lkml.org 
[lkml]   [2016]   [Mar]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: BUG: VIA HD Audio sound card support regressed
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:
>
> {0x26, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT}
> {0x26, AC_VERB_SET_EAPD_BTLENABLE, 0x02}
>
> 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 bugzilla.kernel.org and attach the
alsa-info.sh outputs taken from both the old (good) kernel and the
recent broken one? Run the script with --no-upload option and use
attachments.


Takashi

\
 
 \ /
  Last update: 2016-03-09 09:21    [W:0.052 / U:0.044 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site