[Bug 94101] System hangs for seconds repeatedly and sometimes crashes

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94101

--- Comment #15 from frans <gegenstand+bugs.freedesktop.org at gmail.com> ---
For me it does! I'm on 4.5.6-200.fc23.x86_64 now and the machine still hangs
for some seconds every couple of minutes when I re-activate RC6.

Error message in dmesg is:

[95618.288809] [drm] stuck on render ring
[95618.289426] [drm] GPU HANG: ecode 9:0:0x85dfbfff, in gnome-shell [2271],
reason: Ring hung, action: reset
[95618.289841] ------------[ cut here ]------------
[95618.289890] WARNING: CPU: 1 PID: 32114 at
drivers/gpu/drm/i915/intel_display.c:11440
intel_mmio_flip_work_func+0x45f/0x470 [i915]()
...
...
[95618.290176]  [<ffffffff810d7980>] ? kthread_create_on_node+0x250/0x250
[95618.290183]  [<ffffffff818b641f>] ret_from_fork+0x3f/0x70
[95618.290187]  [<ffffffff810d7980>] ? kthread_create_on_node+0x250/0x250
[95618.290192] ---[ end trace 700d22f5ceb77f1b ]---
[95618.291837] drm/i915: Resetting chip after gpu hang
[95620.276896] [drm] RC6 on

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