ubuntu-x-swat team mailing list archive

[Cedders <404331@xxxxxxxxxxxxxxxxxx>]

A little more information in case it gives any clues:

As well as the 3 scenarios above (triggering under identical conditions as far as I can see), there is a fourth after all:
 
d) As a) but the screen blanks.  That is, there is a momentary pause, the screen goes entirely black, but I am able to (say) Ctrl+Alt+F1, llogin and sudo reboot.

So the screen blanking is a random event happening in about 25% of
cases.  Type a) is probably more common than the others.

I'm attaching a drawing of what the might happen to the scrollbar in the
application window when the freeze happens.  There are black horizonal
bars across the scrollbar, with a further few white pixels immediately
below, and sometimes the status line is corrupted.  As I mention, any
screenshot I can produce is corrupted.

If I restart gdm (and/or X) from the console after the freeze, I get the
fade into the greeter background (the brown ubuntu spotlight) but the
login dialogue is not drawn (usually that space is occupied by a faded
version of whatever was on the screen before the gdm restart).  So it's
similar to the situation after the freeze in a) before restarting gdm:
the background is drawn correctly, but any other windows cannot be
written.  I'm pretty sure that if I could change the video mode (to
text, say, and back again), gdm would display correctly.  Is there any
way to do this - resizecons or xvidtune don't seem to help?

If I comment the Option "DRI" "false" workaround (which seemed to work
for lucid), and enable Compiz, visual effects seem to work correctly
until the freeze.  It's fairly easy now to reproduce a freeze: turn
visual effects no normal or high, visit a page like this in Epiphany and
scroll down - I can scroll down a page or two before the freeze.  Also,
when this happens it seems Compiz crashes because the title bars
disappear.

Very little is logged about the problem in Xorg.0.log (I've just added -logverbose to 
/etc/X11/xinit/xserverrc in case that helps.)

Once it's got into this state (a), switching with Ctrl+Alt and back
again to the frozen Xorg gives:

(II) AIGLX: Suspending AIGLX clients for VT switch
[dix] couldn't enable device 9
[dix] couldn't enable device 9
[dix] couldn't enable device 9
[dix] couldn't enable device 9
[dix] couldn't enable device 9
(II) Open ACPI successful (/var/run/acpid.socket)
(II) AIGLX: Resuming AIGLX clients after VT switch

but of course I'm still in the state of having X frozen with only the
cursor working.

-- 
X locks up when scrolling on Radeon Mobility M6 LY
https://bugs.launchpad.net/bugs/404331
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xserver-xorg-video-ati in ubuntu.