https://bugs.kde.org/show_bug.cgi?id=375331

anomalous...@gmail.com changed:

           What    |Removed                     |Added
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                 CC|                            |anomalous...@gmail.com

--- Comment #11 from anomalous...@gmail.com ---
This just started happening for me in the past week or two on Arch Linux with
the stock repo packages. Had been working fine up to that point. Randomly after
a suspend-to-ram or monitor-suspend, the screen comes up entirely black with a
themed mouse cursor able to be moved.

I'm able to ctrl-alt-f2 into a terminal. I've tried poking around a bit to see
what exactly is borked but the best I can come up with kwin_x11 has trashed
itself in an unrecoverable and unlogged way. 

Trying to "DISPLAY=:0 kwin_x11 --replace" with or without the kquitapp5 /
kstart5 voodoo results in a compositing unavailable error in the syslog. I'm
not able to recover my session or any desktop environment once this occurs.

Following prior discussion, I saw nothing of note in kscreen-doctor: it outputs
the same 3 monitors enabled and connected before and after the black screen
occurs.

KDE Plasma Version 5.19.3
KDE Frameworks     5.72.0
Qt Version         5.15.0
Kernel Version     5.7.9-arch1-1 / 64-bit

Running on Ryzen 1700x & Nvidia GTX 1080 with binary driver 450.57 (I tried
rolling back to the previous driver, version 440, with no success).

Please let me know if there is any logging or triage I can do to help uncover
this mystery.

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