@ Sebastien I'm not really sure of this, but i think this happens when Xscreensaver starts (wich i also have a bug for: https://bugs.launchpad.net/ubuntu/+source/gnome-shell-extension-ubuntu-dock/+bug/1849928 )
journal log attached ** Attachment added: "journal.txt" https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1854147/+attachment/5308616/+files/journal.txt -- 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/1854147 Title: Several xorg crashes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1854147/+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