Re: BUG: VIA HD Audio sound card support regressed

From: Takashi Iwai
Date: Wed Mar 09 2016 - 02:45:05 EST

On Wed, 09 Mar 2016 02:54:53 +0100,
Alexander Andrejevic wrote:
> Hi,
> A regression in the Intel HD Audio driver was introduced by commit
> 12daef65fd868cf30be5afe3e6be6689c44c7940 (2011-06-20 14:24:07 GMT).
> Namely, a VIA VT1708-based card with the PCI ID 1106:3288 stopped working
> entirely, even though no apparent error message is produced in the log by
> the driver.
> I've debugged this issue and determined that the card needs two additional
> initialization verbs to be sent to it:
> However, I don't know whether this applies to all VT1708-based cards (it
> most likely doesn't), nor how would they be affected by these additional
> commands, so I'm not sure how to properly patch this issue myself.
> Perhaps the correct way to do it is to add an SND_PCI_QUIRK for this card?

Could you open a bug report in and attach the outputs taken from both the old (good) kernel and the
recent broken one? Run the script with --no-upload option and use