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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#c17">Comment # 17</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:christophe.prigent@intel.com" title="cprigent <christophe.prigent@intel.com>"> <span class="fn">cprigent</span></a>
</span></b>
<pre>I just tried with the IGT patch applied. Test is Pass but I see the error in
kernel logs.
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</pre>
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