Oh, you said that downgrade was a workaround. So in that case this sounds like a bug in libgl1-mesa- dri_19.0.2-1ubuntu1.1~18.04.1_amd64.deb
** Tags added: regression-update ** Also affects: xorg-server (Ubuntu) Importance: Undecided Status: New ** Changed in: mesa (Ubuntu) Status: Incomplete => New -- 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/1836772 Title: Xorg crash on 3d-enabled virgl (Haswell host) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/1836772/+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