Re: wl hangs on hibernate

[Matt Price <matt.price@utoronto.ca>]

At Mon, 05 Apr 2010 15:37:14 +0100,
Richard Lewis wrote:
> 
> At Mon, 05 Apr 2010 07:18:34 -0400,
> Matt Price wrote:
> > 
> > I'm encountering a very frustrating bug with wl: when I put my laptop
> > to sleep (usually using the hibernate script & tuxonice to do a 'dual'
> > suspend, to both ram and disk), emacs is unresponsive on wakeup.  If I
> > remember to quite wl before initiating the suspend, I never see this,
> > so I'm pretty sure that wl is the culprit.  I imagine it's something to
> > do with polling imap or similar process which in another mailer would
> > be running in the background; but of course emacs is
> > single-threaded...  
> > 
> > so my two questions are:  
> > - is anyone else seeing similar behaviour; and
> > - any ideas on how to diagnose and prevent this?  
> > 
> FWIW, I'm *not* experiencing this. I suspend using powersaved:
> 
> $ sudo powersave --suspend-to-disk
> 
> which (according to man powersave) "Sends a hibernate (suspend to
> disk) request to HAL". I'd always assumed that it uses swsusp but it
> turns out I don't have the uswsusp package installed.
> 
uswsusp and swsusp are actually different things -- swsusp is he
in-kernel suspend implementatino, uswsuspis a user-space program that
piggybacks on top of it; but I use the tuxonice patches instead, which
provide functionality similar to uswsusp (esp comprssion, which speeds
everythign up quite a bit) but gives a much greater range
of configuration options.
> Do you get the same problem if you try a different suspend to disk
> technique?

I see the same thing when using pm-utils -- powersaved and HAL are now
deprecated in Ubuntu, I think, so I'd rather not try them at this
point.  But using Erik's emacsclient command (see above I nthis
thread) really helps, so i've written a scriptlet for the hibernate
script that just does this every time I suspend.  it's qutie
convenient actually.

matt

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> Richard Lewis
> ISMS, Computing
> Goldsmiths, University of London
> Tel: +44 (0)20 7078 5134
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> http://www.richard-lewis.me.uk/
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