Displaying 2 results from an estimated 2 matches for "i915_enable_rc6".
2012 Aug 03
5
CentOS 6 : Tip for significantly increasing battery life / reducing power consumption (Thinkpad X220 Tablet)
...o Thinkpad x220 Tablet and I worked on reducing it. I just wanted
to share with the list one of the changes which gave me the most
significant improvement.
As per http://www.williambrownstreet.net/blog/?p=387, add the
following kernel arguments to the GRUB boot configuration:
pcie_aspm=force i915.i915_enable_rc6=1 i915.lvds_downclock=1
i915.i915_enable_fbc=1
(in /boot/efi/EFI/redhat/grub.conf since I use EFI,
/boot/grub/grub.conf otherwise)
As measured using PowerTop, this made the power consumption decrease
from 20W to 11W !
(I had already decreased it from 25W to 20W with the usual tips of
disabling ha...
2011 Nov 11
1
better way to test optimus laptop
...nouveau and i915 kernel modules loaded,
I put in my grub.conf settings so that
$ cat /proc/cmdline
BOOT_IMAGE=/boot/vmlinuz-3.1.0-7.fc16.x86_64
root=UUID=ce058d6c-d2ed-49e5-9869-965799f246a5 ro rd.md=0 rd.lvm=0
rd.dm=0 KEYTABLE=us quiet SYSFONT=latarcyrheb-sun16 rhgb rd.luks=0
LANG=en_US.UTF-8 i915.i915_enable_rc6=1 elevator=deadline
nouveau.nomodeset=0
$ sudo lsmod|grep nouve
$ sudo lsmod|grep i915
i915 389156 3
drm_kms_helper 26490 1 i915
drm 194532 5 ttm,i915,drm_kms_helper
i2c_algo_bit 4958 1 i915
i2c_core 25728 6
videodev,i2c_i801...