powertop, 2.6.22rc7 kernel on a thinkpad X31...

[Török Edvin]

On 7/4/07, Frédéric BOITEUX <fboiteux at calistel.com> wrote:
>         Hello,
>
>   I'm using powertop on my laptop to try to increase its autonomy, and
> I have good results using a 2.6.22rc7 kernel patched with :
>   - hrt1 patch (from http://tglx.de/projects/hrtimers/) to activate
>     "hidden" HPET off the ICH4-M chipset
>   - radeon patch to avoid vsync interrupt of my radeon graphic card
> In this configuration, I have an idle power consumption of about 8W,
> whereas I get 10W without these patches :-)
>
> I've noticed also some problems :-P   :
>
> 1/ the hardware clock can't be initialized : running
> "/etc/init.d/hwclock.sh start" always give :
>
> Setting the system clock..
> select() to /dev/rtc to wait for clock tick timed out

I've seen a thread about HPET and RTC problems here:
http://lkml.org/lkml/2007/7/4/7

--Edwin