Arch Linux

MkFly

Member

From: Mars

Registered: 2009-12-10

Posts: 141

ThinkPad T410: Seperate volume for headphones/speakers

I had Arch installed on a Dell Inspiron 1521 a bit back, and I liked how I could set the volume levels for headphones and speakers separately in alsamixer.  I liked this because I usually listen to music with my headphones, but I could mute the speakers, so even if I accidently unplugged my headphones in a quiet environment, my music wouldn't start blasting all over.

Now I'm running Arch on my new ThinkPad T410, and I only have "Master" volume in alsamixer, so I can't adjust the volume for the headphones and speakers separately.

*snipped*

$ hwinfo --sound

  Hardware Class: sound
  Model: "Intel 5 Series/3400 Series Chipset High Definition Audio"
  Vendor: pci 0x8086 "Intel Corporation"
  Device: pci 0x3b56 "5 Series/3400 Series Chipset High Definition Audio"
  SubVendor: pci 0x17aa "Lenovo"
  Driver: "HDA Intel"
  Driver Modules: "snd_hda_intel"

I tried a few different values in modprobe.conf for options snd-hda-intel model, some let me see S/PDIF in alsamixer, but that was the only change.

Anybody know what to do here?

MkFly

Member

From: Mars

Registered: 2009-12-10

Posts: 141

Re: ThinkPad T410: Seperate volume for headphones/speakers

Looks like this is a CX20585 chip:
http://www.thinkwiki.org/wiki/CX20585

edward.taylor89

Member

From: UK

Registered: 2010-10-21

Posts: 34

Re: ThinkPad T410: Seperate volume for headphones/speakers

I keep my 2.1 switched off when using headsets. I'm not meaning to sound facetious.

Try this: reboot into runlevel 1 and run 'alsaconf', then either reboot again or start your DE. This could add a few more devices in alsamixer.

I am uncertain as to whether this will work, but give it a shot nonetheless.

Last edited by edward.taylor89 (2010-11-10 23:39:00)

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'The perfect blossom is a rare thing. You could spend your life looking for one, and it would not be a wasted life.'

MkFly

Member

From: Mars

Registered: 2009-12-10

Posts: 141

Re: ThinkPad T410: Seperate volume for headphones/speakers

I keep my 2.1 switched off when using headsets.

Well, there's no hardware switch for my laptop speakers.

Try this: reboot into runlevel 1 and run 'alsaconf', then either reboot again or start your DE. This could add a few more devices in alsamixer.

Thanks for the idea ... I gave it a shot, same devices in alsamixer.

I really got used to that on the old Dell -- sure would be nice on the ThinkPad.  I wonder if it's just a case of setting the right model in modprob.conf ... but which one?

hunterthomson

Member

Registered: 2008-06-22

Posts: 794

Website

Re: ThinkPad T410: Seperate volume for headphones/speakers

Bump,

I'v looked everywhere and no one seems to have a fix. The problem is far worse then just the microphone stuff. There are no Right/Left stereo channels, only mono.

Realy, I bet lenovo messed up in the DSDT. Lenovo is notarius for exceptionally messed up BIOS tables like the DSDT.

### EDIT ###

Hum, no I was wrong. The speakers and headphones work in stereo. I just tested it in LMMS. I guess I should have done that before I posted about it

Last edited by hunterthomson (2010-12-15 04:12:01)

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OpenBSD-current Thinkpad X230, i7-3520M, 16GB CL9 Kingston, Samsung 830 256GB
Contributor: linux-grsec

MkFly

Member

From: Mars

Registered: 2009-12-10

Posts: 141

Re: ThinkPad T410: Seperate volume for headphones/speakers

Well, I'm not really too concerned with the mic, I just want to mute the speakers independently of the headphone jack.