https://bugs.kde.org/show_bug.cgi?id=466020
Bug ID: 466020
Summary: Multimonitor set-up. HDPI laptop + 2 displays with
different sizes and resolutions via usb-c dock.
Classification: Plasma
Product: plasmashell
Version: 5.27.0
Platform: Archlinux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Multi-screen support
Assignee: plasma-b...@kde.org
Reporter: k...@use.startmail.com
CC: aleix...@kde.org, notm...@gmail.com
Target Milestone: 1.0
Created attachment 156453
--> https://bugs.kde.org/attachment.cgi?id=156453&action=edit
output ksreen-doctor -o + ksreen-console + cat
~/.config/plasma-org.kde.plasma.desktop-appletsrc
SUMMARY
***
I have 2 external monitors connected to my hdpi laptop via a usb-c docking
station. If I am under wayland and I connect to the monitors one screen always
stays black, but I can move my mouse and windows in it.
Interestingly the screen gets reactivated, when I lower the resolution of the
dark monitor.
If I disconnect both monitors and replug them one at a time (in the usb-c dock)
the first monitor to get plugged in works. The second stays dark.
In X11 it works.
***
STEPS TO REPRODUCE
1. Log into the wayland shell.
2. Connect the usb-c dock with the 2 monitors attached.
OBSERVED RESULT
One screen stays black.
If I lower the resolution it works.
EXPECTED RESULT
All screens should work with their native resolution.
SOFTWARE/OS VERSIONS
Windows:
macOS:
Linux/KDE Plasma: 6.1.12-arch1-1 (64-bit)
(available in About System)
KDE Plasma Version: 5.27.0
KDE Frameworks Version: 5.103.0
Qt Version: 5.15.8
ADDITIONAL INFORMATION
usb-c dock:
https://www.cablematters.com/pc-1295-126-usb-c-multiport-adapter-with-triple-displayport-pd.aspx
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