[ltp] Increased Power Consumption with Fedora 14

Chris Schumann linux-thinkpad@linux-thinkpad.org
Mon, 07 Mar 2011 19:59:15 -0600


On 03/07/2011 02:48 PM, Robert Tomsick wrote:
> On Mon, 2011-03-07 at 12:11 -0600, Chris Schumann wrote:
>> I have a ThinkPad T400. I was running Fedora 12. I formatted the
>> partition and installed Fedora 14.
>>
>> My power consumption as measured by powertop went from about 17W to
>> about 27W after using all of powertop's suggestions, as follows. The
>> machine starts at 32.3W.
>>
>> - increase writeback time
>> - enable USB suspend
>> - turn on HD audio powersave
>> - disable bluetooth
>> - enable wireless power saving
>> - enable runtime power management
>> - SATA power save
>>
>> The it continually shows these two:
>> hwC0D1 Conexant 2c06
>> hwC0D0 Conexant CX20561 (Hermosa)
>> are busy 100.0% of the time.
>>
>> What can I do to save power and get back to my former (or better) power
>> levels?
> Just a guess, do you have a modem/WWAN card that's enabled in the BIOS?
> If so, try disabling it.
I didn't think installing an OS would turn that back on, and it hasn't.

But I forgot the perhaps-most-important detail: I have Fedora 14 64-bit 
installed, and am comparing to Fedora 12 32-bit.

Any other ideas?

Thank you,
Chris