Bug#572134: xserver-xorg-video-intel: i915 945GM gpu crashed after resume

[Mark Borst <mark@borst.org>]

Hi Cyril

Thanks for having a look at my problem. I have installed debug packages. 

I've been trying to reliably reproduce the problem, and it comes down to this:

1. dmesg > dmesg_before; echo mem > /sys/power/state; dmesg > dmesg_after works. No problem whatsoever. This is from http://intellinuxgraphics.org/suspend-resume.html


2. pm-suspend works fine. No problem, not after multiple times. I don't get the gnome lock-screen thingie.

3. close laptop lid. This gives the problem. The first time it's fine, the second time it gives the problem. Always. I don't know what exactly is happening and why this is different. But after closing the lid, I get the gnome lock-screen passwordprompt. It seems gdm is trying to restart X, and that's failing the second time.


A little problem is that I can't ssh into the box when it's 'broken' as network-manager apparantly doesn't work when there is no nm-applet to talk to, like when X isn't there.

So there seems to be a dependency on the way the laptop is suspended, but I don't know how to determine that properly. Do you have any more suggestions?


Thanks,

Mark

On Tue, Mar 2, 2010 at 12:20 AM, Cyril Brulebois <kibi@debian.org> wrote:

Hi Mark,

Mark Borst <mark@borst.org> (01/03/2010):
> After a resume from suspend, the gpu (945GM) often crashes. Earlier
> I got an X screen back, with mouse moving, but no other actions
> possible. Then I could still switch to VT1 and reboot the box. I
> hoped it would be fixed with newer kernels, so I eagerly upgraded
> recently, up till now when I'm running 2.6.33.

thanks for trying this. :)

> However, the problem hasn't stopped.

While this is sad, that's good to know.

If you have a few more minutes, it'd be very nice if you could report
this bug on upstream's bugzilla following instructions at [1], Cc'ing
me, so that I can mark this bug as forwarded there.

 1. http://intellinuxgraphics.org/how_to_report_bug.html

What could be of some help to make sure you're getting almost all
messages: ssh from another box, install the various libdrm*dbg,
*-intel-dbg, -core-dbg, and attach X inside gdb. This might help you
get a backtrace if X is segfaulting and if no other traces of that are
kept.

G'luck.

Mraw,
KiBi.

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