Bug 87179 - [NVE7] Warning while reenabling Optimus dedicated card
Summary: [NVE7] Warning while reenabling Optimus dedicated card
Status: RESOLVED FIXED
Alias: None
Product: xorg
Classification: Unclassified
Component: Driver/nouveau (show other bugs)
Version: git
Hardware: Other All
: medium normal
Assignee: Nouveau Project
QA Contact: Xorg Project Team
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2014-12-10 02:55 UTC by Tobias Klausmann
Modified: 2015-10-22 07:47 UTC (History)
0 users

See Also:
i915 platform:
i915 features:

Attachments
kernel 3.18 oops (6.73 KB, text/plain)
2014-12-10 02:55 UTC, Tobias Klausmann 		no flags Details
kernel 3.17 oops (1.93 KB, text/plain)
2014-12-10 02:57 UTC, Tobias Klausmann 		no flags Details
possible fix (3.03 KB, patch)
2014-12-11 00:08 UTC, Ben Skeggs 		no flags Details | Splinter Review
nouveau errors with "110702: possible fix" (5.07 KB, text/plain)
2014-12-11 02:06 UTC, Tobias Klausmann 		no flags Details
View All

Description Tobias Klausmann 2014-12-10 02:55:33 UTC 
Created attachment 110662 [details]
kernel 3.18 oops

Sometimes while waking the dedicated card, the system oopses and gets unresponsive (sometimes this hangs the entire graphics system). 
Steam triggers this very easily somehow...

These hangs plague me for a while now, but this is the first hang i could capture in a whole!

Kernel: 3.18.0, occurred with kernels at least down to 3.16
Comment 1 Tobias Klausmann 2014-12-10 02:57:04 UTC 
Created attachment 110663 [details]
kernel 3.17 oops

I found an additional oops with 3.17 "yay"
Comment 2 Ben Skeggs 2014-12-11 00:08:22 UTC 
Created attachment 110702 [details] [review]
possible fix

Is this issue creproducible for you?  If so, please give the attached patch a try and see if it helps!
Comment 3 Tobias Klausmann 2014-12-11 02:06:44 UTC 
Created attachment 110703 [details]
nouveau errors with "110702: possible fix"

While running with the above patch, several (40+) suspend/resume cycles worked fine. The initial Warning does not seem to get triggered anymore.

Later on the machine hung while resuming, but recovered from the hang. The attached log is from that timeframe. ~2 min later X was hanging, not recovering. Could ssh in, nothing in dmesg.

I'm not sure if this is still the same bug or if i should open yet another one.
Comment 4 Ilia Mirkin 2015-10-22 07:11:39 UTC 
Tobias, does this still happen with recent kernels?
Comment 5 Tobias Klausmann 2015-10-22 07:47:26 UTC 
Haven't seen that one in a while now, i guess we can safely close this now!

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