ubuntu-x-swat team mailing list archive

[Cedders <cedric@xxxxxxxxxx>]

If intrepid was somewhat better, jaunty has been considerably worse,
often freezing up within an hour using Firefox (I think it's
particularly common scrolling immediately after switching into the
Firefox window).  I did have visual effects working for a while, and
there also seemed to be a reliable way to produce a lockup using compiz
'Paint fire on screen' with some high values for particle size and
number.  In the case of intrepid and jaunty, not only does the cursor
become jerky (longer timeout?), and I've not seen the screen corruption,
but the slowdown is gradual over a course of about 2 seconds, as if
whatever resource is getting locked is slowly approaching saturation.
Then a few seconds after that the laptop fan comes on as CPU usage hits
100%.  The difference in jaunty is it seems to happen more readily,
whereas I got the impression in intrepid it sometimes approached this
slowup and halt, but recovered.  There's nothing special in Xorg.log:
the last lines are about monitor detection.

xserver-xorg-video-radeon/jaunty uptodate 1:6.12.1-0ubuntu2
xserver-xorg-video-ati/jaunty uptodate 1:6.12.1-0ubuntu2
xserver-xorg-core/jaunty uptodate 2:1.6.0-0ubuntu14
libgl1-mesa-dri/jaunty-updates uptodate 7.4-0ubuntu3.1
libgl1-mesa-glx/jaunty-updates uptodate 7.4-0ubuntu3.1
libdrm2/jaunty uptodate 2.4.5-0ubuntu4

Nothing similar to this happens on the laptop under Windows XP (although occasionally there is a driver BSOD on boot), so if it's a hardware timing issue, it's one that could be worked around, as a last resort by resetting the card and driver.  Anyway, my current workaround is 
  Option "DRI" "false"

And that seems to be working.  Have I filed this against the wrong
package?

** Attachment added: "backtrace and variables during lockup on jaunty"
   http://launchpadlibrarian.net/29819801/gdb-Xorg21-jaunty.txt

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