11.3.1 build 13 released for XO-1.75

Paul Fox pgf at laptop.org
Wed Nov 23 16:00:33 EST 2011


john wrote:
 > 
 > I also ran into the problem that suspends take longer than on
 > earlier OSs.   Frequently a three second wakeup has passed
 > before suspend completes.  Even a six second wakeup hangs
 > occasionally.   I added pgf's code to tell the kernel to abort a
 > suspend if a wakeup event has happened during the
 > suspend operation to my script, and it fixed the problem.
 > 
 > I then ran into the problem that os13 is that it doesn't actually
 > suspend.   This appears to be related to EC code --- if it hasn't
 > updated the EC code it works fine.    Linux thinks it is suspending,
 > but the power light never blinks.   Also seems to relate to having
 > DC power provided.

i think that EC thing may have been a red herring.

it seems that the "pgf's code" you added may be the culprit. (i.e.,
the code from http://dev.laptop.org/ticket/11416#comment:3)  i don't
know what's going on, but if i run, or rerun, your script on a failing
machine, i reliably get errors to the effect of "processes refuse to
freeze after 0.00 seconds" (from memory).  if i run just a single
rtcwake (timeout doesn't matter) _outside_ of your dortc script, that
s/r works, and then i can start your script and it, too, works.  since
powerd will do an rtcwake on its own if you don't kill it soon enough,
some of your "successful" runs may have benefitted from that.

so i have your entire testbed running now, mostly using that trick.  i
did not have to set olpc-ols.0/high_lim to zero.

paul

 > 
 > powerd is too aggressive on suspend, given that USB doesn't
 > work after a resume.   You have to work fast to get something
 > onto the laptop from a USB stick.
 > 
 > Cheers,
 > wad
 > 
 > On Nov 23, 2011, at 2:22 PM, Martin Langhoff wrote:
 > 
 > > 2011/11/23 Gonzalo Odiard <gonzalo at laptop.org>:
 > >> Looks like a collateral effect of loosing date.
 > >> Updated the ticket.
 > >> 
 > >> Gonzalo
 > >> 
 > >> 
 > >> Filled as #11490
 > > 
 > > I'm almost there fixing the RTC problem #11400. Hopefully next build...
 > > 
 > > 
 > > 
 > > m
 > > -- 
 > >  martin.langhoff at gmail.com
 > >  martin at laptop.org -- Software Architect - OLPC
 > >  - ask interesting questions
 > >  - don't get distracted with shiny stuff  - working code first
 > >  - http://wiki.laptop.org/go/User:Martinlanghoff
 > > _______________________________________________
 > > Devel mailing list
 > > Devel at lists.laptop.org
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 > > 
 > 
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=---------------------
 paul fox, pgf at laptop.org


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