andre_debian(a)numericable.fr wrote:
My kernel version (Jessie) is 3.2.0-4-686-pae,
and I don't observe a good energy usage
of the battery, always very lower compared
to Windows and my desktop is recent (april 2015).
André
There are many things I do manually as I have not found a way to do it via
gui or so.
CPU frequency
GPU frequency
Wireless power
disks power
display
basically everything that consumes power and this power consumption can be
reduced. I have done this on 2 notebooks and 1 pc. Non of them was
configured properly after installation.
I am not using windows on the recent notebook, so I don't know how long it
lasts, but with wireless on with 10db power and display turned on most of
the time (75%) it was holding for 5h. (Dell Latitude e5440) kernel was
4.1.6 last time I was on the road
example i915.i915_enable_rc6=1 acpi_backlight=vendor in command line
https://wiki.ubuntu.com/Kernel/PowerManagement/PowerSavingTweaks
regards