[ltp] Excessive power consumption: x220 with Fedora 15

[Patrick Siegl]

I've wrote something about power consumption on x220.

Look at:
http://www.thinkwiki.org/wiki/Installing_Gentoo_on_a_ThinkPad_X220#Optimized_grub.cfg

Regards
Patrick




-------- Original-Nachricht --------
> Datum: Fri, 26 Aug 2011 03:40:25 -0600
> Von: Christos Papadopoulos <christos@cs.colostate.edu>
> An: linux-thinkpad@linux-thinkpad.org
> Betreff: Re: [ltp] Excessive power consumption: x220 with Fedora 15

> On 08/25/2011 01:12 PM, Lars Seipel wrote:
> > On Thursday, August 11, 2011 11:33:46 AM Christos Papadopoulos wrote:
> >> Powertop reports 16-17W with machine idle. Unit is X220-4286, Intel
> >> graphics and network. Is this normal? Any ideas how to reduce it?
> >
> > Some option for the i915 kernel module got disabled by default because
> it
> > caused serious regressions for some people. See this upstream kernel
> commit
> >
> >
> http://git.kernel.org/?p=linux/kernel/git/stable/linux-3.0.y.git;a=commitdiff;h=05bd42688dbc066d4e2689b6f73c0470601f788b
> >
> > Unfortunately this led to an increased power consumption on other
> devices.
> > Luckily, it can be trivially turned on again. See
> >
> > https://bugzilla.redhat.com/show_bug.cgi?id=727579
> >
> > Solution works for me on X220...
> >
> > Lars
> 
> Thank you! Powertop now reports under 9W at idle with minimum 
> brightness. Much better!
> 
> Christos.
> 
> -- 
> The linux-thinkpad mailing list home page is at:
> http://mailman.linux-thinkpad.org/mailman/listinfo/linux-thinkpad

-- 
Empfehlen Sie GMX DSL Ihren Freunden und Bekannten und wir
belohnen Sie mit bis zu 50,- Euro! https://freundschaftswerbung.gmx.de