https://bugs.kde.org/show_bug.cgi?id=456369
Bug ID: 456369
Summary: Plasma Shell 5.25: Black screen when disconnecting
external monitor with no hope of recovery
Product: plasmashell
Version: 5.25.2
Platform: Archlinux Packages
OS: Linux
Status: REPORTED
Severity: major
Priority: NOR
Component: general
Assignee: plasma-b...@kde.org
Reporter: robertdeja...@tutanota.com
CC: k...@davidedmundson.co.uk
Target Milestone: 1.0
Created attachment 150427
--> https://bugs.kde.org/attachment.cgi?id=150427&action=edit
Some journalctl entries from the previous boot (that got stuck because of this
issue)
After upgrading to Plasma Desktop 5.25, disconnecting a monitor attached
through USB-C (HDMI Alt Mode) results in a black screen.
Reconnecting it does not restore video.
The only thing that helps is to force a reboot.
I cannot try a direct HDMI connection, because my laptop doesn't have one.
It happens consistently since upgrading the Plasma Desktop.
Version 5.24 worked fine.
I have tried a Gnome session to make sure nothing else is causing this issue.
In Gnome it works fine.
STEPS TO REPRODUCE
1. Start a Plasma Shell session with an external monitor connected using an
USB-C dock
2. Disconnect either the monitor, or the whole dock
3. Laptop screen does not turn on
4. Reconnect the external monitor / dock
5. No image on either monitor
6. Try to switch to a virtual terminal (ctrl-alt-f3)
7. Still no picture
Black screen, no matter what I do
Laptop screen turns on when disconnecting the monitor, external screen shows
desktop when plugging it back in.
SOFTWARE/OS VERSIONS
Linux version: 5.18.9
KDE Plasma Version: 5.25.0 / 5.25.1 / 5.25.2
KDE Frameworks Version: 5.95.0
Qt Version: 5.15.5+kde+r167
Mesa Version: 22.1.3
Hardware:
Dell XPS 13 9310 2 in 1
Intel Core i7 1165G7
Iris XE Graphics
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