[Bug 99086] New: [drm:intel_pipe_update_end [i915]] *ERROR* Atomic update failure on pipe A

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99086

            Bug ID: 99086
           Summary: [drm:intel_pipe_update_end [i915]] *ERROR* Atomic
                    update failure on pipe A
           Product: DRI
           Version: DRI git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: cja at gmx.net
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 128474
  --> https://bugs.freedesktop.org/attachment.cgi?id=128474&action=edit
Fix for this bug

On drm-tip e75e28e88de6cf33423337a64ad377116ae2141c i915 now works on my Asus
T100HA - cherry trail.
However, I get some error prints.

--
[  264.110049] [drm:intel_pipe_update_end [i915]] *ERROR* Atomic update failure
on pipe A (start=13947 end=13948) time 14 us, min 1272, max 1279, scanline
start 1280, end 1282
[  974.205415] [drm:intel_pipe_update_end [i915]] *ERROR* Atomic update failure
on pipe A (start=56621 end=56622) time 14 us, min 1272, max 1279, scanline
start 1280, end 1281
[ 1007.285699] [drm:intel_pipe_update_end [i915]] *ERROR* Atomic update failure
on pipe A (start=58609 end=58610) time 12 us, min 1272, max 1279, scanline
start 1280, end 1281
[ 1738.181215] [drm:intel_pipe_update_end [i915]] *ERROR* Atomic update failure
on pipe A (start=102533 end=102534) time 18 us, min 1272, max 1279, scanline
start 1280, end 1282
[ 2140.719325] [drm:intel_pipe_update_end [i915]] *ERROR* Atomic update failure
on pipe A (start=126724 end=126725) time 14 us, min 1272, max 1279, scanline
start 1280, end 1282
[ 2189.495157] perf: interrupt took too long (3161 > 2500), lowering
kernel.perf_event_max_sample_rate to 63000
[ 2215.699125] [drm:intel_pipe_update_end [i915]] *ERROR* Atomic update failure
on pipe A (start=131230 end=131231) time 11 us, min 1272, max 1279, scanline
start 1280, end 1280
[ 2371.366424] [drm:intel_pipe_update_end [i915]] *ERROR* Atomic update failure
on pipe A (start=140585 end=140586) time 16 us, min 1272, max 1279, scanline
start 1280, end 1283
[ 2573.159594] [drm:intel_pipe_update_end [i915]] *ERROR* Atomic update failure
on pipe A (start=152712 end=152713) time 8 us, min 1272, max 1279, scanline
start 1280, end 1280
[ 2584.990646] [drm:intel_pipe_update_end [i915]] *ERROR* Atomic update failure
on pipe A (start=153423 end=153424) time 10 us, min 1272, max 1279, scanline
start 1280, end 1282
[ 2612.613070] [drm:intel_pipe_update_end [i915]] *ERROR* Atomic update failure
on pipe A (start=155083 end=155084) time 12 us, min 1272, max 1279, scanline
start 1280, end 1282
[ 6636.810230] perf: interrupt took too long (3960 > 3951), lowering
kernel.perf_event_max_sample_rate to 50400
[ 7502.095591] [drm:intel_pipe_update_end [i915]] *ERROR* Atomic update failure
on pipe A (start=56156 end=56157) time 13 us, min 1272, max 1279, scanline
start 1280, end 1283
[ 7688.813003] [drm:intel_pipe_update_end [i915]] *ERROR* Atomic update failure
on pipe A (start=67377 end=67378) time 12 us, min 1272, max 1279, scanline
start 1280, end 1280
[ 7826.841908] [drm:intel_pipe_update_end [i915]] *ERROR* Atomic update failure
on pipe A (start=75672 end=75673) time 16 us, min 1272, max 1279, scanline
start 1280, end 1282
[ 7884.332997] [drm:intel_pipe_update_end [i915]] *ERROR* Atomic update failure
on pipe A (start=79127 end=79128) time 13 us, min 1272, max 1279, scanline
start 1280, end 1282
[ 8303.544507] [drm:intel_pipe_update_end [i915]] *ERROR* Atomic update failure
on pipe A (start=104320 end=104321) time 11 us, min 1272, max 1279, scanline
start 1280, end 1280
[ 8304.592885] [drm:intel_pipe_update_end [i915]] *ERROR* Atomic update failure
on pipe A (start=104383 end=104384) time 13 us, min 1272, max 1279, scanline
start 1280, end 1281
[ 8388.040672] perf: interrupt took too long (5142 > 4950), lowering
kernel.perf_event_max_sample_rate to 38700
[ 8891.835131] [drm:intel_pipe_update_end [i915]] *ERROR* Atomic update failure
on pipe A (start=139674 end=139675) time 15 us, min 1272, max 1279, scanline
start 1280, end 1281
[ 8952.404675] [drm:intel_pipe_update_end [i915]] *ERROR* Atomic update failure
on pipe A (start=143314 end=143315) time 14 us, min 1272, max 1279, scanline
start 1280, end 1282
[ 9156.877055] [drm:intel_pipe_update_end [i915]] *ERROR* Atomic update failure
on pipe A (start=155602 end=155603) time 15 us, min 1272, max 1279, scanline
start 1280, end 1283
[ 9172.085946] [drm:intel_pipe_update_end [i915]] *ERROR* Atomic update failure
on pipe A (start=156516 end=156517) time 12 us, min 1272, max 1279, scanline
start 1280, end 1280
--

However, I don't  notice anything.

I first commented posted this issue in bug 97529, where Ville Syrjälä attached
a patch that fixes it. The same patch is attached here as well.

I've had my T100HA running during the day, with a few hours of usage, and the
error prints are gone.

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