:
  loaded: amdgpu,ati unloaded: modesetting alternate: fbdev,vesa
  display-ID: :0 screens: 1
  Screen-1: 0 s-res: 3840x1080 s-dpi: 96 s-size: 1013x285mm (39.9x11.2")
  s-diag: 1052mm (41.4")
  Monitor-1: HDMI-A-0 res: 1920x1080 hz: 60 dpi: 96
  size: 509x286mm (20.0x11.3") diag: 584mm (23")
  Monitor-2: DVI-D-0 res: 1920x1080 hz: 60 dpi: 102
  size: 477x268mm (18.8x10.6") diag: 547mm (21.5")
  OpenGL: renderer: Radeon RX 590 Series (POLARIS10 DRM 3.42.0
  5.14.10-1-MANJARO LLVM 12.0.1)
  v: 4.6 Mesa 21.2.3 direct render: Yes
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‘xrandr’ output still missing. Please put the output between this ```` (in the line above and below)

output

So it should look like. So it is better to read.

At topic. Are all three monitors connected to the same grafic card?

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Sorry about that, forgot to include xrandr

Screen 0: minimum 320 x 200, current 3840 x 1080, maximum 16384 x 16384
DisplayPort-0 disconnected (normal left inverted right x axis y axis)
DisplayPort-1 disconnected (normal left inverted right x axis y axis)
DisplayPort-2 disconnected (normal left inverted right x axis y axis)
HDMI-A-0 connected primary 1920x1080+1920+0 (normal left inverted right x axis y axis) 509mm x 286mm
   1920x1080     60.00*+  50.00    59.94  
   1680x1050     59.88  
   1280x1024     75.02    60.02  
   1440x900      59.90  
   1280x960      60.00  
   1280x800      60.00  
   1280x720      60.00    50.00    59.94  
   1024x768      75.03    70.07    60.00  
   832x624       74.55  
   800x600       72.19    75.00    60.32    56.25  
   720x576       50.00  
   720x480       60.00    59.94  
   640x480       75.00    72.81    66.67    60.00    59.94  
   720x400       70.08  
DVI-D-0 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 477mm x 268mm
   1920x1080     60.00*+
   1680x1050     59.88  
   1280x1024     75.02    60.02  
   1440x900      59.90  
   1280x960      60.00  
   1280x800      59.91  
   1152x864      75.00  
   1280x720      60.00  
   1024x768      75.03    70.07    60.00  
   832x624       74.55  
   800x600       72.19    75.00    60.32    56.25  
   640x480       75.00    72.81    66.67    59.94  
   720x400       70.08

The display thats not showing up is plugged into one of the display port outputs that say theyre disconnected, but like i said I know theyre all connected properly because they all have something show up during the boot sequence. And yes theyre all plugged into the same graphics card. I never had any issues using Windows.

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