Kernel patch that solves battery issues when for ubuntu ? [closed]

Solution 1:

Hopefully, the patch will make it into the 3.0.0-13 kernel update for 11.10. You can help testing.

https://wiki.ubuntu.com/Kernel/PowerManagement

PS: ...and if you don't want to wait, apply the relevant workarounds now. Note, some of the workarounds are only relevant for Intel GPUs.

http://www.omgubuntu.co.uk/2011/11/linux-power-regression-overheating-problem-on-thinkpad-fixed/

Example

To add the pcie_aspm option, open /etc/default/grub for editing with
gksudo gedit /etc/default/grub

find the the GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" and change it to GRUB_CMDLINE_LINUX_DEFAULT="quiet splash pcie_aspm=force", save and exit.

Then run sudo update-grub.

You can also verify whether Active State Power Management is enabled or not with
dmesg | grep -i aspm

Solution 2:

A kernel update is due after the SRU tickets have tags changed from "testing-needed" to "testing-done" (after testing has actually been done.)

To find the SRU tickets try looking on this web page:
http://people.canonical.com/~ubuntu-archive/pending-sru.html

For 11.10 switching from 3.0.0-12.20 to 3.0.0-13.22 requires verification of the following tickets:

#737388 #782389 #794642 #816484 #851697 #854399 #854468 #855239
#857297 #860868 #862583 #865171 #866021 #868628 #870127 #872711
#872811 #876701 #884847