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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [APL] [BAT] kms_cursor_legacy some subtest causes [i915]] *ERROR* Potential atomic update failure on pipe"
href="https://bugs.freedesktop.org/show_bug.cgi?id=96701#c18">Comment # 18</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [APL] [BAT] kms_cursor_legacy some subtest causes [i915]] *ERROR* Potential atomic update failure on pipe"
href="https://bugs.freedesktop.org/show_bug.cgi?id=96701">bug 96701</a>
from <span class="vcard"><a class="email" href="mailto:imre.deak@intel.com" title="Imre Deak <imre.deak@intel.com>"> <span class="fn">Imre Deak</span></a>
</span></b>
<pre>(In reply to cprigent from <a href="show_bug.cgi?id=96701#c17">comment #17</a>)
<span class="quote">> I just tried with the IGT patch applied. Test is Pass but I see the error in
> kernel logs.</span >
Thanks. I think the two issues are separate, so we'd need separate bugs for
them.
<span class="quote">>
> Kernel nightly 2fe098f 4.7.0-rc7 from <a href="https://cgit.freedesktop.org/drm-intel/">https://cgit.freedesktop.org/drm-intel/</a>
> commit 2fe098ff21273583acc9c232ec120675de9cd811
> Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
> Date: Fri Jul 15 20:42:25 2016 +0100
> drm-intel-nightly: 2016y-07m-15d-19h-42m-01s UTC integration manifest
>
> root@BXTP6:~/intel-gpu-tools/tests# cat /proc/cmdline
> vmlinuz root=UUID=a9394a0f-0785-42fb-b164-d080a278295d initrd=/initrd
> initcall_debug drm.debug=0xe log_buf_len=10M
>
> root@BXTP6:~/intel-gpu-tools/tests# ./kms_cursor_legacy --r
> basic-cursor-vs-flip
> IGT-Version: 1.15-ge7ed4ef (x86_64) (Linux: 4.7.0-rc7-nightly+ x86_64)
> Test requirement not met in function __real_main472, file
> kms_cursor_legacy.c:493:
> Test requirement: !(n >= data.resources->count_crtcs)
> Subtest basic-cursor-vs-flip: SUCCESS (1,902s)
>
> root@BXTP6:~/intel-gpu-tools/tests# dmesg |grep atomic
> [ 2.258842] [drm:intel_modeset_checks] New cdclk calculated to be atomic
> 288000, actual 288000
> [ 2.346907] [drm:intel_modeset_checks] New cdclk calculated to be atomic
> 288000, actual 288000
> [ 43.255319] [drm:intel_modeset_checks] New cdclk calculated to be atomic
> 288000, actual 288000
> [ 43.621526] [drm:intel_pipe_update_start [i915]] *ERROR* Potential atomic
> update failure on pipe A
> [ 43.631383] [drm:intel_pipe_update_start [i915]] *ERROR* Potential atomic
> update failure on pipe A
> [ 43.641246] [drm:intel_pipe_update_start [i915]] *ERROR* Potential atomic
> update failure on pipe A
> [ 43.651095] [drm:intel_pipe_update_start [i915]] *ERROR* Potential atomic
> update failure on pipe A
> [ 43.660955] [drm:intel_pipe_update_start [i915]] *ERROR* Potential atomic
> update failure on pipe A
> [ 43.670808] [drm:intel_pipe_update_start [i915]] *ERROR* Potential atomic
> update failure on pipe A
> [ 43.680669] [drm:intel_pipe_update_start [i915]] *ERROR* Potential atomic
> update failure on pipe A
> [ 43.690521] [drm:intel_pipe_update_start [i915]] *ERROR* Potential atomic
> update failure on pipe A
> [ 43.700384] [drm:intel_pipe_update_start [i915]] *ERROR* Potential atomic
> update failure on pipe A
> [ 43.710235] [drm:intel_pipe_update_start [i915]] *ERROR* Potential atomic
> update failure on pipe A
> [ 43.714559] [drm:intel_modeset_checks] New cdclk calculated to be atomic
> 288000, actual 288000
> [ 43.719642] [drm:intel_modeset_checks] New cdclk calculated to be atomic
> 288000, actual 288000</span ></pre>
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