I found the real reason for the crashes. The problematic package is the `gstreamer1.0-vaapi` (see https://packages.ubuntu.com/focal/gstreamer1.0-vaapi). It is a dependency of `ubuntu-restricted-addons` (see https://packages.ubuntu.com/focal/ubuntu-restricted-addons).
So ubuntu-mate-welcome and for example Cheese may be fixed by removing this package with ``` sudo apt-get purge gstreamer1.0-vaapi sudo apt-get autoremove --purge # to remove libgstreamer-plugins-bad1.0-0 (is not a problem) ``` So please carefully analyze the crash dumps for errors in `gstreamer1.0-vaapi` and fix this package. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1796437 Title: X11 crashed when attempting to open Budgie and MATE Welcome To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gstreamer-vaapi/+bug/1796437/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
