sony-vaio-z-series team mailing list archive

[Leonardo Rodriguez <draco_rosa@xxxxxxxxxxx>]

Norbert,

With 2.6.35 kernel and NVIDIA I can see power usage in powertop. It is 
usually around 25Wh at idle, varying between 20-30Wh. On occasion it 
drops to 17Wh.

Are you sure that lspci | grep VGA showing both cards is not an issue?


From the research I have done it seems like the excessive power 
consumption is related to kernel power management issues, which have 
only become worse in recent kernels. I guess I was expecting the sony 
module to somehow enable power management features not 
recognized/enabled by the kernel out of the box, but this doesn't seem 
to be the case, other than the ability to disable bluetooth.


Did you run powertop as root and *while* the AC is *UNPLUGGED*?

    Yes, I ran it with sudo and unplugged. On 2.6.40 kernel it shows 
0Wh, on 2.6.35 it shows ~25Wh. Apparently it's an older version.

So what do you want? You can use these handles to control practically...

I know I can "echo " parameters, but how do I set the module parameters 
at boot time? Do you just create an entry under /etc/modprobe.d and set 
the options there? What about the module loading order, etc?


thanks,
Leo