[alsa-devel] Recalcitrant input pin on ALC262

Takashi Iwai tiwai at suse.de
Mon Feb 2 07:50:09 CET 2009

At Sun, 01 Feb 2009 20:56:40 +0000,
Tony Vroon wrote:
> Good evening,
> Currently I am implementing full support for the Tyan Thunder n6650W and
> have noticed a pin complex that advertises input, but can't seem to be
> set to it:
> Node 0x1c [Pin Complex] wcaps 0x400001: Stereo
>   Pincap 0x00000020: IN
>   Pin Default 0x411111f0: [N/A] Speaker at Ext Rear
>     Conn = 1/8, Color = Black
>     DefAssociation = 0xf, Sequence = 0x0
>     Misc = NO_PRESENCE
>   Pin-ctls: 0x00:
> As you can see the pin capabilities reflect input. However, even after
> issuing this in the model-specific verbs:
> the pin-ctls firmly remains 0x00. Even the python-based hda-analyzer
> appears unable to flip the pin-ctls over to 0x20 and reports no error
> messages in the GUI or in the terminal.
> What am I missing please?

Try the same procedure to other pin.  If other pins work and this not,
it's no your fault but simply a hardware thing.  The codec information
isn't always right.

> Slightly related, is it considered acceptable to modify pin defaults if
> they are blatantly wrong? (Reported colour, N/A vs Fixed, etc)

Yes, especially if you are using the BIOS auto-parsing.


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