power management - Ubuntu consumes too much battery - Ask Ubuntu

i've switched ubuntu 16.10 (gnome) recently. before, used windows 10. working , ubuntu. however, consumes power (only 3 hours compared more 4 hours windows 10). besides, charging time longer in windows.

can give me advice? lot.

you have aspire r7. if assumptions correct, either intel broadwell-based computer or skylake-based. (core i5/i7-5xxx/6xxx)

there many ways conserve power in ubuntu. in 16.10, tlp default included. configure tlp from:

sudo gedit /etc/default/tlp 

i recommend setting cpu governor powersave when on battery, , performance when plugged in. there several other power saving settings there.

install powertop:

sudo apt-get install powertop 

and open sudo powertop in terminal. can view "tunables" in rightmost tab. can either auto-adjust with:

sudo powertop --auto-tune 

or create html power report:

sudo powertop --html=powertop.html 

which can view in terminal directory. in html file list of tunable commands. put in rc.local script.

if have broadwell/skylake version of r7, have known c-state bug current intel cpus. c-states sleep states can utilized cpu, , higher sleep states can save considerable power. may need play around disabling devices (sd card reader, ethernet, etc.) working c-states. unfortunately, known issue , may not fixed quite while.

the current c-state bug not allow cu achieve c-states lower c3. can view current c-states in "idle stats" in powertop, on left hand side.

finally, if you're desperate, use lightweight de, or wm. after fixing c-state issues in laptop, , switching i3 window manager, @ least 7 hours of battery life (heavy browsing, videos, casual gaming).