The newest Mesa version 19.2.1-1ubuntu1~18.04.1~ppa2 in ppa:ubuntu-x-swat/updates has fixed that problem for me. Thanks!
-- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to mesa in Ubuntu. https://bugs.launchpad.net/bugs/1835622 Title: Cannot start desktop session with compositor enabled To manage notifications about this bug go to: https://bugs.launchpad.net/xfwm4/+bug/1835622/+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