https://bugs.kde.org/show_bug.cgi?id=450301
--- Comment #3 from nyanpasu64 <nyanpas...@tuta.io> --- Just hit this bug again. When waking my computer, I got an upside-down foobar2000 on a black screen instead of the lock screen. When my mouse cursor moved in and out of the password text field, it changed to a text cursor, and *sometimes* (not always) the lock screen appeared for around 1-2 frames in my smartphone video recording (uploaded to https://youtu.be/90tbG_c3-cQ). The time between two adjacent appearances of the lock screen was around 24, 22, or 17 frames (not exactly matching the caret flash rate). IIRC typing the password didn't make the lock screen appear. I checked my journal afterwards, and at the time I woke the machine, I saw "kwin_x11[293413]: OpenGL vendor string:" and "BlurConfig::instance called after the first use - ignoring", etc.. I restarted kwin, then tried sleeping and waking the machine again (without the bug occurring) and saw the same messages reappear in my journal, meaning they appear both with and without the bug occurring. I suspect KWin randomly corrupts when trying to restart compositing. Running kwin_x11 under Valgrind and sleep-waking my system, I see a bunch of uninitialized memory reads/syscalls, such as "Invalid read of size 16". All have a stack trace for where they're allocated, but most lack a stack trace for where they're read (just two hex addresses with no symbol names, and no path to main()). There's no smoking gun, no obvious memory misuse, just a pile of errors from random libraries (including /usr/lib/libGLX_nvidia.so.470.103.01) which I don't understand. In any case I've posted the logs at https://gist.github.com/nyanpasu64/db0518c4f08569a39acb810d936fcd01. -- You are receiving this mail because: You are watching all bug changes.
