Presently I have kernel 3.13.0-48-generic installed (from the automatic
updates). With Bluetooth and WiFi off I am able to bring the discharge
rate down to 12 W/h. Although now I have battery lifetimes in line with
those I had with Ubuntu 12.04, there is still a long way to go to catch
Windows.
--
A Windows user reports a discharge rate of 7-8 W/h running Word, with
WiFi and Bluetooth off:
http://forum.notebookreview.com/lenovo/574678-thinkpad-t420s-owners-
thread-10-print.html
With kernel 3.17 and no programmes running the discharge rate is about
the double of that.
Reagrds.
--
You rec
I managed to install and run the mainline kernel (3.17). With it the
battery discharge rate is dramatically down, about half of what it is
with kernel 3.13 (~ 15W), but still above what it was with Ubuntu 12.04.
Also, with kernel 3.17 it seems the automatic screen dimming is not
working.
Cheers.
Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v3.17 kernel[0].
If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.
If the mainline kernel does not fix t
** Package changed: ubuntu-release-upgrader (Ubuntu) => linux (Ubuntu)
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1347539
Title:
Abnormally high battery discharge rate on Lenovo T420
To manage n
