Yes, this is probably because only one session supports GL hardware acceleration at a time, and that probably triggers a bug somewhere inside the -nvidia driver.
** Changed in: nvidia-graphics-drivers-180 (Ubuntu) Importance: Undecided => High ** Changed in: nvidia-graphics-drivers-180 (Ubuntu) Status: Confirmed => Triaged -- glxinfo crashed with SIGSEGV while switch back from guest user. https://bugs.launchpad.net/bugs/353908 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to nvidia-graphics-drivers-180 in ubuntu. _______________________________________________ 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