[Bug 74102] [ILK/SNB/IVB]igt/testdisplay causes *ERROR* Pipe A FIFO underrun

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=74102

--- Comment #27 from Mikhail Morfikov <morfikov at gmail.com> ---
I've just updated the kernel:

$ uname -a
Linux morfikownia 4.6.0-1-amd64 #1 SMP Debian 4.6.1-1 (2016-06-06) x86_64
GNU/Linux

The issue isn't fixed. I still get the error in question. After waking from
hibernation I can see the following messages:

Jun 10 07:13:20 morfikownia kernel: [drm:ironlake_irq_handler [i915]] *ERROR*
CPU pipe A FIFO underrun
Jun 10 07:13:20 morfikownia kernel: [drm:ironlake_irq_handler [i915]] *ERROR*
PCH transcoder A FIFO underrun
Jun 10 07:13:21 morfikownia kernel: [drm] stuck on bsd ring
Jun 10 07:13:21 morfikownia kernel: [drm] GPU HANG: ecode 5:2:0x01000000,
reason: Ring hung, action: reset
Jun 10 07:13:21 morfikownia kernel: [drm] GPU hangs can indicate a bug anywhere
in the entire gfx stack, including userspace.
Jun 10 07:13:21 morfikownia kernel: [drm] Please file a _new_ bug report on
bugs.freedesktop.org against DRI -> DRM/Intel
Jun 10 07:13:21 morfikownia kernel: [drm] drm/i915 developers can then reassign
to the right component if it's not a kernel issue.
Jun 10 07:13:21 morfikownia kernel: [drm] The gpu crash dump is required to
analyze gpu hangs, so please always attach it.
Jun 10 07:13:21 morfikownia kernel: [drm] GPU crash dump saved to
/sys/class/drm/card0/error
Jun 10 07:13:21 morfikownia kernel: drm/i915: Resetting chip after gpu hang

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