Bug#234556: xlibs random crashes with an ATI Rage Mobility
On Tue, 2004-02-24 at 17:12, Michel Dänzer wrote:
> On Tue, 2004-02-24 at 16:35, Emmanuel Fleury wrote:
> >
> > In matter of fact I have a transmeta Crusoe in my laptop. But, I'm
> > really in doubt that the on-the-fly optimizer can produce bad code that
> > get stuck in the memory.
> >
> > It seems that the error occur at boot time.
>
> Can you elaborate on this? Doesn't it only start a while after bootup?
Yes sure.
In my very specific case, I noticed this bug because at boot time the
desktop refuse to run.
In fact, I have installed GDM and I am opening the X server directly on
my account in graphical mode (I know it's bad). So, at boot time the
sequence should be: X server --> GDM --> Desktop (Gnome2)
But, this bug (when it occurs) seems to stop the process always at the
exact same point which is when starting the Desktop (gnome-panel and so
on). At this point, the mouse pointer is still active and the X server
as well (I can only move the mouse, not really useful indeed).
If I stop the X server and try to restart, I can't. I get the exact same
error than for the gnome-panel but for the X server (I guess, I have to
investigate this a little bit more now that I better know what is going
on).
My point is that it seems to be extremely consistant when it occurs. So,
I think that there is some determinism inside this bug since it started.
The theory of the "wrong code" being remanent in the processor does not
really satisfy me because we have no real evidence of it (how could we
dump the registers of the processor or the cache memory ?).
The problem is that I do not exactly understand everything and I have to
investigate a lot before reporting.
I'll try to do some investigations and I'll probably come back with a
summary of my though. I guess that I have to add this to the follow-up
to the bug #216933 as it was the first.
It seems to be a very interesting bug. And, actually it crash my X about
one time out of three boots, so I would be very happy to get rid of it.
Regards
--
Emmanuel Fleury
Computer Science Department, | Office: B1-201
Aalborg University, | Phone: +45 96 35 72 23
Fredriks Bajersvej 7E, | Fax: +45 98 15 98 89
9220 Aalborg East, Denmark | Email: fleury@cs.auc.dk
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