Battery is drained too quickly
- by LucaB
I'm getting really low battery life under ubuntu, not even close to windows. I tried powertop, and I saw that my laptop is consuming in idle nearly 20 watts (a bit more).
I tried to install laptop-mode-tools, change "good" into "bad" in powertop, but nothing changes. I see that I have the the HD audio output device which is running at 100% every time. Could this be the problem?
This is a report from powertop.
The battery reports a discharge rate of 22.8 W
The estimated remaining time is 33 minutes
Summary: 381.8 wakeups/second, 0.0 GPU ops/second and 0.0 VFS ops/sec
Usage Events/s Category Description
3.2 ms/s 182.7 Timer tick_sched_timer
100.0% Device Audio codec hwC0D3: Intel
7.9 ms/s 25.1 Process /usr/bin/X :0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch -background no
1.9 ms/s 24.2 Interrupt [6] tasklet(softirq)
2.9 ms/s 23.2 Process /usr/lib/chromium-browser/chromium-browser --type=zygote
8.1 ms/s 20.3 Process /usr/lib/unity/unity-panel-service
0.7 ms/s 17.4 Timer hrtimer_wakeup
4.2 ms/s 12.6 Process unity-2d-panel
604.4 µs/s 9.7 Process syndaemon -i 2.0 -K -R -t
149.7 µs/s 9.7 kWork ieee80211_iface_work
0.8 ms/s 8.7 Process metacity
19.5 ms/s 1.0 Process powertop
3.0 ms/s 6.8 Process //bin/dbus-daemon --fork --print-pid 5 --print-address 7 --session
699.0 µs/s 6.8 Process /usr/lib/thunderbird/thunderbird
4.3 ms/s 4.8 Process gnome-terminal
658.9 µs/s 2.9 Interrupt [1] timer(softirq)
75.1 µs/s 2.9 kWork iwl_bg_run_time_calib_work
163.8 µs/s 1.9 Process /usr/lib/accountsservice/accounts-daemon
70.6 µs/s 1.9 Process [ksoftirqd/2]
25.8 µs/s 1.9 Process [ksoftirqd/0]
1.0 ms/s 1.0 Process /usr/bin/python /usr/sbin/powernapd
408.2 µs/s 1.0 Process unity-2d-shell
189.8 µs/s 1.0 Process /usr/lib/chromium-browser/chromium-browser
124.4 µs/s 1.0 Process /usr/lib/unity-lens-applications/unity-applications-daemon
113.3 µs/s 1.0 Process /usr/lib/gnome-settings-daemon/gnome-settings-daemon
112.0 µs/s 1.0 Process nautilus -n
104.9 µs/s 1.0 Process /usr/lib/gvfs/gvfsd-trash --spawner :1.2 /org/gtk/gvfs/exec_spaw/0
77.5 µs/s 1.0 Process /usr/lib/x86_64-linux-gnu/colord/colord
75.6 µs/s 1.0 Process /usr/lib/gvfs/gvfs-gdu-volume-monitor
75.0 µs/s 1.0 Interrupt [53] i915
74.9 µs/s 1.0 Process /usr/lib/gvfs/gvfs-afc-volume-monitor
What should I do to make the battery consumption lower?
