xorg freezes ("EQ overflowing") on a Lenovo T420s since the recent kernel update

[Francois Fleuret <francois.fleuret@idiap.ch>]

Dear all,

For one week or so, I get some freezings of xorg. It happens if I boot
with the current kernel 3.2.0-0.bpo.4-amd64 and not with
3.2.0-0.bpo.3-amd64. It seems that the bug appeared with the update

linux-image-3.2.0-0.bpo.4-amd64 3.2.35-2~bpo60+1 -> 3.2.39-2~bpo60+1

My machine is a T420s Lenovo (Type 4176-A13), with a nVidia Quadro
that I do not use (it is switched off, hence the weird rev value in
lspci.out). I use only the integrated Intel graphic card.

I attach the xorg log, the result of lspci, and the script I use to
switch off the nVidia card (maybe that is part of the problem?)

Cheers,

-- 
Francois Fleuret                         http://www.idiap.ch/~fleuret/

Attachment: Xorg.0.log.old
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Attachment: lspci.out
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Attachment: optimus.sh
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