[Bug 90868] [BYT/BSW Bisected] Suspend Resume time increase to 6000+ ms

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90868

Maarten Lankhorst <bugs at mblankhorst.nl> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |NEEDINFO

--- Comment #10 from Maarten Lankhorst <bugs at mblankhorst.nl> ---
Ah thanks, that's useful.

Doing some analysis on the diff:

intel_display_power_put is called on more domains on the good commit.
This points to a possible bug in power domains.

For the primary plane src and dst seems to indicate why planes stay hidden:
-[drm:intel_dump_pipe_config] scaler:0 src (0, 0) 0x0 dst (0, 0) 0x0
+[drm:intel_dump_pipe_config] scaler:0 src (0, 0) 1920x1080 dst (0, 0)
1920x1080

This shows a bug caused by not having support for atomic planes, it's fixed by
convert to atomic, part 3.

I also see the following, more worrying error:
-[drm:vlv_enable_pll [i915]] *ERROR* DPLL 0 failed to lock

Just in case I already fixed it, could you test with

http://cgit.freedesktop.org/~mlankhorst/linux/log/?h=unify-flip-modeset ?

If it doesn't fit it, post a log with drm.debug=0x1f on that branch please.

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