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Hi
> 5) Power off your secondary video card, it may save significant
> amount of power. This can be done by bumblebee or directly
> through bbswitch kernel module, instructions (may be a bit
> outdated):
http://fedoraproject.org/wiki/Bumblebee or directly
> follow the bbswitch readme:
>
http://github.com/Bumblebee-Project/bbswitch
Here I have some trouble. There was no error while compiling.
But...: Feb 19 20:00:48 asus systemd[1]: Starting Bumblebee C
Daemon... Feb 19 20:00:48 asus systemd[1]: Started Bumblebee C
Daemon. Feb 19 20:00:48 asus bumblebeed[16605]: modprobe: ERROR:
could not insert 'bbswitch': Required key not available Feb 19
20:00:48 asus bumblebeed[16605]: [ 3989.940415] [ERROR]Module
bbswitch could not be loaded (timeout?) Feb 19 20:00:48 asus
bumblebeed[16605]: [ 3989.940468] [WARN]No switching method
available. The dedicated card will always be on. Feb 19 20:00:48
asus bumblebeed[16605]: [ 3989.944307]
[INFO]/opt/bumblebee/sbin/bumblebeed 3.0.1 started
I have disabled secure boot in BIOS. Ther bbswitch kernel moduled was
loaded successful.
[ 7.570248] bbswitch: version 0.5
[ 7.570252] bbswitch: Found integrated VGA device 0000:00:02.0:
\_SB_.PCI0.GFX0
[ 7.570257] bbswitch: Found discrete VGA device 0000:01:00.0:
\_SB_.PCI0.PEG0.PEGP
[ 7.570348] bbswitch: detected an Optimus _DSM function
[ 7.570354] bbswitch: Succesfully loaded. Discrete card
0000:01:00.0 is on
[ 7.580076] bbswitch: disabling discrete graphics
If I can trust powertop, the power consumption decreased from 15 watts
to 10 watts. Hey, that is one third!
Thanks again
Uwe
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