https://bugs.kde.org/show_bug.cgi?id=461708
Bug ID: 461708
Summary: External monitor through HDMI - USB-C adapter
detected, but gives black screen after login
Classification: Plasma
Product: KScreen
Version: 5.24.6
Platform: Kubuntu
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: common
Assignee: kscreen-bugs-n...@kde.org
Reporter: andre.maz...@gmail.com
Target Milestone: ---
Created attachment 153679
--> https://bugs.kde.org/attachment.cgi?id=153679&action=edit
Display is shown in the "Devices" tab but it's not possible to configure it
SUMMARY
***
NOTE: If you are reporting a crash, please try to attach a backtrace with debug
symbols.
See
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***
I'm facing a problem with my external display (connected via USB-C). It
properly detected during the boot and when asking for credentials to login.
However after the login the external screen goes black and it's not shown in
the "Display and Config" tab. For more context please see the video:
https://www.youtube.com/watch?v=vKxg4BjhoVA
The screen is detected by the xrandr, here's the result
```
xrandr -q
Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 16384 x 16384
eDP connected primary 1920x1080+0+0 (normal left inverted right x axis y axis)
310mm x 174mm
2560x1440 120.00 + 60.00
1920x1200 120.00
1920x1080 120.00*
1600x1200 120.00
1680x1050 120.00
1280x1024 120.00
1440x900 120.00
1280x800 120.00
1280x720 120.00
1024x768 120.00
800x600 120.00
640x480 120.00
HDMI-A-0 disconnected (normal left inverted right x axis y axis)
DP-1-0.1 connected (normal left inverted right x axis y axis)
1920x1080 60.00 + 59.94 50.00
1680x1050 59.95
1440x900 59.89
1440x576 50.00
1440x480 59.94
1280x1024 75.02 60.02
1280x960 60.00
1280x720 60.00 59.94 50.00
1152x864 75.00
1024x768 75.03 70.07 60.00
800x600 75.00 72.19 60.32 56.25
720x576 50.00
720x480 59.94
640x480 75.00 72.81 59.94 59.93
DP-1-0 disconnected (normal left inverted right x axis y axis)
DP-1-1 disconnected (normal left inverted right x axis y axis)
```
OBSERVED RESULT
Not able to configure the external screen.
EXPECTED RESULT
To be able to configure the external screen.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Kubuntu LTS 22.04
(available in About System)
KDE Plasma Version: 5.24.6
KDE Frameworks Version: 5.92.0
Qt Version: 5.15.3
ADDITIONAL INFORMATION
Laptop Model: Asus ROG Zephyrus G14 GA401QE
CPU: Ryzen 5900HS
GPU: Nvidia 3050 Ti
NVidia drivers info: Driver Version: 520.56.06 CUDA Version: 11.8
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