Comment 32 for bug 1384342

Just had it occur for the second time, two weeks after the first time. Unlike the first time, this time the mouse cursor did move (while everything else was frozen), but the system did not recover, and I had to ssh into the machine (which was possible, confirming that it's just the display that's broken) and reboot it. I'm also on Haswell, fwiw.

The stack trace is slightly different than before:

Nov 13 20:15:59 pc kernel: [1630241.453354] CPU: 5 PID: 1806 Comm: Xorg Tainted: G W OE 3.16.0-23-generic #31-Ubuntu
Nov 13 20:15:59 pc kernel: [1630241.453356] Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./Z87 Extreme6, BIOS P2.40 07/08/2014
Nov 13 20:15:59 pc kernel: [1630241.453358] 0000000000000009 ffff8804082ffc18 ffffffff8177fcbc 0000000000000000
Nov 13 20:15:59 pc kernel: [1630241.453361] ffff8804082ffc50 ffffffff8106fd8d 0000000000000000 ffff880408fd6000
Nov 13 20:15:59 pc kernel: [1630241.453364] ffff880035938210 ffff880404b88800 ffff880404b88800 ffff8804082ffc60
Nov 13 20:15:59 pc kernel: [1630241.453367] Call Trace:
Nov 13 20:15:59 pc kernel: [1630241.453375] [<ffffffff8177fcbc>] dump_stack+0x45/0x56
Nov 13 20:15:59 pc kernel: [1630241.453381] [<ffffffff8106fd8d>] warn_slowpath_common+0x7d/0xa0
Nov 13 20:15:59 pc kernel: [1630241.453384] [<ffffffff8106fe6a>] warn_slowpath_null+0x1a/0x20
Nov 13 20:15:59 pc kernel: [1630241.453406] [<ffffffffc0283ffc>] intel_crtc_wait_for_pending_flips+0x16c/0x180 [i915]
Nov 13 20:15:59 pc kernel: [1630241.453411] [<ffffffff810b9590>] ? prepare_to_wait_event+0x100/0x100
Nov 13 20:15:59 pc kernel: [1630241.453432] [<ffffffffc0286ac3>] intel_crtc_disable_planes+0x33/0x1c0 [i915]
Nov 13 20:15:59 pc kernel: [1630241.453436] [<ffffffff81784e5b>] ? __ww_mutex_lock+0x1b/0xb0
Nov 13 20:15:59 pc kernel: [1630241.453456] [<ffffffffc0287a17>] haswell_crtc_disable+0x57/0x2e0 [i915]
Nov 13 20:15:59 pc kernel: [1630241.453459] [<ffffffff81785ab2>] ? mutex_lock+0x12/0x30
Nov 13 20:15:59 pc kernel: [1630241.453478] [<ffffffffc0288457>] intel_crtc_update_dpms+0x67/0xa0 [i915]
Nov 13 20:15:59 pc kernel: [1630241.453497] [<ffffffffc028cac9>] intel_connector_dpms+0x59/0x70 [i915]
Nov 13 20:15:59 pc kernel: [1630241.453516] [<ffffffffc00fbe19>] drm_mode_obj_set_property_ioctl+0x399/0x3a0 [drm]
Nov 13 20:15:59 pc kernel: [1630241.453534] [<ffffffffc00fbe50>] drm_mode_connector_property_set_ioctl+0x30/0x40 [drm]
Nov 13 20:15:59 pc kernel: [1630241.453546] [<ffffffffc00eaa4f>] drm_ioctl+0x1df/0x680 [drm]
Nov 13 20:15:59 pc kernel: [1630241.453553] [<ffffffff8101c2f9>] ? read_tsc+0x9/0x20
Nov 13 20:15:59 pc kernel: [1630241.453557] [<ffffffff811f4bc8>] do_vfs_ioctl+0x2c8/0x4a0
Nov 13 20:15:59 pc kernel: [1630241.453561] [<ffffffff81080a52>] ? __set_task_blocked+0x32/0x80
Nov 13 20:15:59 pc kernel: [1630241.453564] [<ffffffff81083986>] ? __set_current_blocked+0x36/0xc0
Nov 13 20:15:59 pc kernel: [1630241.453567] [<ffffffff811f4e21>] SyS_ioctl+0x81/0xa0
Nov 13 20:15:59 pc kernel: [1630241.453571] [<ffffffff81787ced>] system_call_fastpath+0x1a/0x1f
Nov 13 20:15:59 pc kernel: [1630241.453572] ---[ end trace 9b44a589aabc549d ]---