Public bug reported: Several schools reported black screens after normally updating their Ubuntu boxes from 18.0.5-0ubuntu0~18.04.1 to 18.2.2-0ubuntu1~18.04.1.
Downgrading mesa fixes the problem. lspci: 00:02.0 VGA compatible controller [0300]: Intel Corporation HD Graphics 530 [8086:1912] (rev 06) Subsystem: ASUSTeK Computer Inc. HD Graphics 530 [1043:8694] Kernel modules: i915 Unfortunately I can't find a lot of useful information, here are some bits: * systemctl --failed says "gpu-manager" and "lightdm" have failed * Xorg.log is clean: https://termbin.com/6l2b * dmesg too: https://termbin.com/ip4e * It happens on lightdm/MATE, I don't know about Ubuntu GNOME. * If one runs `xinit` from ssh, it fails with: i965: Failed to submit batchbuffer: Invalid argument ** Affects: mesa Importance: Unknown Status: Unknown ** Affects: mesa (Ubuntu) Importance: Undecided Status: New ** Affects: mesa (Ubuntu Bionic) Importance: Undecided Assignee: Timo Aaltonen (tjaalton) Status: New ** Affects: mesa (Ubuntu Cosmic) Importance: Undecided Assignee: Timo Aaltonen (tjaalton) Status: New ** Bug watch added: freedesktop.org Bugzilla #109583 https://bugs.freedesktop.org/show_bug.cgi?id=109583 ** Also affects: mesa via https://bugs.freedesktop.org/show_bug.cgi?id=109583 Importance: Unknown Status: Unknown -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to mesa in Ubuntu. https://bugs.launchpad.net/bugs/1815172 Title: Black screen on skylake after 18.0 => 18.2 update To manage notifications about this bug go to: https://bugs.launchpad.net/mesa/+bug/1815172/+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
