On Sat, 08 Oct 2016, Vadim Lobanov <vadimplobanov at gmail.com> wrote: > I'm seeing a repeatable crash on my HP EliteBook 840 G2/2216 when > booting it while in a docking station connected to two external > DisplayPort monitors, undocking, and then either logging out or > shutting down -- regardless of whether I've redocked it beforehand or > not. Both logout and shutdown work great if I do not undock the laptop > at all, so the badness correlates with the DP monitors going away.
Please file a bug at [1] with the info in this mail, add drm.debug=14 module parameter, and attach dmesg from boot to the problem into the bug. BR, Jani. [1] https://bugs.freedesktop.org/enter_bug.cgi?product=DRI&component=DRM/Intel -- Jani Nikula, Intel Open Source Technology Center