I'd like to note that, on Xubuntu at least, these crashes are eliminated by removing libva-wayland2.
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/2013071/comments/9 -- You received this bug notification because you are a member of Canonical's Ubuntu QA, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1861609 Title: Xorg crashed with assertion failure (usually in a VM) at [privates.h:121/122: dixGetPrivateAddr: Assertion `key->initialized' failed] and call stack comes from DRIMoveBuffersHelper Status in X.Org X server: New Status in xorg-server package in Ubuntu: Confirmed 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/xorg-server/+bug/1861609/+subscriptions -- Mailing list: https://launchpad.net/~canonical-ubuntu-qa Post to : canonical-ubuntu-qa@lists.launchpad.net Unsubscribe : https://launchpad.net/~canonical-ubuntu-qa More help : https://help.launchpad.net/ListHelp
