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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Failure to wake monitor after sleep on Haswell graphics driver under 4.4.1"
href="https://bugs.freedesktop.org/show_bug.cgi?id=94014#c8">Comment # 8</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Failure to wake monitor after sleep on Haswell graphics driver under 4.4.1"
href="https://bugs.freedesktop.org/show_bug.cgi?id=94014">bug 94014</a>
from <span class="vcard"><a class="email" href="mailto:da_audiophile@yahoo.com" title="John <da_audiophile@yahoo.com>"> <span class="fn">John</span></a>
</span></b>
<pre>I started to do a git bisect on this. I post the log here. Note that commit
8b417c266b715b3797cd3e65342149372b9ac0c8 does wake up as expected but it also
wakes-up spontaneously and I think my choice of "good" for it was probably bad
in retrospect. I hope this helps narrow it down.
% git bisect log
git bisect start
# good: [6a13feb9c82803e2b815eca72fa7a9f5561d7861] Linux 4.3
git bisect good 6a13feb9c82803e2b815eca72fa7a9f5561d7861
# bad: [afd2ff9b7e1b367172f18ba7f693dfb62bdcb2dc] Linux 4.4
git bisect bad afd2ff9b7e1b367172f18ba7f693dfb62bdcb2dc
# good: [f66477a0aeb77f97a7de5f791700dadc42f3f792] Merge tag
'clk-for-linus-20151104' of
git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
git bisect good f66477a0aeb77f97a7de5f791700dadc42f3f792
# bad: [56e0464980febfa50432a070261579415c72664e] Merge tag 'armsoc-soc' of
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
git bisect bad 56e0464980febfa50432a070261579415c72664e
# good: [22402cd0af685c1a5d067c87db3051db7fff7709] Merge tag 'trace-v4.4' of
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
git bisect good 22402cd0af685c1a5d067c87db3051db7fff7709
# bad: [816d2206f0f9953ca854e4ff1a2749a5cbd62715] Merge tag
'drm-intel-next-fixes-2015-11-06' of git://anongit.freedesktop.org/drm-intel
into drm-next
git bisect bad 816d2206f0f9953ca854e4ff1a2749a5cbd62715
# bad: [26148bd3c0f1fbd8f2b0dae994f3195316f677db] drm/i915/bxt: Set time
interval unit to 0.833us
git bisect bad 26148bd3c0f1fbd8f2b0dae994f3195316f677db
# bad: [7b24c9a696c1c68eaa471a27bf467e97a9986fa9] drm/i915: don't enable FBC
when pixel rate exceeds 95% on HSW/BDW
git bisect bad 7b24c9a696c1c68eaa471a27bf467e97a9986fa9
# bad: [85a62bf9d8ef8d533635270ae985281c58e8c974] drm/i915: Also record time
difference if vblank evasion fails, v2.
git bisect bad 85a62bf9d8ef8d533635270ae985281c58e8c974
# bad: [901c2daf05c8ae6c3f85370fc96b9b6892f5da2d] drm/i915: Put back lane_count
into intel_dp and add link_rate too
git bisect bad 901c2daf05c8ae6c3f85370fc96b9b6892f5da2d
# good: [cf1d58833f07afbb4534b15caa3fd48baa313b2c] drm/i915/bxt: WA for swapped
HPD pins in A stepping
git bisect good cf1d58833f07afbb4534b15caa3fd48baa313b2c
# good: [919f1f55d90b5487a9f38e94842e486509474f09] drm/i915: Expose one LRC
function for GuC submission mode
git bisect good 919f1f55d90b5487a9f38e94842e486509474f09
# good: [8b417c266b715b3797cd3e65342149372b9ac0c8] drm/i915: Debugfs interface
for GuC submission statistics
git bisect good 8b417c266b715b3797cd3e65342149372b9ac0c8
# good: [f1afe24f0e736b9d7f2275e2b1504af3fe612f2a] drm/i915: Change SRM, LRM
instructions to use correct length
git bisect good f1afe24f0e736b9d7f2275e2b1504af3fe612f2a</pre>
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