Re: [gentoo-laptop] powermgr: Unified power management for Gentoo

[Fernando Meira]

Hi,
Is there any documentation on how to use powermgr?

On 7/27/05, Thomas Tuttle <tom@×××××××××××××××××××××××.org> wrote:
>
> Okay, the best way to do that would be to (using powermgr) create a
> profile named "hot" and then write your script like so:
>
> #!/bin/pseudocode-interpreter
> if (TEMP > $HOT) {
> echo "System is actually hot, slowing everything down.";
> powermgr --profile hot;
> sleep 5;
> if (TEMP > $HOT) {
> echo "System is about to explode, shutting down.";
> poweroff;
> } else {
> echo "System has cooled down, returning to normal."
> powermgr --auto;
> }
> } else {
> echo "System is just being foolish and is not hot.";
> }
>
> The "hot" profile would probably look like this:
>
> Profile hot
> cpu frequency = 0%
> EndProfile
>
> That way it would slow down the CPU frequency without playing with other
> stuff like brightness.
>
> On Wed, 2005-07-27 at 10:33 -0400, Devon Miller wrote:
> > Thanks Thomas, I'll definitely check it out. One feature I would like
> > to see is the ability to throttle the cpu to manage temperature.
> >
> > My laptop occasionally reports spurious high temperatures. Within 3
> > polls the temperature might be reported as 70C, 97C, 70C. When the
> > kernel sees the 97C it powers off the system.
> >
> > I've hacked around this by patching the kernel to run /sbin/overheat
> > instead of /sbin/poweroff. Overheat checks the temp again and if it's
> > still hot, shuts down powernowd and sets the cpufreq to its minimum
> > value It then sleeps for 5 seconds and if the temp is still 90C+,
> > calls poweroff.
> >
> > The downside is the system is now left in a very slow state. I have
> > not written something to bring it back to a dynamic clocking state. A
> > daemon that would manage all of this would be really appreciated! (Of
> > course, the kernel would still need to be patched to not poweroff
> > until the daemon has had a chance to try cooling things down.)
> >
> > <dcm>
> >
> >
> > On 7/13/05, Thomas Tuttle <tom@×××××××××××××××××××××××.org> wrote:
> > I've been working on a program called powermgr. It's a daemon
> > written
> > in Perl that can control many power management functions on
> > Linux,
> > including CPU frequency and/or governor, screen brightness,
> > laptop mode,
> > fan speed, wireless power management, as well as runlevel and
> > services,
> > based on the state of the system.
> >
>
>
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v1.4.1-ecc0.1.6 (GNU/Linux)
>
> iD8DBQBC556Z/UG6u69REsYRAo8qAJ9w8ab8s183nvc3cN/AXh1tqeUt3wCfYSUT
> fu3lk34QqS3XwoUdpQtK48U=
> =/Lqt
> -----END PGP SIGNATURE-----
>
>
>