It's certainly possible something has fixed it, like maybe the recent update to Xorg 1.20.8. Can anyone else confirm?
** Changed in: xorg-server (Ubuntu) Status: Fix Released => Incomplete -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1861609 Title: [focal] Xorg crashed with assertion failure (usually in a VM) at [privates.h:121: dixGetPrivateAddr: Assertion `key->initialized' failed] and call stack comes from DRIMoveBuffersHelper Status in xorg-server package in Ubuntu: Incomplete Bug description: Xorg crashed with assertion failure (usually in a VM): privates.h:121: dixGetPrivateAddr: Assertion `key->initialized' failed. and call stack comes from DRIMoveBuffersHelper WORKAROUND Select 'Ubuntu on Wayland' on the login screen. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1861609/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp