Hard freezes of ThinkPad T41p (ATI Mobility FireGL T2)

[Alex Deucher]

On Jan 30, 2008 6:22 AM, Valentin Schwamberger <v.schwamberger at gmx.de> wrote:
> Alex Deucher wrote on 28.01.2008 00:34:
>
> > On Jan 26, 2008 8:48 PM, Valentin Schwamberger <v.schwamberger at gmx.de> wrote:
> >> Hi,
> >>
> >> whatever we have already tried yet, my T41p keeps to hard freeze (no
> >> sysrqs, network, serial connection). So far we have tried an endless
> >> number of xorg.conf options, several linux kernel versions, kernel
> >> options, etc.
> >>
> >> As you can see from the subject it's an T41p with an ATI Mobility FireGL
> >> T2 video card. The special setup, however, is the usage of a port
> >> replicator (IBM portreplicator II) and its DVI output. As far as I can
> >> tell, the system seems to run stable when I only use the local flat
> >> panel (not absolutely sure, though). I also don't use it much, but it
> >> also seems to be stable in windows.
> >> Now the funny part is it sometime works stable for hours (once the
> >> desktop was properly started it runs forever). But very often after
> >> system start up, either the display doesn't come up and stays black (I
> >> then have to switch to console and back to X and then it suddenly
> >> works). This problem does more often happen, when the LID is closed.
> >> The worst problems are the hard freezes, X is already started, login to
> >> gdm was successful and the desktop is started, mostly at the end of
> >> gnome initialization the hard freeze occurs.
> >> The hardfreezes also happen on switching outputs with xrandr between
> >> LVDS and DVI or after suspend to ram or on switching to the console
> >> (required due to the other problem above).
> >
> > Remove all of the options you've tried in your current config.  Do any
> > of these options help?
> >
> > 1. Turn off dynamicclocks.  just remove the option.  It's off by
> > default.  you'll have to reboot after changing this.
> >
> > 2. Option "BusType" "PCI"
> >
> > 3. Option "AGPMode" "4"
> >
> > 4. Option "DRI" "False"
> >
> >
> > Alex
>
> Thanks a lot for your answer! I have tested all the options (and
> different combinations too), but none of them seem to solve the problem.
> The freezes still persist, especially when changing from console to X
> and vice versa, but also when Gnome's desktop comes up. I tested with
> git version from late December and with current git. This happens on
> ubuntu 7.10.
>
> Any more suggestions? How can we debug this further?

Can you get a log from one of the locked up sessions?

Alex