[alsa-devel] Enable docking station speaker jack for new Lenovo Thinkpads

[Takashi Iwai]

At Tue, 31 Jul 2012 00:13:45 +0200,
Mario wrote:
> 
> Hi all,
> 
> for new Lenovo Thinkpads (mine T530, will probably affect all new 
> [TXW][45]30 models), the model=thinkpad module option does not enable 
> the speaker jack of the docking station.

Which kernel are you using?

> Sound works perfectly with the 
> laptop, only the docking station needs extra work. I managed to get it 
> work using hda-analyzer. It produced the following diff:
> 
> Diff for codec 0/0 (0x10ec0269):
> ---
> +++
> @@ -210,28 +210,28 @@
>     Unsolicited: tag=0x00, enabled=0
>     Power: setting=D0, actual=D0
>     Connection: 2
>        0x0c* 0x0d
>   Node 0x1b [Pin Complex] wcaps 0x40058f: Stereo Amp-In Amp-Out
>     Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0
>     Amp-In vals: [0x00 0x00]
>     Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
> -  Amp-Out vals: [0x80 0x80]
> +  Amp-Out vals: [0x00 0x00]
>     Pincap 0x00003734: IN OUT Detect
>       Vref caps: HIZ 50 GRD 80 100
>     Pin Default 0x411111f0: [N/A] Speaker at Ext Rear
      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

This is the reason.  The driver checks the pin config set by BIOS,
and it leaves this pin unused.  Could you give alsa-info.sh output for
more checks?

The upcoming 3.6-rc1 kernel (or the current Linus git tree) already
has a support for dock for Lenovo with ALC269 codec variants.  But
it's applied only to Thinkpad X230 tablet, so far.  Thus it might not
work as is for your device. In that case (with 3.6-rc1 kernel),
passing model=lenovo-dock might make it working.


Takashi

>       Conn = 1/8, Color = Black
>       DefAssociation = 0xf, Sequence = 0x0
>       Misc = NO_PRESENCE
> -  Pin-ctls: 0x20: IN VREF_HIZ
> -  Unsolicited: tag=0x00, enabled=0
> -  Power: setting=D0, actual=D0
> -  Connection: 2
> -     0x0c* 0x0d
> +  Pin-ctls: 0x40: OUT VREF_HIZ
> +  Unsolicited: tag=0x00, enabled=0
> +  Power: setting=D0, actual=D0
> +  Connection: 2
> +     0x0c 0x0d*
>   Node 0x1c [Vendor Defined Widget] wcaps 0xf00000: Mono
>   Node 0x1d [Pin Complex] wcaps 0x400400: Mono
>     Pincap 0x00000020: IN
>     Pin Default 0x40138205: [N/A] Speaker at Ext N/A
>       Conn = ATAPI, Color = Purple
>       DefAssociation = 0x0, Sequence = 0x5
>     Pin-ctls: 0x20: IN
>     Power: setting=D0, actual=D0
> 
> Relevent lspci entry:
> 
> 00:1b.0 Audio device [0403]: Intel Corporation 7 Series/C210 Series 
> Chipset Family High Definition Audio Controller [8086:1e20] (rev 04)
> 
> Chip: Realtek ALC269VC
> 
> Further alsa-info: 
> http://www.alsa-project.org/db/?f=e297bdda4fd099425516c7c831e28a2c7d8ae6b6
> 
> Unfortunately, I failed to create a working hda-verb script. I can
> change the out-pin with:
> 
> hda-verb /dev/snd/hwC0D0 0x1b SET_PIN_WIDGET_CONTROL 0x40
> 
> but I did not find the command to unmute the channel. Can anyone tell me 
> which options are necessary and can this easily be fixed in the kernel?
> 
> Also, hda-analyzer showed me two mixer devices, they produce a slightly
> different sound. I don't know if this is important.
> 
> Thank you very much!
> Mario
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