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[MoLE <moleonthehill@xxxxxxxxx>]

Public bug reported:

Binary package hint: xserver-xorg-video-nouveau

Booting from a fresh 10.04 Desktop i386 cd.  System comes up normally until a the mouse is hovered over an icon (eg: firefox or help default icon) and a tooltip is generated.  The system then locks up.  Unable to start a virtual terminal with ctrl-alt-f1-6.
System responds to alt-sysreq-REISUB and can reboot.

After following the suggestions on the troubleshooting portion of the
wiki the logs seem to fill up with this stuff:
(https://wiki.ubuntu.com/X/Troubleshooting/Freeze#Problem:%20%20Log%20shows%20%22[mi]%20EQ%20overflowing%22%20and%20X%20freezes)

Adding nouveau.noaccel=1 as a kernel boot parameter results in a
successful boot and I am unable to reproduce the freeze.

Expected behaviour: Desktop doesn't freeze when hovering mouse pointer over icon when using nouveau driver in accelerated mode.
Actual behaviour: Desktop freezes when hovering mouse pointer over icon when using nouveau driver in accelerated mode.

[snippet from xorg.0.log]
(--) PCI:*(0:1:0:0) 10de:002d:0000:0000 nVidia Corporation NV5M64 [RIVA TNT2 Model 64/Model 64 Pro] rev 21, Mem @ 0xe6000000/16777216, 0xe4000000/33554432, BIOS @ 0x????????/65536

** Affects: xserver-xorg-video-nouveau (Ubuntu)
     Importance: Undecided
         Status: New

-- 
[lucid] TNT2 m64 (NV5M64) freezes on desktop tooltip activation with final liveCD
https://bugs.launchpad.net/bugs/577314
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