I am using ubuntu 15.10/wily with the kubuntu backports PPA, which at the moment provides plasmashell 5.5.3. Every time I resume my computer from suspend to RAM plasmashell freezes and does not react to any input. At the same time krunner is working fine and I can start applications or use already open ones normally. The situation can be resolved by issuing killall plasmashell; plasmashell in krunner. Additionally the mouse cursor is reacting with a lot of jitter to mouse movements, until a notification that eth0 has been re-connected appears. Sometimes there is a notification that eth0 has gone down (probably a delayed notification from the suspend process). Thomas Lübking noted that this behaviour is caused by a deadlock between kwin and plasmashell. Please see https://bugs.kde.org/show_bug.cgi?id=358245#c6 for details. I will attach the backtraces. Reproducible: Always Steps to Reproduce: 1. Start KDE session. 2. Suspend machine to RAM. 3. Resume machine. There seems to be a possibility to circumvent the crash: 1. Log in normally on boot (Terminal 7) 2. Use the session manager (krunner -> sessions) to create a second session for another user 3. Log in on second session (Terminal 8) and stay on that terminal 4. Suspend system 5. Resume system 6. Switch from Terminal 8 to Terminal 7 with the original session and find the screen locked and plasmashell not crashed. Actual Results: kwin/Plasmashell does not react to input. Applications and krunner work. Expected Results: kwin/Plasmashell does react to inputs. Applications and krunner work. Possibly related bugs: https://bugs.kde.org/show_bug.cgi?id=352423 https://bugs.kde.org/show_bug.cgi?id=355457
Created attachment 97247 [details] Back trace of plasmashell 5.5.3 freeze after resume
Created attachment 97248 [details] Backtrace of kwin_x11.
Not exactly what I meant ;-) See bug #359467 for the kwin issue (it's not related to the plasmashell issue) I'm closing this one as it's rather confusing.