Arch Linux

Mr.Cat

Member

Registered: 2008-09-27

Posts: 79

100% audio codec usage

I've noticed that powertop2 shows two entries for "audio codec". One seems to be my actual audio out and one is just 100% active. I've got laptop-mode instaled with all possible powr savings turned on. The laptop is lenovo thinkpad t410.

That's what powertop2 shows:

100,0%        Audio codec hwC0D0: Conexant (exaile )
100,0%        Audio codec hwC0D1: Conexant

The first entry goes 0% when nothing plays any sound and even shows some application info.
The second entry is justalways  100%.

That's my `lspci | grep Audio`.

00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 06)
01:00.1 Audio device: nVidia Corporation High Definition Audio Controller (rev a1)

So, there is an extra audio controller that does not seem to do anyting. In xfce mixer it is just a couple of "IEC 958" checkboxes.

So:
- Should I be bothered with that 100% active codec? My laptop battery seems to be dying (my laptop lasts ~1.5 hours on battery now) and I'm trying to minimize power usage.
- What can I do tho those 100%?

lolilolicon

Member

Registered: 2009-03-05

Posts: 1,722

Re: 100% audio codec usage

Disabling the relevant kernel modules should help.
Check

lsmod | grep snd

and rmmod + blacklist.

But I'm not sure about this...

Last edited by lolilolicon (2011-10-22 16:23:04)

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