Re: base: System freezes at random time after Resume from Suspend (Regression)

[Jonathan Nieder <jrnieder@gmail.com>]

affects 584314 + xserver-xorg-video-intel
quit

Hi,

Thanks again for your work on this bug so far.

To recap, this bug is about symptoms of memory corruption after
suspending to disk on an Acer Aspire 5610, which uses (I think)
the 945GM express chipset.

Lenny and wheezy worked fine; it is only the squeeze kernel that
has this problem.

Searching through kernels from snapshot.debian.org, you found
that it was introduced between 2.6.36 and 2.6.37-rc4.  (Nicely
done.)

Andreas Berger wrote:

> ok, i narrowed it down, but it is:
>
> found:     linux-image-2.6.36-trunk-686, version 2.6.36-1~experimental.1
> not found: linux-image-2.6.37-rc4-686,   version 2.6.37~rc4-1~experimental.1

Unfortunately there are a lot of interesting patches in that range,
so we will probably need a little more data to track this down.  So
I suggested:

 - trying suspend-to-disk (with

	echo disk >/sys/power/state

   ) and seeing if that reproduces the same trouble

 - suspending from single-user mode (kernel params "single debug")
   or from an initramfs shell (kernel param "break=top") to see if
   the same problem occurs even if the i915 driver is not loaded
   yet when the suspend/hibernate happens

Other ideas would be welcome, too.  I'd be happy to get this fixed in
squeeze.

Jonathan