Upstream states that it is already fixed. Now I re-read the errors.ubuntu.com reports it last occurred in 2:1.17.2-1ubuntu9 - so it has almost certainly been fixed in the git snapshot.
** Changed in: xserver-xorg-video-intel (Ubuntu) Status: New => Fix Released -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1502052 Title: /usr/bin/Xorg:6:_list_del:list_del:__kgem_retire_rq:__kgem_retire_requests_upto:kgem_bo_retire To manage notifications about this bug go to: https://bugs.launchpad.net/xserver-xorg-video-intel/+bug/1502052/+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