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

[Yioryos Asprobounitis]

Ok.
Also to point out that when it goes to sleep, regardless of dim or blank, will drop the wifi connections. However, getting out of sleep will eventually (in about a minute) reconnect.
So SLEPP is equivalent to suspend, disregarding DCON/screen state.


--- On Mon, 3/29/10, 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: Monday, March 29, 2010, 4:43 PM
> 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
>