It looks that I'm struck by the same bug. For me all KDE applications show display problems, not only just konsole. But konsole is the one that's used most often.
After you have "fixed" you installation now, could you please turn off the composite manager. Just use Shift-Alt-F12 for that. I do not get any display errors here as long as the composite manager runs. Is the problem back without composite manager? -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1944951 Title: delayed display update / konsole artifacts To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1944951/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp