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[Cedders <cedric@xxxxxxxxxx>]

Public bug reported:

Binary package hint: xserver-xorg-video-ati

This was a Ubuntu 8.04 fresh install on Viglen Dossier LX.  Every few
hours, apparently randomly, everything freezes apart from the mouse
pointer.  Ctrl-Alt-F1 or Ctrl-Alt-Del does nothing, but I can ping the
laptop.  Typically this occurs when scrolling up or down in Firefox
using touchpad or keyboard, and there is some screen corruption at the
bottom of the scroll bar (as if a blit failed or was interrupted?).

The symptoms aren't quite the same as bug #36596, bug #248438: it does
seem closest to bug #184430 which was attributed to a faulty adapter,
but again doesn't sound identical, nor to (Debian bug) #459428 which
sounded unresolved.  No visual effects, because it claims they are not
available; before the hang I can switch to a console.  I've tried Option
"RenderAccel" "off" and Option "AGPMode" "2" for  "Configured Video
Device" but neither seems to help, nor reducing AGP aperture in BIOS.

Xorg.0.log shows the uninformative:
mieqEnequeue: out-of-order valuator event; dropping.
tossed event which came in late
mieqEnequeue: out-of-order valuator event; dropping.
tossed event which came in late
tossed event which came in late
tossed event which came in late

reported elsewhere.  An strace shows EBUSY errors:
22:30:05 [b7f64410] read(37, "\233\7\2\0E\"\203\2\233\4\5\0F\"\203\2:\"\203\0028\0\0"..., 4096) = 208
22:30:05 [b7f64410] ioctl(7, 0xc0286429, 0xbff07634) = -1 EBUSY (Device or resource busy)

(I'll upload fuller strace and try getting more info via SSH as
described at https://wiki.ubuntu.com/X/Backtracing )

ProblemType: Bug
Architecture: i386
Date: Fri Jul 24 20:03:45 2009
DistroRelease: Ubuntu 8.04
Package: xserver-xorg-video-ati 1:6.8.0-1ubuntu1
PackageArchitecture: i386
ProcEnviron:
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/opt/real/RealPlayer
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: xserver-xorg-video-ati
Uname: Linux 2.6.24-24-generic i686

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


** Tags: apport-bug

-- 
X locks up when scrolling on Radeon Mobility M6 LY
https://bugs.launchpad.net/bugs/404331
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