sleep states - maybe a dumb question...

sleep states - maybe a dumb question...

[Martin Lorenz]

Dear folks,

maybe this is a very dumb question, but I did not find an answer in the 
docs. (or I was not looking at the right place)

I see two different sleep-state capabilities on my laptop (run by a 
transmeta cursoe CPU) running 2.6.4 vanilla kernel and a debian unstable 
system.

# cat /proc/acpi/sleep
S0 S3 S4 S5

# cat /sys/power/state
standby mem disk

as I understand 'standby' is synonymous to 'S1', which is not showing up 
in the /proc version...

when issuing echo -n standby > /sys/power/state the system acts as if it 
would go to standby (switch to console, some output saying so, etc.) but 
resumes immediately.

what does that mean?
does my laptop lack S1/standby capability?

thanks for an explanation
-- 
martin lorenz
--
	They that can give up essential liberty
	to obtain a little temporary safety
	deserve neither liberty nor safety.
				-- Benjamin Franklin



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Re: sleep states - maybe a dumb question...

[Pavel Machek]

Hi!

> maybe this is a very dumb question, but I did not find an answer in 
> the docs. (or I was not looking at the right place)
> 
> I see two different sleep-state capabilities on my laptop (run by a 
> transmeta cursoe CPU) running 2.6.4 vanilla kernel and a debian 
> unstable system.
> 
> # cat /proc/acpi/sleep
> S0 S3 S4 S5
> 
> # cat /sys/power/state
> standby mem disk
> 
> as I understand 'standby' is synonymous to 'S1', which is not showing 
> up in the /proc version...
> 
> when issuing echo -n standby > /sys/power/state the system acts as if 
> it would go to standby (switch to console, some output saying so, 
> etc.) but resumes immediately.
> 
> what does that mean?
> does my laptop lack S1/standby capability?

Bug in Patricks code. It should not announce standby when
no S1 is available. Oh and it indeed is very igly to have
2 interfaces for same thing; hopefully that will get fixed, too.
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