[Bug 104952] [regression] Loss of i915 (Apollo Lake/Broxton) HDMI audio after display sleep v4.14+

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=104952

--- Comment #2 from Simon Casey <simon501098c at gmail.com> ---
My bisect went as follows: (good/bad referring to the commit above it)

aae3dbb4776e7916b6cd442d00159bea27a695c1 4.14-rc1
bad
bf1d6b2c76eda86159519bf5c427b1fa8f51f733
bad
edc2988c548db05e33b921fed15821010bc74895
bad
e5fa05b96b02f45a91a364d2121451a4da05cd84
bad
b9c55b6e2cc4369b0688961fa5de0e057f3ec0c4
bad
9f15a4ab19ab33658dbc9fd37be5210e8c1ac622
good
cdc1cc7e9ac076c9a10eccca76f86697bcf0f7a7
bad
846c6b26d38e56e5004f1d71d4c13226d2514750
good
ca91a2758fcef6635626993557dd51cfbb6dd134
bad
953152253e9cbd4f358d4b4ca56d48072af3846d
bad
6602be0e2c6163bd747d490d8875ef0812c11560
bad
42d9366d41a992631abaa15f5a881ae1235a8203
bad
e8a3a2a3d7f7a194e0f0ad92c5dd636f908e7601
good
42d9366d41a992631abaa15f5a881ae1235a8203 bad


Indeed I got the commit IDs e8a3a2a3d7f7a1 and 42d9366d41a992 the wrong way!
I'll check e8a3a2a3d7f7a1 again to see If I can get it to appear. Most of the
time it happens within two DMPS offs, but testing this morning to get the full
debug dmesg I think I had about 10 error-free sleeps before the I got it to
break for the included log...

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