[alsa-devel] No Headphone Jack Audio from Lenovo Docking Station with a T470 connected

[Dennis Wassenberg]

Hi,

are there any news on this?

I tested pin cfg 0x17 0x21211010 too. In general it looks good, but I
can not hear anything.

Does anyone have some hints what can I do or test to get the sound
working on Dock HP?

Thanks,

Best regards,
Dennis

> Hello,
> 
> I'm unable to get any sound from the Headphone Jack of a Lenovo Ultra
> Docking Station with a new Lenovo T470 connected. With a T440p however I
> get sound from the Docking Station Headphone Jack.
> 
> I did some research on my alsa configuration and found out that there is
> no pin configuration supplied from the Laptop BIOS that connects to the
> Docking Headphone Jack.
> 
> The hdajacksensetest tool only shows this when the Laptop is docked and
> a Headphone is pluged in:
> Pin 0x18 (Black Mic, Left side): present = No
> Pin 0x21 (Black Headphone, Left side): present = No
> 
> So I did some patchingOn 14.08.2017 11:36, Stefan Mark (JIRA) wrote:
>  using a early firmware load patch floating around the web targeting the
> same docking station for my older T440p laptop:
> echo 0x17 0x21211010 > /sys/class/sound/hwC0D0/user_pin_configs
> echo 1 > /sys/class/sound/hwC0D0/reconfig
> 
> Now my Docking Station Headphone Jack is being detected! :)
> 
> With the Headphone Connected:
> Pin 0x17 (Black Headphone, Docking station, Rear side): present = Yes
> Pin 0x18 (Black Mic, Left side): present = No
> Pin 0x21 (Black Headphone, Left side): present = No
> 
> And disconnected:
> Pin 0x17 (Black Headphone, Docking station, Rear side): present = No
> Pin 0x18 (Black Mic, Left side): present = No
> Pin 0x21 (Black Headphone, Left side): present = No
> 
> However there is STILL no sound even after unmuting everything in alsamixer!
> I'm pretty sure 0x17 is the right pincfg but I'm not sure about
> 0x21211010 and how I obtain such an address for my laptop.
> 
> Could someone please help me out here or give me a hint?
> 
> Here is a alsa-info.sh dump when the Laptop is not connected to the Dock:
> https://pastebin.com/eTNnfnzL
> 
> And here when the Laptop is connected to the Dock (No changes):
> https://pastebin.com/ySBsKUeH
> 
> And here after setting the pin config 0x17 0x21211010:
> https://pastebin.com/xmDfsNtQ
> 
> I'm sure I'm very close. But something is still missing. Any help is
> much apprechiated!
> 
> Thanks in advance
> Dieter
>