I have just upgraded from Maverick to Natty to Oneiric, since Maverick just
lost security support. My fan is running at high speed blowing hot air. I have
now removed my battery from my laptop and I'm strictly running on AC power.
Powertop shows:
Summary: 355,9 wakeups/second, 0,0 GPU ops/second and 0,0 VFS ops/sec
Usage Events/s Category Description
100,0% Device Audio codec hwC0D0: IDT
3,8 ms/s 86,3 Timer hrtimer_wakeup
28,9 ms/s 69,3 Process
/usr/lib/firefox-11.0/firefox
2,9 ms/s 46,3 Timer tick_sched_timer
22,8 ms/s 33,0 Process compiz
10,7 ms/s 31,8 Process /usr/bin/X :0 -auth
/var/run/lightdm/root/:0 -nolisten tcp v
1,5 ms/s 21,2 Interrupt [44] radeon
14,3 ms/s 8,2 Process
/usr/lib/unity/unity-panel-service
11,1 ms/s 3,0 Process //bin/dbus-daemon --fork
--print-pid 5 --print-address 7 --s
179,1 µs/s 7,2 kWork ieee80211_iface_work
0,9 ms/s 6,5 Interrupt [6] tasklet(softirq)
33,9 µs/s 4,2 kWork console_callback
...
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https://bugs.launchpad.net/bugs/877560
Title:
Audio codec draining power when not in use
To manage notifications about this bug go to:
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