https://bugs.kde.org/show_bug.cgi?id=474360
Bug ID: 474360
Summary: [Wayland] KScreen does not enable external screens
when connecting to the other dock
Classification: Plasma
Product: KScreen
Version: 5.27.7
Platform: Other
OS: Other
Status: REPORTED
Severity: normal
Priority: NOR
Component: common
Assignee: kscreen-bugs-n...@kde.org
Reporter: o...@geek.co.il
Target Milestone: ---
Created attachment 161533
--> https://bugs.kde.org/attachment.cgi?id=161533&action=edit
User journal from connecting the dock with the issue
SUMMARY
I have two docking stations (at home and at the office). The display
configuration is setup properly for both. When I work with one, I can take the
laptop off the dock and on again, including setting it to sleep, and it works
fine.
If I connect the laptop to the second dock - before waking the laptop, or after
- it won't turn on the external screens connected to the dock. I can see - in
the display configuration KCM - that it sees the external screens, but they are
disabled.
If I log out and log back in, the screens are correctly enabled, but if I then
go back to the first dock - the external screens are then detected and disabled
there, and I have to log out and log back in there as well.
STEPS TO REPRODUCE
1. Have a proper display configuration in with one dock with external screens.
2. Log out, connect to another dock with external screens, log in and set up
the screens there.
3. Disconnect second dock, put laptop to sleep, wake it up and connect to the
first dock.
OBSERVED RESULT
The external screens are disabled. When trying to enable them, it either does
not work (the checkbox is marked, after apply and OKing the configuration
change, but the screen remains off, closing and restarting the KCM shows the
screen is still disabled), or the screen resets to its default configuration
(horizontal and on the wrong side of the built-in screen).
EXPECTED RESULT
The external screens should be enabled and configured according to the original
configuration.
SOFTWARE/OS VERSIONS
Operating System: KDE neon 5.27
KDE Plasma Version: 5.27.7
KDE Frameworks Version: 5.109.0
Qt Version: 5.15.10
Kernel Version: 6.4.11-060411-generic (64-bit)
Graphics Platform: offscreen
Processors: 20 × 12th Gen Intel® Core™ i7-12700H
Memory: 31.0 GiB of RAM
Graphics Processor: Mesa Intel® Graphics
ADDITIONAL INFORMATION
I attached a log showing kscreen and kwin_wayland fighting among themselves (or
something 😜🫣) when connecting the dock.
Maybe one of the issues is that the external screens sometimes change port
numbers between different office days (sometimes they are DP-5 and DP-6, other
times DP-7 and DP-8), but that doesn't seem to have happened recently (I have
the kscreen config folder on git so I can track these things).
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