Public bug reported:

Binary package hint: xorg

I'm not sure where to report this, I think it affects X worst.

OK, I have two laptops here on the table, connected through a LAN. One
has up-to-date Edgy, the other up-to-date Feisty. The Feisty one (which
is where the bug occurs) has a Mobile 945GM/GMS/940GML Express
Integrated Graphics Controller (as reported by hal-device-manager).

On the Feisty I log in (normal Gnome session), I start a terminal, and I
ssh to the other one, forwarding X:

"ssh -X [EMAIL PROTECTED]"

I authenticate myself, and I get a ssh shell to the Edgy machine. I can
run pretty much anything now, and it displays correctly on the Feisty
display. However, if I run glxgears on the Edgy machine, I have two
issues: First (and not very grave), it complains about DRI not working
(normal, I suppose), then it starts running in indirect mode; the window
is correctly displayed on the Feisty screen, but the animation is very
choppy (on the order of 1fps). However, glxgears reports running at
~1000fps (+/-200). I was under the impression that it should look quite
well, too.

Second -- and this is the problem -- if I kill the first glxgears
(ctrl-c) and I run another one again, the X server (on Feisty) displays
a window without any contents (just black), freezes for a bit, and then
either freezes completely or crashes. (Actually, it restarts; I assume
it's because it crashes.) I've done this three times in a row; the first
two times X restarted, the last time it just froze and I rebooted after
a while.

The Edgy machine kept running normally --- I didn't have to restart it
when the Feisty X crashed.

I can do this again and gather whatever debug information you might
need, I'm waiting for instructions. I have a bit of a vague idea of how
X works, but I really don't know where to start diagnosing this issue.

** Affects: xorg (Ubuntu)
     Importance: Undecided
         Status: Unconfirmed

-- 
opengl over remote X (over ssh) crashes X
https://launchpad.net/bugs/83339

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