Hi Soeren and Till, Thanks for the info. I'm a bit confused with your remark Soeren - you're using the ondemand governer but you also say you put the CPU to 2.1 Ghz. Do you get the powersaving when you set the CPU to run at 1 Ghz manually or when you put the ondemand governer.
I'm not using Linux now but last time I checked I think I still got over 30 watts when I had the ondemand governer on and the brightness down to near minimum. Other C2D users seem to confirm this (e.g. Sven). In any case the cores seem to be running at 1k most of the time but this doesn't seem to help. I didn't turn off the backlight (I'm not even sure how to do that) nor disable the isight and I was probably using wireless. I think the C2D has a higher min fan speed of 2k rather but even then it often shoots up to 3-5k once you start doing anything. I'll try to see what I can do to reduce my power usage in Linux -- if the ATI card is only 0-2W then there shouldn't be too much of a difference between the C2D and the CD. Any recommendations on what I might be missing or what the issue might be? cheers, Sheer On 4/26/07, Soeren Sonnenburg <[EMAIL PROTECTED]> wrote: > On Thu, 2007-04-26 at 09:21 -0700, Till Straumann wrote: > > Soeren Sonnenburg wrote: > > > On Wed, 2007-04-25 at 22:47 +0200, Sheer El-Showk wrote: > > > > > >> On 4/25/07, Till Straumann <[EMAIL PROTECTED]> wrote: > > >> > > >>> /I can confirm your report (mbp, c1d here) - I also > > >>> found similar results (~17-18W) under osx. On linux > > >>> I get down to 20-21W (low brighness, disk at rest, CPU freq > > >>> at 1GHz, ati powerstate=1) but I found that unloading > > >>> the 'uvcvideo' driver (isight) seems to save almost > > >>> another ~1W or so - I'm at 19-20W right now. > > >>> > > >> This is considerably better than an mbp c2d. If you don't set > > >> powerstate to the lowest state what do you get? > > >> > > > > > > around 30W > > > > > > > > I can't confirm that the ATI powerstate makes 10W > > of a difference. In my case savings are only somewhere > > between 0-2W (mbp c1d). > > Ahh, sorry, I misread the email. I meant when I put the c1d to 2.1GHz I > get around 30W. regarding ati, I observe exactly the same thing ~1-2W > savings with powersave. > > > I don't do anything to the fans and unless the CPU gets > > busy (ondemand governor) the temperature doesn't > > seem to be excessive. > > I am also using the ondemand governor, but in addition force the minimum > fan speed a little higher (it is already 24 C in Berlin nowadays...) > > Soeren > ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ Mactel-linux-devel mailing list Mactel-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mactel-linux-devel
