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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [CI] igt@kms_cursor_legacy@2x-long-flip-vs-cursor-* - fail - Test assertion failure function two_screens_flip_vs_cursor - Failed assertion: vbl.sequence == vblank_start + 1"
href="https://bugs.freedesktop.org/show_bug.cgi?id=104873#c15">Comment # 15</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [CI] igt@kms_cursor_legacy@2x-long-flip-vs-cursor-* - fail - Test assertion failure function two_screens_flip_vs_cursor - Failed assertion: vbl.sequence == vblank_start + 1"
href="https://bugs.freedesktop.org/show_bug.cgi?id=104873">bug 104873</a>
from <span class="vcard"><a class="email" href="mailto:jani.saarinen@intel.com" title="Jani Saarinen <jani.saarinen@intel.com>"> <span class="fn">Jani Saarinen</span></a>
</span></b>
<pre>From Maarten:
We try to make sure that when we do a page flip on a different screen, the
cursor update is still simultaneous. What happens here is that we are probably
too strict and sometimes miss a pageflip and it then takes 2 vblanks. This can
happen in userspace too. I wouldn't say this has a high impact.
It's very likely that disabling all power saving features would result in not
seeing this bug, because a source of random delays is removed.</pre>
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