Sorry for the double mail Andrea, this was supposed to be on list (this is early in the morning here :/) ...
---------- Forwarded message ---------- From: Guillaume Pujol <[EMAIL PROTECTED]> Date: 17 juil. 2007 07:28 Subject: Re: macbook pro & powertop To: "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> 2007/7/17, [EMAIL PROTECTED] <[EMAIL PROTECTED]>:
well, yes, it's good, but not enough: my system still draws about 17-18 watt on idle (a mostly black tty in runlevel 1, only necessary kernel modules, filesystem mounted readonly, no audio, etc.), whereas mac os x gets away with as little as 11 (full functionality, all drivers, and graphic environment). so I'm wondering what causes such a big difference...
The difference may come from the GPU (Radeon X1600 Mobility), which oddly doesn't support powersaving under Linux (to be more specific, the binary blob from ATI doesn't support that feature). This results in the GPU always being at its full power, about 8 to 10W. This behaviour only happens on the MacBook Pro Core2Duo from november 2006 (maybe other laptops as well). See http://www.phoronix.com/forums/showthread.php?t=3130 Regards, _______________________________________________ Power mailing list [email protected] http://www.bughost.org/mailman/listinfo/power
