[ltp] very high number of wakeups (and power consumption) on T60p

Theodore Tso linux-thinkpad@linux-thinkpad.org
Wed, 27 Feb 2008 20:09:06 -0500


On Wed, Feb 27, 2008 at 07:46:10PM -0500, Peter F. Patel-Schneider wrote:
> Has anyone run into problems with tens of thousands of wakeups that are
> unexplained in powertop?  This does appear to be real as battery drain
> does jump up about 30-40%.

There was a bug that was fixed in a very recent BIOS release for most
Thinkpad which caused interrupts to go wild if bluetooth was enabled
and the usb modules were loaded.  You might want to try updating your
BIOS to the very latest firmware and see if the problem goes away.
Another workaround if you can't upgrade your firmware right away is to
disable bluetooth using "echo disable > /proc/acpi/ibm/bluetooth".  

If you depend on the Bluetooth interface, then your only option will
be to upgrade your BIOS.  :-0

						- Ted