https://bugs.kde.org/show_bug.cgi?id=470590
Bug ID: 470590
Summary: After logging in or unlocking the screen, the external
monitor sometimes doesn't come on though it is active
in Plasma
Classification: Plasma
Product: kwin
Version: 5.27.5
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: firlaevhans.fi...@protonmail.com
Target Milestone: ---
SUMMARY
I have a laptop with a thunderbolt dock with an external monitor, and I
typically use both the internal and the external display at the same time.
Sometimes when I log in, the external monitor is behaving normally in SDDM but
once I'm in the Plasma Wayland session, it goes to sleep. However, as far as
Plasma is concerned the screen is active, my panel and windows stay on that
screen. I have to unplug and re-plug the thunderbolt dock to make it work
again.
The same thing occasionally happens when I wake the system from sleep and
unlock the screen, only the internal display wakes up while the external one
stays on stand-by.
The following lines appear in the journal when this happens:
>kwin_wayland_wrapper[16159]: warning: queue 0x56161e88c840 destroyed while
>proxies still attached:
>kwin_wayland_wrapper[16159]: wl_display@1 still attached
STEPS TO REPRODUCE
1. (Not sure how to reproduce reliably, unfortunately)
2. Boot up your laptop to SDDM while an external display is attached (not sure
if thunderbolt is important)
3. Log in to Plasma Wayland, which should be configured to use both the
internal and external display
OBSERVED RESULT
The external screen may stay black / go to sleep, but Plasma will still treat
it as an active screen.
EXPECTED RESULT
The external screen should just... work.
SOFTWARE/OS VERSIONS
Operating System: Fedora Linux 38
KDE Plasma Version: 5.27.5
KDE Frameworks Version: 5.106.0
Qt Version: 5.15.9
Kernel Version: 6.2.15-300.fc38.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 20 × 12th Gen Intel® Core™ i7-12700H
Memory: 15.3 GiB of RAM
Graphics Processor: Mesa Intel® Graphics
Manufacturer: Dell Inc.
Product Name: Inspiron 14 Plus 7420
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