Bug 22886

Summary:	[GM965/KMS/UXA] memory corruption on resume from hibernate
Product:	xorg	Reporter:	Evgeni Golov <evgeni>
Component:	Driver/intel	Assignee:	ykzhao <yakui.zhao>
Status:	RESOLVED NOTOURBUG	QA Contact:	Xorg Project Team <xorg-team>
Severity:	normal
Priority:	medium
Version:	7.4 (2008.09)
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:

Description Evgeni Golov 2009-07-22 00:37:19 UTC

Hi,

I have a ThinkPad X300 here, with a GM965 inside. Running kernel 2.6.30.1 (and 2.6.31-rc3), xf86-video-intel 2.8.0, xorg 1.6.2. Ah, and its all x86_64 here, Debian Sid.

When I have KMS enabled, about 50% of my resumes from hibernate (disk) end up absolutely fubar: X is there, I can move the mouse, type, the running apps run fine, but new ones segfault right after the start (or die with an assertion error).

As soon I disable KMS, I can't reproduce this behaviour anymore.

Not sure this really belongs to xorg/intel, and not to drm/intel or kernel/intel, but I hope there is someone who can push me in the right direction (esp wrt getting useful debug information here).

Comment 1 Evgeni Golov 2009-07-22 01:06:35 UTC

After some more testing, it looks more like a kernel issue here.
Previously I suspended with "pm-suspend" which uses uswsusp if its there, and plain old kernel suspend if its not. I tried both with the same results, but both from X.

Now I disabled X, rebooted, and just did a plain
echo disk > /sys/power/state
and got the very same segfaults after resume.

Comment 2 ykzhao 2009-07-22 02:19:36 UTC

Hi, Evgeni
    Thanks for the test.
    From the description it seems that this is a kernel bug rather than intel graphics bug.
    Will you please open a new bug in kernel bugzilla?
    Thanks.

Comment 3 ykzhao 2009-07-22 02:21:44 UTC

As this is a kernel bug rather than intel graphics driver bug, this bug will be rejected and marked as "NOTOURBUG".
Thanks.

Comment 4 ccc1 2010-03-11 02:27:19 UTC

(In reply to comment #2)
>Will you please open a new bug in kernel bugzilla?
>Thanks.
hi ykzhao,
can you have a look at the bug that was assigned to you at the kernel bug tracker[1]? the  bug is open for six months and the issue still persist!

cheers

[1]http://bugzilla.kernel.org/show_bug.cgi?id=13811

Comment 5 ykzhao 2010-03-11 17:38:39 UTC

(In reply to comment #4)
> (In reply to comment #2)
> >Will you please open a new bug in kernel bugzilla?
> >Thanks.
> hi ykzhao,
> can you have a look at the bug that was assigned to you at the kernel bug
> tracker[1]? the  bug is open for six months and the issue still persist!
> 
> cheers
> 
> [1]http://bugzilla.kernel.org/show_bug.cgi?id=13811

Sorry for the late response. I will look at this issue in bug13811.

Thanks for the reminder.

>

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