Subwoofer still active when headphones plugged.

Erus_Iluvatar · 2010-09-15 09:04:38

Hi everyone,

I've just realised that on my laptop, the subwoofer is still playing music when i've plugged-in my headphones.

Kernel 2.6.35.4,
Alsa 1.0.23,
00:08.0 Audio device: nVidia Corporation MCP79 High Definition Audio (rev b1)

I don't know when this started, but I suspect a kernel update, because IIRC this was not happening when I installed Arch near the end of 2009 (that was 2.6.31 IIRC).

Thanks to Arch Rollback Machine, I can tell it begins with 2.6.34, and 2.6.33.4 works fine (second edit: in fact, with 2.6.33.4, the subwoofer does not works at all ).

To who must this be reported, how can I help more precisely?

Last edited by Erus_Iluvatar (2010-09-15 09:41:56)

Erus_Iluvatar · 2010-11-25 11:16:52

No ONE knows where I can report this?

brebs · 2010-11-25 11:28:01

Use the ALSA bugzilla.

Erus_Iluvatar · 2010-11-25 12:37:26

Thanks

Vermillion · 2010-11-25 13:39:00

I am not sure but if you enable 2.1 sound (somewhere in the configs, don't know where exactly) and if you plug in your 2.0 headphones it still uses the subwoofer. You need to switch from 2.1 to 2.0. What usually happens automatically but in your case it don't.

Got a similar problem but not with arch linux and alsa. I solved it somehow like this.

Erus_Iluvatar · 2010-11-25 13:47:42

Normal sound is 5.1, but yeah, perhaps a simple config file could solve the problem, let's see where it could be.

Arch Linux

#1 2010-09-15 09:04:38

Subwoofer still active when headphones plugged.

#2 2010-11-25 11:16:52

Re: Subwoofer still active when headphones plugged.

#3 2010-11-25 11:28:01

Re: Subwoofer still active when headphones plugged.

#4 2010-11-25 12:37:26

Re: Subwoofer still active when headphones plugged.

#5 2010-11-25 13:39:00

Re: Subwoofer still active when headphones plugged.

#6 2010-11-25 13:47:42

Re: Subwoofer still active when headphones plugged.

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