Messages in this thread | | | Date | Wed, 09 Mar 2016 08:44:52 +0100 | From | Takashi Iwai <> | Subject | Re: BUG: VIA HD Audio sound card support regressed |
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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
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