> I've had MANY X related issues today since a recent package update on
Jaunty

Can you tell which package update led to the problem?  View your
/var/log/dpkg.log to see exactly what changed (e.g. grep upgrade
/var/log/dpkg.log).  I would probably guess it is xserver-xorg-video-
intel 2:2.6.3-0ubuntu2, but there's been other X updates recently as
well.

See if downgrading the suspected package(s) makes the issue go away.
Usually the older debs are still available in your
/var/cache/apt/archives/ for some time.

"WARNING: gdm_slave_xioerror_handler: Fatal X error" means X has either
crashed or terminated.  From your Xorg log I do not see a backtrace,
which is typically printed out on crashes.  Termination error messages
typically get printed to a log file in /var/log/gdm/.  Can you see if
that is the case, and if so attach an example gdm log with the error?

Alternatively, shut down gdm and run X via `startx` from the console,
and after getting it to terminate again, see what gets printed out to
stderr.

The errors about vblank counts I believe are innocuous warnings.

This message is curious, one I've not seen before, and appears right
before the gdm X termination message:

Mar 19 22:41:51 laptop x-session-manager[10605]: WARNING: Detected that
screensaver has left the bus

That makes it sounds like screensaver stuff is somehow associated in the
vt switching?  Odd.

While I think this is a termination, if it is an X crash, we would next
need a backtrace.  Directions for getting one are at
http://wiki.ubuntu.com/X/Backtracing - this won't help if X is
terminating though.

Finally, thanks for including the lspci output.  What I actually need is
'lspci -vvnn | grep -A1 "VGA "' as that will provide the PCI ID numbers
for the video card.

** Changed in: xorg (Ubuntu Jaunty)
   Importance: Critical => High
       Status: Confirmed => Incomplete

-- 
[Mobile 4 IGC] X exits when switching ttys on 2.6.3
https://bugs.launchpad.net/bugs/345714
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