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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - two external screens permanently go blank on HP EliteBook Folio G1"
href="https://bugs.freedesktop.org/show_bug.cgi?id=108462#c64">Comment # 64</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - two external screens permanently go blank on HP EliteBook Folio G1"
href="https://bugs.freedesktop.org/show_bug.cgi?id=108462">bug 108462</a>
from <span class="vcard"><a class="email" href="mailto:johannes@sipsolutions.net" title="Johannes Berg <johannes@sipsolutions.net>"> <span class="fn">Johannes Berg</span></a>
</span></b>
<pre>I'm almost done doing a long and tiring config bisect now, using Steven's
awesome script tools/testing/ktest/config-bisect.pl ...
But one thing I just noticed, on the drm-tip kernel I got this WARN_ON a lot?
[ 289.339478] WARNING: CPU: 2 PID: 2200 at
drivers/gpu/drm/i915/intel_pm.c:4395 skl_allocate_pipe_ddb+0xa2f/0xb60 [i915]
[ 289.339481] ---[ end trace f63ed9bc71cfc7ae ]---
[ 289.339496] ------------[ cut here ]------------
[ 289.339498] WARN_ON(wm->wm[level].min_ddb_alloc > total[PLANE_CURSOR])
it's possible, however, that this occurred because I set the watermark levels
as per a comment above...</pre>
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