Messages in this thread | | | Date | Sun, 6 Jul 2008 19:21:59 +0200 | From | Tino Keitel <> | Subject | Re: Battery life difference |
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On Sat, Jul 05, 2008 at 18:44:21 +0300, Felipe Balbi wrote: > Hi, > > On Sat, Jul 5, 2008 at 6:23 PM, Arjan van de Ven <arjan@infradead.org> wrote:
[...]
> > Also take a look at > > http://kerneltrap.org/mailarchive/linux-kernel/2008/5/8/1771024 because > > these patches save like 0.75W in our lab. > > cool, is it merged upstream ?
If I got this right, at least Linux 2.6.25 allows to control this via "/sys/class/scsi_host/host*/link_power_management_policy". Setting it to "min_power" does the trick. This is also covered by powertop 1.10 and later.
Regards, Tino
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