Team, Installing xserver-xorg-video-intel fixed the issue:
sudo apt-get install xserver-xorg-video-intel If you have it installed already, try reinstalling it after an upgrade: sudo apt-get install --reinstall xserver-xorg-video-intel System Info: Lenovo T430 Lubuntu 16.04 Error which helped me find out the solution (in /var/log/syslog): [drm] GPU HANG: ecode 7:0:0x85ffbcfc, in Xorg [872], reason: Ring hung, action: reset Hope this helps. Cheers! -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1575301 Title: GPU Hang [i915 / drm] crashes whole session; triggered by LibreOffice dialog boxes (regression) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1575301/+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