August 27, 2021 5:26 PM, "Nicolas George" <geo...@nsup.org> wrote: > What does the command "xrandr" say before you connect the cable and > after?
The cables are always connected. Graphics card --> HDMI cable --> HDMI switch --> HDMI cable --> projector. If I started the system with the projector turned off, the output is always: Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 16384 x 16384 DVI-I-0 disconnected (normal left inverted right x axis y axis) DVI-I-1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 480mm x 270mm 1920x1080 60.00*+ 1680x1050 59.95 1600x900 60.00 1440x900 59.89 1400x1050 59.98 1280x1024 75.02 60.02 1280x800 59.81 1280x720 60.00 1152x864 75.00 1024x768 75.03 60.00 800x600 75.00 60.32 640x480 75.00 59.94 HDMI-0 disconnected (normal left inverted right x axis y axis) DP-0 disconnected (normal left inverted right x axis y axis) DP-1 disconnected (normal left inverted right x axis y axis) DP-2 disconnected (normal left inverted right x axis y axis) DP-3 disconnected (normal left inverted right x axis y axis) DP-4 disconnected (normal left inverted right x axis y axis) DP-5 disconnected (normal left inverted right x axis y axis) No matter if the projector is turned on or off or the switch is set to PC input or another input. When starting with projector turned on and switch set to PC input: Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 16384 x 16384 DVI-I-0 disconnected (normal left inverted right x axis y axis) DVI-I-1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 480mm x 270mm 1920x1080 60.00*+ 1680x1050 59.95 1600x900 60.00 1440x900 59.89 1400x1050 59.98 1280x1024 75.02 60.02 1280x800 59.81 1280x720 60.00 1152x864 75.00 1024x768 75.03 60.00 800x600 75.00 60.32 640x480 75.00 59.94 HDMI-0 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 1600mm x 900mm 1920x1080 60.00*+ 59.94 50.00 29.97 23.98 60.05 60.00 50.04 1440x576 50.00 1440x480 59.94 1280x720 59.94 50.00 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) DP-2 disconnected (normal left inverted right x axis y axis) DP-3 disconnected (normal left inverted right x axis y axis) DP-4 disconnected (normal left inverted right x axis y axis) DP-5 disconnected (normal left inverted right x axis y axis) Switching the projector off again, the output reverts to Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 16384 x 16384 DVI-I-0 disconnected (normal left inverted right x axis y axis) DVI-I-1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 480mm x 270mm 1920x1080 60.00*+ 1680x1050 59.95 1600x900 60.00 1440x900 59.89 1400x1050 59.98 1280x1024 75.02 60.02 1280x800 59.81 1280x720 60.00 1152x864 75.00 1024x768 75.03 60.00 800x600 75.00 60.32 640x480 75.00 59.94 HDMI-0 disconnected (normal left inverted right x axis y axis) DP-0 disconnected (normal left inverted right x axis y axis) DP-1 disconnected (normal left inverted right x axis y axis) DP-2 disconnected (normal left inverted right x axis y axis) DP-3 disconnected (normal left inverted right x axis y axis) DP-4 disconnected (normal left inverted right x axis y axis) DP-5 disconnected (normal left inverted right x axis y axis) Switching it afterwards on again, nothing changed (HDMI-0 is still disconnected). Any ideas? Best regards, Harald
