*** This bug is a duplicate of bug 1454964 ***
https://bugs.launchpad.net/bugs/1454964
Similar for Dell XPS13 on 4.2.0-27-generic:
[63771.486542] INFO: task kworker/2:1:17383 blocked for more than 120 seconds.
[63771.486546] Tainted: P W OE 4.2.0-27-generic #32-Ubuntu
[63771.486546] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this
message.
[63771.486548] kworker/2:1 D 0000000000000002 0 17383 2 0x00000000
[63771.486568] Workqueue: events intel_mmio_flip_work_func [i915]
[63771.486570] ffff880009463b58 0000000000000046 ffff88020d868dc0
ffff8800863dd280
[63771.486572] ffff880009463b38 ffff880009464000 ffff88021f516640
7fffffffffffffff
[63771.486573] ffff8800d7fd1f28 0000000000000000 ffff880009463b78
ffffffff817edc37
[63771.486575] Call Trace:
[63771.486581] [<ffffffff817edc37>] schedule+0x37/0x80
[63771.486583] [<ffffffff817f0cd9>] schedule_timeout+0x189/0x250
[63771.486585] [<ffffffff817f1a37>] ? _raw_spin_lock_irqsave+0x37/0x40
[63771.486587] [<ffffffff8101dcc9>] ? read_tsc+0x9/0x10
[63771.486589] [<ffffffff817ed244>] io_schedule_timeout+0xa4/0x110
[63771.486599] [<ffffffffc01c2924>] __i915_wait_request+0x404/0x540 [i915]
[63771.486602] [<ffffffff810bd760>] ? wake_atomic_t_function+0x60/0x60
[63771.486604] [<ffffffff8101f896>] ? __switch_to_xtra+0x166/0x1b0
[63771.486615] [<ffffffffc02046ef>] intel_mmio_flip_work_func+0x4f/0x3c0 [i915]
[63771.486619] [<ffffffff810947ba>] process_one_work+0x1aa/0x440
[63771.486620] [<ffffffff81094a9b>] worker_thread+0x4b/0x4c0
[63771.486622] [<ffffffff81094a50>] ? process_one_work+0x440/0x440
[63771.486624] [<ffffffff81094a50>] ? process_one_work+0x440/0x440
[63771.486626] [<ffffffff8109ae38>] kthread+0xd8/0xf0
[63771.486627] [<ffffffff8109ad60>] ? kthread_create_on_node+0x1f0/0x1f0
[63771.486629] [<ffffffff817f209f>] ret_from_fork+0x3f/0x70
[63771.486631] [<ffffffff8109ad60>] ? kthread_create_on_node+0x1f0/0x1f0
[63891.583348] INFO: task kworker/2:1:17383 blocked for more than 120 seconds.
[63891.583351] Tainted: P W OE 4.2.0-27-generic #32-Ubuntu
[63891.583352] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this
message.
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https://bugs.launchpad.net/bugs/1454961
Title:
dmesg: drm/i915: Resetting chip after gpu hang
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