(fwd) Re: powerd on XO-1 (was Re: New release ... OS13 )

[Paul Fox]

hi yioryos --

thanks for the detailed descriptions.

debugging and drawing conclusions about suspend/resume
problems is pretty hard without a serial connection.  i'll
try and stress an OS13 a little more, and see if i can't
reproduce your symptoms.  others with serial ports are
welcome/encouraged to try as well.  ;-)

paul

yioryos wrote:
 > 
 > Well, my predicament with powerd and a proper ticket filling
 > is that I can get no logs.  So I'll describe the story instead
 > ...:-)
 > 
 > Test settings SLEEP=15 DIM=30 BLANK=45 running on battery. 
 > os13 (clean).  XO-1 CL1 Firmware q2e42d(not overclocked, no
 > SDcard or anything attached to it)
 > 
 > Without trace-on the XO will sleep and will _not_ dim or
 > blank.  On slight touchpad touch after the timeouts (or
 > spontaneous if you let it long enough) will wake to dim and
 > then blank.  Power button wakes it up fine but no trace log.

okay -- this is definitely a kernel issue then.  i think i thought
we'd gotten past all the bad ones, but i guess not.

 > 
 > With trace-on, same behavior but on slight touch of the
 > touchpad (or spontaneously) will wake to dim and freeze there. 
 > After hard reboot no trace log either :( and no I do not have
 > a serial port adapter) It's a clue though (I hope)

hard freezes are certainly harder to diagnose.

 > 
 > If while at sleep, pass dim or blank time points, you wake it
 > up by typing or rubbing the touchpad constantly, will wake,
 > dim and then recover to normal operation.  This is where the
 > attached powerd.trace is coming from.
 > 
 > It would appear that the kernel configuration is also
 > relevant.  With the os13 kernel I also got a freeze without
 > the trace-on (1 in 5 tests).  With the 2010322 kernel never
 > (in 6 tests).  Using one of my kernels patched for Aufs and
 > with hfsplus, sisusbvga modules and in-kernel loop enabled, I
 > can not get it to sleep unless both DIM and BLANK are before
 > SLEEP time (I could provide config diffs and trace logs if you
 > think it may help the issue at hand)

 > 
 > > 
 > > paul
 > > 
 > > 
 > >  > in DIM=180, BLANK=480, SLEEP=600.  No huge power
 > > savings but
 > >  > at least the build is usable.
 > >  >   
 > >  > 
 > >  > --- On Sat, 3/27/10, Paul Fox <pgf at laptop.org>
 > > wrote:
 > >  > 
 > >  > > From: Paul Fox <pgf at laptop.org>
 > >  > > Subject: Re: (fwd) Re: powerd on XO-1 (was Re:
 > > New release ... OS13 )
 > >  > > To: "Yioryos Asprobounitis" <mavrothal at yahoo.com>
 > >  > > Cc: "OLPC Devel" <devel at lists.laptop.org>,
 > > "fedora-olpc-list" 
 > >  > <fedora-olpc-list at redhat.com>
 > >  > > Date: Saturday, March 27, 2010, 1:26 PM
 > >  > > yioryos wrote:
 > >  > >  > I guess the question is: is os13
 > > usable at this
 > >  > > stage?
 > >  > >  > Should power management be be
 > > inactivated in the
 > >  > > control panel?
 > >  > >  > Are there appropriate/recommended
 > > powerd.conf
 > >  > > settings for the XO-1 at this 
 > >  > >  > stage?
 > >  > > 
 > >  > > maybe, i don't know, and i don't know.
 > >  > > 
 > >  > > paul
 > >  > > =---------------------
 > >  > >  paul fox, pgf at laptop.org
 > >  > > 
 > >  > 
 > >  > 
 > >  >       
 > > 
 > > =---------------------
 > >  paul fox, pgf at laptop.org
 > >
 > 
 > 
 > 

=---------------------
 paul fox, pgf at laptop.org