[ltp] APM suspend hangs on T21 (10% of the time)

[D. Sen]

Markus Alt wrote:

> "D. Sen" wrote:
> >
> > Approximately every once in ten times, my T21 hangs while trying to
> > suspend the machine (using apm -s) requiring a cold-reboot.
> >
> > There doesnt seem to be any pattern to it (it can happen the second time
> > I try to suspend or the 8th time). The only constant feature is that the
> > screen freezes with a diagonal pattern akin to a desynched display.
> > I dont hear the hard-disk so I suspect its a problem with the graphics
> > driver/chipset but I have no certain proof that it is.
> >
> > Does anyone else see the same problem on their T21s? My model is the one
> > that came with the SXGA+ (1400x1050) resolution (with the Savage IX
> > chipset)
>
> You use a framebuffer text console, right? This is my guess as I do use
> it and also get this strange diagonal distorted pattern when switching
> from X (i.e. vt07) to a text console (e.g. vt01) with either
> <Ctrl><Alt><F1> or "chvt 1". Sometimes switching back to vt07 crashes my
> X server! :-(
>

Yes!

>
> But I never had problems with suspend/hibernate and resume so far. And I
> use hibernation every day when carrying the machine home from the
> office. Might be slightly different than suspend, but w/ regard to X, it
> shouldn't matter, I think.
>

Well Markus, I also know that the ShadowStatus bug doesnt affect your machine
whereas it affects mine. So there might be a correlation there.....

>
> So: Sorry, no great help - just cold comfort regarding the pattern issue

Thanks. I think it has helped. Both Friedman and I are affected by the
ShadowStatus bug and both suffer apm problems. So there might indeed be a
pattern there.

>
> ...
>
> Markus
>
> --
> Markus Alt
> IBM Lab Boeblingen, Germany
> altmark@de.ibm.com
>
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--
D. Sen, Room E167
AT&T Labs-Research
Shannon Laboratory
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