Today I switched my USB-C dock and now I am experiencing interesting issues on my Tuxedo Notebook with Kubuntu 20.04.
I have two display connected to my laptop via the USB-C dock. Although both displays show up in xrandr (see below) and in the Display Dialog, only one of them can be enabled.
I can enable one or the other, but not both. If I switch both displays to "Enabled" in the dialog, that is not saved and when I re-open the dialog the second monitor is still not enabled.
I was unable to find anything similar in the forum. I tried adjusting the resolution as well as the refresh rate of the monitors, but that did not change anything.
I have a second Tuxedo Laptop (for work) which also runs Kubuntu 20.04 and that one connects via the exact same setup without issues...
Also with my previous USB-C dock and display, both laptops worked in this setup without issues.
Any hint into the right direction would be greatly appreciated!
eDP-1 connected 1920x1080+1152+484 (normal left inverted right x axis y axis) 309mm x 173mm
1920x1080 60.01*+ 60.01 59.97 59.96 59.93
1680x1050 59.95 59.88
1600x1024 60.17
1400x1050 59.98
1600x900 59.99 59.94 59.95 59.82
1280x1024 60.02
1440x900 59.89
1400x900 59.96 59.88
1280x960 60.00
1440x810 60.00 59.97
1368x768 59.88 59.85
1360x768 59.80 59.96
1280x800 59.99 59.97 59.81 59.91
1152x864 60.00
1280x720 60.00 59.99 59.86 59.74
1024x768 60.04 60.00
960x720 60.00
928x696 60.05
896x672 60.01
1024x576 59.95 59.96 59.90 59.82
960x600 59.93 60.00
960x540 59.96 59.99 59.63 59.82
800x600 60.00 60.32 56.25
840x525 60.01 59.88
864x486 59.92 59.57
800x512 60.17
700x525 59.98
800x450 59.95 59.82
640x512 60.02
720x450 59.89
700x450 59.96 59.88
640x480 60.00 59.94
720x405 59.51 58.99
684x384 59.88 59.85
680x384 59.80 59.96
640x400 59.88 59.98
576x432 60.06
640x360 59.86 59.83 59.84 59.32
512x384 60.00
512x288 60.00 59.92
480x270 59.63 59.82
400x300 60.32 56.34
432x243 59.92 59.57
320x240 60.05
360x202 59.51 59.13
320x180 59.84 59.32
DP-1 disconnected (normal left inverted right x axis y axis)
HDMI-1 disconnected (normal left inverted right x axis y axis)
HDMI-2 disconnected (normal left inverted right x axis y axis)
DP-1-1 connected 1152x2048+0+0 right (normal left inverted right x axis y axis) 510mm x 290mm
2048x1152 59.91*+
1920x1080 60.00 50.00 59.94 25.00 24.00 23.98
1680x1050 59.88
1280x1024 75.02 60.02
1152x864 75.00
1280x720 60.00 50.00 59.94
1024x768 75.03 60.00
800x600 75.00 60.32
720x576 50.00
720x480 60.00 59.94
640x480 75.00 60.00 59.94
720x400 70.08
DP-1-2 connected (normal left inverted right x axis y axis)
2560x1440 59.95 + 74.97
2048x1080 60.00 24.00
1920x1080 60.00 50.00 59.94 25.00 24.00 23.98
1600x900 60.00
1280x1024 75.02 60.02
1152x864 75.00
1280x720 60.00 50.00 59.94
1024x768 75.03 60.00
800x600 75.00 60.32
720x576 50.00
720x480 60.00 59.94
640x480 75.00 60.00 59.94
720x400 70.08
DP-1-3 disconnected (normal left inverted right x axis y axis)
DVI-I-4-4 disconnected (normal left inverted right x axis y axis)
DVI-I-3-3 disconnected (normal left inverted right x axis y axis)
DVI-I-2-2 disconnected (normal left inverted right x axis y axis)
DVI-I-1-1 disconnected (normal left inverted right x axis y axis)
EDIT:
to add some more information, the output of xrandr --auto shows an error with CRTC 2:
xrandr: Configure crtc 2 failed
