Displaying 2 results from an estimated 2 matches for "lvds_downclock".
2012 Aug 03
5
CentOS 6 : Tip for significantly increasing battery life / reducing power consumption (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 hardware, shutting down...
2015 Feb 09
17
[Bug 89047] New: linux-3.19 nvd9 Invalid rom content
...lists.freedesktop.org
Reporter: jan.vesely at rutgers.edu
QA Contact: xorg-team at lists.x.org
booting linux 3.19.0 fails to init nvd9 card with these messges in dmesg:
[ 0.000000] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-3.19.0-gentoo
root=/dev/sda3 ro quiet splash i915.lvds_downclock=1
init=/usr/lib/systemd/systemd drm.rnodes=1 reboot=a nouveau.pstate=1
[ 7.980357] nouveau 0000:01:00.0: enabling device (0004 -> 0007)
[ 7.980901] nouveau [ DEVICE][0000:01:00.0] BOOT0 : 0x0d9160a1
[ 7.980904] nouveau [ DEVICE][0000:01:00.0] Chipset: GF119 (NVD9)
[ 7.980906] no...