https://bugs.kde.org/show_bug.cgi?id=357975
Bug ID: 357975
Summary: Unrecoverable blank screen
Product: kscreenlocker
Version: unspecified
Platform: Other
OS: Linux
Status: UNCONFIRMED
Severity: critical
Priority: NOR
Component: general
Assignee: plasma-b...@kde.org
Reporter: gree...@greenrd.org
CC: bhus...@gmail.com, mgraess...@kde.org
I have configured the top-right screen corner to lock the screen if I move my
mouse into it, and also configured Meta+L to lock the screen. I was shoving my
mouse pointer into the top right corner of the screen and nothing was
happening, so I pressed Meta+L, but still nothing happened.
When I returned from my meeting, the screens were black, with just a mouse
pointer. I could switch to VT2 with Ctrl+Alt+F2, so I did so and ran top. kwin
was using 100% CPU so I killed it, and switched back to VT1. This brought my
desktop back, but of course kwin was not running and also, I could not click on
anything. When I tried to rerun kwin from VT2, I again experienced black
screens on VT1. I then noticed on VT2 that the screen lock greeter was still
running. I attempted to kill this but it respawned. I then attempted to kill
its parent, which killed my KDE session. After I then logged in, my new KDE
session was somehow broken, so I had to reboot, and then things worked again.
Reproducible: Didn't try
Steps to Reproduce:
Unknown
I was running toggl and by the time I returned from my meeting, it had raised a
popup - that could be relevant. Also, there was an error message printed from
kwin when I restarted it, mentioning KWayland - not sure if that is relevant -
I am not running Wayland.
I'm guessing this is some kind of race condition because locking normally
works.
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