[ltp] Problem with ACPI Standby on G41

[linux-thinkpad@linux-thinkpad.org]

So wrote Peter B. West on Tuesday, 30 August 2005:
> 
> prosolutions@gmx.net wrote:
> >I have a G41 and have not been able to get the machine into ACPI Standby
> >mode at all.  I have tried all of:
> >
> >echo -n standby > /sys/power/state
> >echo -n 3 >/proc/acpi/sleep
> >echo 1 > /proc/acpi/sleep
> >
> >all of which have no effect and produce no syslog output.  I am certain
> >that the ACPI modules are all loaded:
> >
> >thermal
> >fan
> >button
> >processor
> >ac
> >battery
> >
> >cat /sys/power/state shows the following:
> >   standby mem disk
> >
> >cat /proc/acpi/sleep shows the following:
> >S0 S3 S4 S5
> >
> >In the BIOS I have set Wake on LAN disabled.  acpi -V reports:
> >acpi -V
> >     Battery 1: charged, 98%
> >     Thermal 1: ok, 52.0 degrees C
> >     AC Adapter 1: on-line
> >
> >I have tried with the ibm-acpi module loaded and unloaded, although my
> >understanding is that the only thing this module does is enable the Fn
> >key combos, which it doesn't support for this model anyways.  Any
> >suggestions or help would be greatly appreciated.
> 
> Daniel,
> 
> I'll be interested in your experiments, because I have a G41, and there 
> don't seem to be many out there.
> 
> I haven't tried suspend experiments with suspend yet, and I have been 
> waiting for swsusp2 to settle down.
> 
> Are you running ibm-acpi 0.11?
> 

I am running Linux 2.6.12 with ACPI and ibm-acpi compiled as modules.  

Interesting you should mention software-suspend.  I tried a kernel with
the rather unusual software-suspend-2.1.7.2-for-2.6.11-rc5 patch and
tried using software suspend.  It actually trashed my filesystem so hard
that I had to re-install everything.  The other problem is that it
supposedly does not work with the nvidia driver and requires shutting
down X, which makes the whole affair somewhat pointless.  At least with
Standby, if I could get it to invoke, X should not need to be shut down.
At least this has been the behavior on all previous Thinkpad models I've
used.

I have just turned on power management and ACPI debugging in the kernel
but still don't see any output.  I will keep experimenting.

Thanks IBM once again for your great Linux support.