Re: swsusp hangs on headless resume-from-ram

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Rafael J. Wysocki wrote:
> On Friday 28 July 2006 16:23, Rafael J. Wysocki wrote:
> > On Friday 28 July 2006 15:58, Al Boldi wrote:
> > > Rafael J. Wysocki wrote:
> > > > On Wednesday 26 July 2006 23:34, Al Boldi wrote:
> > > > > Rafael J. Wysocki wrote:
> > > > > > On Wednesday 26 July 2006 21:06, Al Boldi wrote:
> > > > > > > swsusp is really great, most of the time.  But sometimes it
> > > > > > > hangs after coming out of STR.  I suspect it's got something
> > > > > > > to do with display access, as this problem seems hw related. 
> > > > > > > So I removed the display card, and it positively does not
> > > > > > > resume from ram on 2.6.16+.
> > > > > > >
> > > > > > > Any easy fix for this?
> > > > > >
> > > > > > I have one idea, but you'll need a patch to test.  I'll try to
> > > > > > prepare it tomorrow.
> > > > > >
> > > > > > I guess your box is an i386?
> > > > >
> > > > > That should be assumed by default :)
> > > >
> > > > I had hoped I would be able to test it somewhere, but I couldn't.  I
> > > > hope it will compile. :-)
> > > >
> > > > If it does, please send me the output of dmesg after a fresh boot.
> > >
> > > See attached.  patched against 2.6.17.
> >
> > Well, the nosave ranges are the same in both cases, so it doesn't look
> > very promising.
> >
> > Have you tried to suspend with the patch applied?
>
> Ouch, sorry, it won't work.  It will have a chance to work with the
> appended patch applied.
>
> However, I've just noticed you said it didn't resume from RAM and these
> two patches could only fix the resume from disk. ;-)

Actually, I'm using suspend-to-disk to work around this STR problem, and STD 
seems to work fine.  It's STR that sometimes hangs after resuming.

> As far as the
> resume from RAM is concerned, I can only advise you to use a
> newest possible kernel and see if the problem is still there.

Have there been patches that address this issue?

Thanks!

--
Al

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