Unexpected sleep on old iBook

Unexpected sleep on old iBook

[Halfmann, Klaus]

Since kernel 2.4.20-rc1 (and possibly some versions before)
my iBook (first generation) goes to sleep when I use pmud.

I fetched the latest pmud I could get (1.1.1.1 2002/12/07 11:31:46 sleemburg)

I use pmud -s (if that matters at all).
I set "lid_wakeup=0" in boot.local via /proc/pmu/options.

The logs do not show any clue why the kernel puts the iBook to sleep.
I feel that pressing keys keeps the iBook from sleeping, but
running processes or usage of the track pad do not.
This does not change when the Box in on AC or on Battery.

I rsynced against source.mvista.com yesterday (2002-11-18)
(no space for a Bitkeeper tree :-| )

Can someone help ?

Thanks

klaus.halfmann@t-online.de, 		(49)-(0)-6172/492497
Klaus Halfmann, Mainstrasse 8, 61352 Bad Homburg GERMANY


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RE: Unexpected sleep on old iBook

[Halfmann, Klaus]

> ...
> The kernel will never trigger a sleep by itself. Only
> pmud or pbbuttonsd may. You will want to look at those logs or
> track an eventual bug in there.
>
> Ben.

OK, I'll have a look at the pmud code and come back later.

klaus.halfmann@t-online.de, 		(49)-(0)-6172/492497
Klaus Halfmann, Mainstrasse 8, 61352 Bad Homburg GERMANY

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RE: Unexpected sleep on old iBook

[Michael Schmitz]

> > The kernel will never trigger a sleep by itself. Only
> > pmud or pbbuttonsd may. You will want to look at those logs or
> > track an eventual bug in there.
> >
> > Ben.
>
> OK, I'll have a look at the pmud code and come back later.

Please try running pmud with the -s or -S flag (signal init on power low)
and take note of the battery power level readings. I suspect the kernel
does return erroneous power readings on occasion, causing pmud to trigger
sleep. I've not been able to reproduce this on my Lombard Powerbook -
other users (iBook IIRC) report the battery power suddenly dropping to
zero from as much as 80%. I'm currently trying to collect more information
on this new feature.

	Michael


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Re: Unexpected sleep on old iBook

[Ethan Blanton]

Michael Schmitz spake unto us the following wisdom:
> Please try running pmud with the -s or -S flag (signal init on power low)
> and take note of the battery power level readings. I suspect the kernel
> does return erroneous power readings on occasion, causing pmud to trigger
> sleep. I've not been able to reproduce this on my Lombard Powerbook -
> other users (iBook IIRC) report the battery power suddenly dropping to
> zero from as much as 80%. I'm currently trying to collect more information
> on this new feature.

I have a first generation iceBook (500MHz/64MB stock/Rage128
Mobility), and I never see this behavior ... however, I recently
talked my girlfriend into a new iceBook, and the model she got
(600MHz/128MB stock/Radeon Mobility M6 LY) does.  It doesn't seem to
be predictable as best we can tell, and it doesn't happen often.  It
seems to happen whether the laptop is plugged into wall power or not.

(Does it irritate anyone else that there seems to be no *good* way to
 differentiate iBook versions?  I'm sure there's some motherboard
 resource version that's unambiguous, but come on...)

If I can provide any information that might be useful, please let me
know.  I have both of these laptops sitting in the same room with me
pretty much every day of the world for at least some period of time.

Ethan

--
And if I claim to be a wise man / it surely means that I don't know.
                -- Kansas, "Carry on Wayward Son"

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RE: Unexpected sleep on old iBook

[Halfmann, Klaus]

> From: Ethan Blanton [mailto:eblanton@cs.ohiou.edu]
> Sent: Dienstag, 19. November 2002 21:34
>...
> If I can provide any information that might be useful, please let me
> know.  I have both of these laptops sitting in the same room with me
> pretty much every day of the world for at least some period of time.
>
Ok, when I do
	pmud -ds 2>&1 | tee pmud.txt
I get:
pmud[1226]: pmud [treshold = 420, margin = 15] started
pmud[1226]: opening /dev/adb
pmud[1226]: opening /dev/pmu
pmud[1226]: pmu_op(0xea, ..., version req)
pmud[1226]: PMU version 12: iBook/G3 Pismo/G4 Titanium
pmud[1226]: starting monitoring loop
pmud[1226]: pmu_op(0xdc, ..., switch req)
pmud[1226]: pmu_op(0x6f, ..., smart battery req)
pmud[1226]: pmu_op(0x6f, ..., smart battery req)
pmud[1226]: timeleft = -1
pmud[1226]: running /etc/power/pwrctl maximum ac
pmud[1226]: PMU interrupt:
pmud[1226]:  40
pmud[1226]:  14
pmud[1226]: pmu_op(0xdc, ..., switch req)
pmud[1226]: pmu_op(0x6f, ..., smart battery req)
pmud[1226]: pmu_op(0x6f, ..., smart battery req)
pmud[1226]: timeleft = -1
... several seconds later ...
pmud[1226]: PMU interrupt:
pmud[1226]:  40
pmud[1226]:  14
pmud[1226]: pmu_op(0xdc, ..., switch req)
pmud[1226]: pmu_op(0x6f, ..., smart battery req)
pmud[1226]: pmu_op(0x6f, ..., smart battery req)
pmud[1226]: timeleft = -1
pmud[1226]: initiating user requested sleep
			... I did not touch the iBook at all ...
pmud[1226]: polling adb for trackpad
pmud[1226]: found a trackpad (id = 3)
pmud[1226]: trackpad settings tap drag lock
pmud[1226]: calling sync()
pmud[1226]: running /etc/power/pwrctl sleep ac
pmud[1226]: going to sleep
pmud[1226]: system awake again
pmud[1226]: requested settings tap drag lock
pmud[1226]: trackpad settings tap drag lock
pmud[1226]: running /etc/power/pwrctl wakeup ac

May I need to add additional debug output ?

klaus.halfmann@t-online.de, 		(49)-(0)-6172/492497
Klaus Halfmann, Mainstrasse 8, 61352 Bad Homburg GERMANY

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Re: Unexpected sleep on old iBook

[Segher Boessenkool]

Ethan Blanton wrote:
> (Does it irritate anyone else that there seems to be no *good* way to
>  differentiate iBook versions?  I'm sure there's some motherboard
>  resource version that's unambiguous, but come on...)

Just read the device tree:

/proc/device-tree/model  gives you the model name.
/proc/device-tree/scb#  gives you the revision number.


Segher


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Re: Unexpected sleep on old iBook

[Ethan Blanton]

Segher Boessenkool spake unto us the following wisdom:
> Ethan Blanton wrote:
> > (Does it irritate anyone else that there seems to be no *good* way to
> >  differentiate iBook versions?  I'm sure there's some motherboard
> >  resource version that's unambiguous, but come on...)
>
> Just read the device tree:
>
> /proc/device-tree/model  gives you the model name.
> /proc/device-tree/scb#  gives you the revision number.

I actually meant for the layman ...  I realize that I can look up
system resources (in this case OF values) that will tell me, but hand
me an iBook and ask me what rev it is ... no clue.

Ethan

--
And if I claim to be a wise man / it surely means that I don't know.
                -- Kansas, "Carry on Wayward Son"

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