[Bug 90892] [skl] suspend/resume time from suspend-to-freeze/mem is high for i915

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90892

Humberto Israel Perez Rodriguez <humberto.i.perez.rodriguez at intel.com> changed:

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

--- Comment #5 from Humberto Israel Perez Rodriguez <humberto.i.perez.rodriguez at intel.com> ---
(In reply to Jani Nikula from comment #2)
> Please try drm-intel-nightly, add drm.debug=14 module parameter and attach
> dmesg all the way from boot to the suspend/resume cycle. Add log_buf_len=4M
> or similar to capture everything.

Hi Jani, Nikula

I've tested s3 on SKL-Y under the following configuration, attached dmesg.log
with drm.debug=14 and log_buf_len=4M


Kernel : latest drm-intel-testing (4.3.0-rc6-testing)
commit 87074657f22e38163e712ca417e1a398d00096b6
Author: Daniel Vetter <daniel.vetter at ffwll.ch>
Date:   Fri Oct 23 11:56:52 2015 +0200


Software configuration :
--------------------------------
Ubuntu 14.04.03 x86_64
Xserver : 1.17.4  (commit : 2c7fa2a)
libdrm : 2.4.65 (commit :c349616)
Xf86-video-intel : 2.99.917 (commit : baec802)
Mesa : 11.0.4 (commit : 31bf247)
Libva : 1.6.1 (commit : 613eb96)
Intel-driver : 1.6.1 (commit : 35858c6)
Cairo : 1.14.4 (commit : 0317ee7)


 --- Hardware information ---
CPU information : Intel(R) Core(TM) m5-6Y57 CPU @ 1.10GHz
GPU Card : Intel Corporation Device 191e (rev 07) (prog-if 00 [VGA controller])
Bios : 102.0
KSC  : 1.15
Memory ram : 4 GB

this is part of dmesg

[   92.760478] call 0000:00:02.0+ returned 0 after 262133 usecs
[   93.788900] call 0000:00:02.0+ returned 0 after 999283 usecs
[   93.796837] call 0000:00:02.0+ returned 0 after 0 usecs
[   94.090103] call 0000:00:02.0+ returned 0 after 14944 usecs
[   94.097125] call 0000:00:02.0+ returned 0 after 2789 usecs
[   94.413966] call 0000:00:02.0+ returned 0 after 267411 usecs
[  126.657504] call 0000:00:02.0+ returned 0 after 269764 usecs
[  127.721857] call 0000:00:02.0+ returned 0 after 998288 usecs
[  127.728879] call 0000:00:02.0+ returned 0 after 0 usecs
[  128.027012] call 0000:00:02.0+ returned 0 after 13414 usecs
[  128.033913] call 0000:00:02.0+ returned 0 after 2743 usecs
[  128.328738] call 0000:00:02.0+ returned 0 after 245876 usecs
[  235.339245] call 0000:00:02.0+ returned 0 after 282050 usecs
[  236.411420] call 0000:00:02.0+ returned 0 after 997115 usecs
[  236.418517] call 0000:00:02.0+ returned 0 after 0 usecs
[  236.700661] call 0000:00:02.0+ returned 0 after 14283 usecs
[  236.707655] call 0000:00:02.0+ returned 0 after 2778 usecs
[  237.002294] call 0000:00:02.0+ returned 0 after 247000 usecs
[  638.176926] call 0000:00:02.0+ returned 0 after 270062 usecs
[  639.205327] call 0000:00:02.0+ returned 0 after 1000015 usecs
[  639.211750] call 0000:00:02.0+ returned 0 after 0 usecs
[  639.490584] call 0000:00:02.0+ returned 0 after 14984 usecs
[  639.491842] call 0000:00:02.0+ returned 0 after 984 usecs
[  639.800207] call 0000:00:02.0+ returned 0 after 258558 usecs
[   92.760669] PM: suspend of devices complete after 275.643 msecs
[  126.657570] PM: suspend of devices complete after 283.799 msecs
[  235.339370] PM: suspend of devices complete after 296.023 msecs
[  638.177062] PM: suspend of devices complete after 283.487 msecs

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