Management dual screens 46' and 22'

Support Graphics & Display
,
1

Hello All
I beg your help for an outstanding problem I have with my new build PC tower.
I’ve 2 screens, the first one, a 22’ LG monitor selected as primary and a second one, a Samsung TV 46’ as secondary.
I don’t understand why, the 46’ has priority on boot and logging, also when this TV is switched off but stay in standby mode. If I want to use the 22’ monitor, I’ve to unplug the HDMI connection from the 46’ TV.
On the XFCE display management, the 22’ is selected as primary and mirror display is unselected.
In this new tower, I’ve also installed the last Debian as independant installation, they have their own ssd, no dual boot (selection by boot keyboard selection)
Debian has also trouble with the screens, It start with the 46’ TV, the 22’ stay in standby only. If I want to use my 22’ monitor with Debian I must unplug the cable from the TV.
At the first look, I think about a graphic card configuration (my old configuration didn’t got these issues), but I could be wrong, it’s an Sapphire Radeon RX6600 Pulse (Navi 23) running with kernel 5.15 LTS
Below some Informations they may help you

$ inxi -G
Graphics:
  Device-1: AMD Navi 23 [Radeon RX 6600/6600 XT/6600M] driver: amdgpu
    v: kernel
  Display: x11 server: X.Org v: 21.1.3 driver: X: loaded: amdgpu
    unloaded: modesetting,radeon gpu: amdgpu resolution: 1: 3840x2160~30Hz
    2: 1680x1050~60Hz
  OpenGL:
    renderer: AMD DIMGREY_CAVEFISH (LLVM 13.0.1 DRM 3.42 5.15.41-1-MANJARO)
    v: 4.6 Mesa 22.0.4

$ mhwd -li
 Installed PCI configs:
--------------------------------------------------------------------------------
                  NAME               VERSION          FREEDRIVER           TYPE
--------------------------------------------------------------------------------
           video-linux            2018.05.04                true            PCI


Warning: No installed USB configs!

$ lspci | grep VGA
2d:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Navi 23 [Radeon RX 6600/6600 XT/6600M] (rev c7)

$ xrandr
Screen 0: minimum 320 x 200, current 5520 x 2160, maximum 16384 x 16384
DisplayPort-0 connected 3840x2160+1680+0 (normal left inverted right x axis y axis) 1872mm x 1053mm
   3840x2160     30.00*+  25.00    24.00    29.97    23.98  
   4096x2160     30.00    25.00    24.00    29.97    23.98  
   1920x1200     30.00  
   1920x1080     60.00    50.00    59.94    30.00    25.00    24.00    29.97    23.98  
   1600x1200     30.00  
   1680x1050     59.88  
   1600x900      60.00  
   1280x1024     75.02    60.02  
   1440x900      59.90  
   1366x768      59.79  
   1280x800      59.91  
   1152x864      75.00  
   1280x720      60.00    50.00    59.94  
   1024x768      75.03    70.07    60.00  
   832x624       74.55  
   800x600       72.19    75.00    60.32  
   720x576       50.00  
   720x480       60.00    59.94  
   640x480       75.00    72.81    66.67    60.00    59.94  
   720x400       70.08  
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 1680x1050+0+552 (normal left inverted right x axis y axis) 473mm x 296mm
   1680x1050     59.95*+  59.88  
   1280x1024     75.02    60.02  
   1440x900      74.98    59.90  
   1280x960      60.00  
   1280x800      59.95  
   1152x864      75.00  
   1280x720      60.00    50.00    59.94  
   1024x768      75.03    60.00  
   832x624       74.55  
   800x600       75.00    60.32    56.25  
   720x576       50.00  
   720x480       60.00    59.94  
   640x480       75.00    60.00    59.94  
   720x400       70.08

I think to have given all informations, if not, ask for more. Some questions I have, can the drivers could be not optimized for this CG, grub/bios options?
Screens connection are HDMI/HDMI for the 22’ and HDMI/Displayport for the 46’

Many thank for your help :pray:

2

Hi @La_Fouif,

I am not sure, but on reading your problem, it sounds like a classical case of priorities. As if the 46" gets priority over the 22". I THINK you’ll have to switch outputs.

Although, I’m first to admit I might be wrong, in which case I have no cooking clue further.

I hope you get this sorted!

Also, just a tip:

To provide terminal output, copy the text you wish to share, and paste it here, surrounded by three (3) backticks, a.k.a grave accents. Like this:

```
pasted text
```

This will just cause it to be rendered like this:

Portaest sed
elementum
cursus nisl nisi
hendrerit ac quis
sit
adipiscing
tortor sit leo commodo.

Instead of like this:

Portaest sed elementum cursus nisl nisi hendrerit ac quis sit adipiscing tortor sit leo commodo.

Thereby improving legibility and making it much easier for those trying to be of assistance.

Please edit your post accordingly.

3

Hello Mirdarthos
thank for your reply, I will try to switch the differents positions connections I’ve with the CG. Only one HDMI is available, all the others are DP. Nothing to do with my drivers configuration? all seem to be well?
Regards

4

Considering it’s identified and using the kernel drivers, all seems well in that regard. But, as I mentioned, I might be wrong since I

  1. am no expert; and
  2. don’t have an AMD card.

But I hope you manage!

5

Do you try setting up profiles?