Arch Linux

NachoGoro

Member

Registered: 2020-10-31

Posts: 24

Second monitor detected but no output

I am running Arch with KDE as the desktop environment. A few days ago, one of my monitors, conected via DVI started displaying nothing.

I can see it is recognized in Display Configuration, and it is enabled, but it shows nothing (not even in the login screen).

It works fine when booting in Windows, so I do not think it is the cable. I have tried lowering the resolution to no avail, as well as booting with both linux and linux-lts. I am using X11, not Wayland.

Here is the output of `xrandr`, please let me know what else might be necessary to debug:

Screen 0: minimum 8 x 8, current 5120 x 1440, maximum 32767 x 32767
DVI-D-0 connected 2560x1440+2560+0 (normal left inverted right x axis y axis) 600mm x 340mm
   2560x1440    143.93*+ 120.00    59.95  
   3840x2160     59.94    50.00    29.97    25.00    23.98  
   1920x1080    119.88    60.00    59.94    50.00  
   1280x720      59.94    50.00  
   1024x768      60.00  
   800x600       60.32  
   720x576       50.00  
   720x480       59.94  
   640x480       59.94    59.93  
HDMI-0 connected primary 2560x1440+0+0 (normal left inverted right x axis y axis) 600mm x 340mm
   2560x1440    143.93*+ 120.00    59.95  
   3840x2160     59.94    50.00    29.97    25.00    23.98  
   1920x1080    119.88    60.00    59.94    50.00  
   1280x720      59.94    50.00  
   1024x768      60.00  
   800x600       60.32  
   720x576       50.00  
   720x480       59.94  
   640x480       59.94    59.93  
DP-0 disconnected (normal left inverted right x axis y axis)
DP-1 disconnected (normal left inverted right x axis y axis)

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 25,223

Re: Second monitor detected but no output

Known bug on nvidia-555x, either downgrade to a variant of 550 or 535xx in the AUR, see https://bbs.archlinux.org/viewtopic.php?id=297296 as well.