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Old 01-07-2012, 11:04 PM
Jonathan Nieder
 
Default Bug#649626: iwl3945: Microcode SW error detected. Restarting 0x82000008

found 649626 linux-2.6/2.6.32-5
quit

Agnonchik wrote:

> I used linux-image-2.6.32-trunk-686-bigmem (2.6.32-5).

There goes my theory. (I was hoping this might be a duplicate
of <http://bugs.debian.org/563693>.)

Could you also test the latest 2.6.32.y kernel from squeeze or
squeeze-proposed-updates (that's linux-image-2.6.32-5-686-bigmem
2.6.32-40), to see if squeeze is still affected?

Thanks for the quick feedback.

Regards,
Jonathan



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Old 01-10-2012, 10:21 PM
Jonathan Nieder
 
Default Bug#649626: iwl3945: Microcode SW error detected. Restarting 0x82000008

found 649626 linux-2.6/2.6.32-40
quit

Agnonchik wrote:

> I REPRODUCED exactly the same error in 2.6.32-5-686-bigmem. That's
> what I did:
>
> Added stable-proposed-updates to /etc/apt/sources.list
[...]
> worked fine, except a couple of dkms modules which need kernel
> headers. I tried to install linux-headers-2.6.32-5-686-bigmem but
> fauiled because the package depends on gcc-4.3 which appeared to be
> not installable on my system. I wonder if gcc-4.4 can be accepted
> instead of 4.3?
>
> Nevertheless, the kernel is installed. Though nvidia and virtualbox
> drivers are missed, they are not so important for debugging I think.
>
> I can observe that wi-fi connection is broken with 2 minutes or so
> period. The strange microcode SW error is issued each time.

Drat. Thanks very much for checking.

> I can debug further if it makes any sense for the community.

A few directions for that:

- What version of the firmware-iwlwifi package do you have installed?
Is the behavior any different if you update it?

- If you have time for it, please try some kernels halfway between
from the list at [1] so we can discover which one introduced the
fix.

If a 3.0-rc2 or newer kernel reproduces the problem, a log would
also be helpful, since the output for microcode errors was improved.

- You said you are only able to reproduce this with network-manager
and not ifupdown. Can you reproduce it using iw and iproute by hand,
like this?

/etc/init.d/NetworkManager stop
ip link set wlan0 up
iw dev wlan0 connect -w <SSID> key d:0:<key>
dhclient wlan0

This would help us get help from upstream.

Thanks,
Jonathan

[1] http://snapshot.debian.org/package/linux-2.6/



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