https://bugs.kde.org/show_bug.cgi?id=454387
--- Comment #7 from Zamundaaa <xaver.h...@gmail.com> --- The actual output detection stuff takes less than a second, but then it appears to fail to set the mode (which should never ever happen). Weirdly, after that it also seems to do nothing at all for an entire minute, and then there's an output change event, which makes KWin reload stuff and then it works. As a first step I'd like to find out why setting the mode fails. In order to do that, you can enable drm debug logging like so: echo 0xFE | sudo tee /sys/module/drm/parameters/debug Then make it save the log into a file: sudo dmesg -w > drm-debug.log Now reproduce the bug with the dmesg command running, then stop it and disable drm logging again with echo 0 | sudo tee /sys/module/drm/parameters/debug and upload the drm-debug.log file -- You are receiving this mail because: You are watching all bug changes.