Okay, pretty sure have found the right upstream bug, and have what looks like a good workaround.
$ gsettings set org.gnome.settings-daemon.plugins.xsettings antialiasing 'grayscale' https://gitlab.freedesktop.org/mesa/mesa/issues/2183 The steps to reproduce does kill the session with a gpu hang on the text drawing benchmark, after changing the antialiasing font mode and logging in again, it completes. Will run for the next few days and see if daily crashes continue or not. ** Summary changed: - [Ice Lake] WARN_ON(intel_wait_for_register(dev_priv, regs->driver, (0x1 << ((pw_idx) * 2)), (0x1 << ((pw_idx) * 2)), 1)) [from i915/intel_runtime_pm.c:308] + Reproduceable i915 gpu hang Intel Iris Plus Graphics (Ice Lake 8x8 GT2) ** Bug watch added: gitlab.freedesktop.org/mesa/mesa/issues #2183 https://gitlab.freedesktop.org/mesa/mesa/issues/2183 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1878670 Title: Reproduceable i915 gpu hang Intel Iris Plus Graphics (Ice Lake 8x8 GT2) Status in OEM Priority Project: Incomplete Status in linux package in Ubuntu: Triaged Status in linux-oem-osp1 package in Ubuntu: New Bug description: The system freezes frequently then logs out. If happens at apparently random times, and using no particular app. Extract of syslog is attached. Requested info is below: 1) release Ubuntu 18.04.2 LTS (beaver-osp1-melisa X30) 2) package version gnome-session: Installeret: (ingen) Kandidat: 3.28.1-0ubuntu3 Versionstabel: 3.28.1-0ubuntu3 500 500 http://dk.archive.ubuntu.com/ubuntu bionic-updates/universe amd64 Packages 3.28.1-0ubuntu2 500 500 http://dk.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages 3) Gnome shouldn't crash 4) Gnome crashed To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1878670/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
