sounds af if first kwin and later on, random clients get stalled (or the x event queue turns garbage) can you please try:
export KWIN_USE_INTEL_SWAP_EVENT=0 # only affects intel IGPs export KWIN_EXPLICIT_SYNC=0 # most likely candidate on nvidia GPUs export KWIN_USE_BUFFER_AGE=0 # well, you tried, but hey ... ;-) kwin_x11 --replace & -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1440210 Title: KWin crashes multiple times a day and often has to be restarted manually. To manage notifications about this bug go to: https://bugs.launchpad.net/kdebase-workspace/+bug/1440210/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs