Thanks for the reply. I'll run Apport as soon as I can access the machine again.
Regarding the actual issue, I don't think it is as cut and dry as this being just about rendering alone, as that would imply that the rendering performance was consistently bad. As I wrote, the performance seems fine on a fresh boot and also after restarting gnome-session (once the bug has appeared), which would not be the case if this was down to just rendering. Some kind of memory issue (leak, fragmentation, ...) seems to play a part in order to explain the time component. Also, there is no window preview (which I assume is a small boxed window preview when Alt-Tab-ing) when I have disabled the Coverflow plugin, yet the stuttering performance was very much present. When it comes to testing out the issue with 19.04, you'll have to bear with me, as this issue takes some time to materialize :-) I have not been able to reproduce it in a short time. Are there any debugging tools I can employ to gain some insight/stats/vitals if/when I encounter this issue? -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1817620 Title: High cpu usage on alt-tab-ing To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1817620/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
