Improve Power Usage / Battery Life In Linux With TLP, I been using TLP from 3 to 4 weeks and My laptop is running 4 to 5 Deg cooler than windows 7/8, so here the tlp installation and configuration
sudo add-apt-repository ppa:linrunner/tlp
sudo apt-get update
sudo apt-get install tlp tlp-rdw smartmontools ethtool
sudo update-rc.d -f ondemand remove
The main config file of TLP is at /etc/default/tlp
sudo gedit /etc/default/tlp
Go to cpu frequency Section and and uncomment the following lines add the following config.
Next Section Set the cpu "turbo boost", uncomment if commented
Next Section Radeon graphics clock speed, comment it if you not using Radeon graphics
Next Section optical drive
Next Section PM for all pci(e) bus devices, Warning: experimental option, could cause system instabilities..But i found no problem just you have to put usb 2 devices in usb 2 port and usb 3 devices in usb 3 port
Some times my usb mouse dongle didn't work when i plug it in usb 3 port, work fine when i plug it in usb 2 port, and all my usb 3 devices are working properly no issue.
Save & Exit
You can also configure Devices to Disable on startup etc, there is very good help in config file.
I have an error that my Blue tooth device is not Disabled on start up, so if you face this problem just do the following config
sudo nano /etc/rc.local
And add the following line before exit 0
rfkill block bluetooth
Save & Exit & Reboot
Install indicator-cpufreq that help you alot Changing freq
sudo apt-get install indicator-cpufreq
Go to Dash > search startup > edit indicator-cpufreq add -f or copy paste the following command
this will let you see what Freq you are running.
PowerSavingTweaks Intel Graphics
sudo nano /etc/default/grub
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i915.lvds_downclock=1 drm.vblankoffdelay=1"
You do not need other tweaks as they are already added by defaults.
Check you TLP Stat
Check You System temperature
sudo tlp-stat -t
There is very good help at TLP Website
Useful Config Link 1