strange lvds_downlock did not improve battery life

I guess i would delete it

Code:
sudo rm /etc/modprobe.d/i915.conf
i going to add it to grub default

follow the guide to permentely add it on the bottom of the page
https://wiki.ubuntu.com/Kernel/KernelBootParameters

i want you to add these two between the quotes
Code:
i915.i915_enable_fbc=1   i915.lvds_downclock=1
so it should look something like this

GRUB_CMDLINE_LINUX="quiet splash i915.i915_enable_fbc=1 i915.lvds_downclock=1"

then
Code:
sudo update-grub