[ltp] C4 state on x60s - any news?
Obi
linux-thinkpad@linux-thinkpad.org
Wed, 16 May 2007 16:20:05 -0700
have you tried on battery? My T41 won't get into C4 unless I'm battery
powered.
cheers
graziano
On Wed, May 16, 2007 at 07:48:12PM +0200, Stefan Blum wrote:
> Hi, I just recently compiled 2.6.21 to check out the power saving potential of
> the tickless kernel with powertop. It seems like I identified a lot of the
> processes that wake the kernel up rather often, and I can get to a decent
> wakeup rate of around 45-50 wakeups/second on a completely idle system under
> KDE. Now what strikes me is that the cpus only go as far as C3, and C4
> doesn't seem to be available at all. I read through an earlier discussion on
> this list on that specific topic, but found no solution. Now my question - is
> there a way to enable C4 on an x60s? Maybe a bios upgrade?
>
> Thanks in advance!
>
> Regards, Stefan
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--
+-----------------------+--------------------------+
| Graziano Obertelli | CS Dept. Rm 102 |
| graziano@cs.ucsb.edu | University of California |
| (805) 893-5212 | Santa Barbara, CA 93106 |
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