Were you able to update mesa to see if it fixes the issue?
** Changed in: kwin (Ubuntu) Status: New => Incomplete ** Changed in: mesa (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to mesa in Ubuntu. https://bugs.launchpad.net/bugs/2021881 Title: Kwin and plasmashell freeze randomly Status in kwin package in Ubuntu: Incomplete Status in mesa package in Ubuntu: Incomplete Bug description: kwin and plasmashell randomly freeze usually when there is a notification window pop up. I have to use kwin_x11 --replace or plasmashell --replace in order to make screen responsive. Please note I can still type to the app that currently is open (let's say FeatherPad) but things are stuck and I cannot switch tasks. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/kwin/+bug/2021881/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp