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[Bug 892677] [NEW] X server freeze

To: ubuntu-x-swat@xxxxxxxxxxxxxxxxxxx
From: Launchpad Bug Tracker <892677@xxxxxxxxxxxxxxxxxx>
Date: Sun, 20 Nov 2011 16:58:09 -0000
Reply-to: Bug 892677 <892677@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

You have been subscribed to a public bug:

I'm getting X freezes that matches the description of the problem listed
here: https://wiki.ubuntu.com/X/Troubleshooting/Freeze on a new ubuntu
11.10 install on a Thinkpad T60. The freeze has happened on several
occasions: a few times while on wifi with libreoffice and firefox open,
other times when the laptop was idle with only firefox running on
ethernet.

dmesg says:

[ 4824.350997] NMI: PCI system error (SERR) for reason a1 on CPU 0.
[ 4824.351003] Dazed and confused, but trying to continue
[ 6277.219752] BUG: unable to handle kernel NULL pointer dereference at   (null)
[ 6277.219760] IP: [<f82278ee>] radeon_read_ring_rptr+0x1e/0x30 [radeon]

Xorg.0.log says:

[  4836.859] [mi] EQ overflowing. The server is probably stuck in an
infinite loop.

dmesg, lspci and Xorg.0.log attached.

** Affects: xorg (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: bot-comment
-- 
X server freeze
https://bugs.launchpad.net/bugs/892677
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