From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751608AbcCICEp (ORCPT ); Tue, 8 Mar 2016 21:04:45 -0500 Received: from ol.sdf.org ([192.94.73.20]:49861 "EHLO sdf.lonestar.org" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1750888AbcCICEj (ORCPT ); Tue, 8 Mar 2016 21:04:39 -0500 X-Greylist: delayed 593 seconds by postgrey-1.27 at vger.kernel.org; Tue, 08 Mar 2016 21:04:39 EST Date: Wed, 9 Mar 2016 01:54:53 +0000 From: Alexander Andrejevic To: linux-kernel@vger.kernel.org Cc: tiwai@suse.de Subject: BUG: VIA HD Audio sound card support regressed Message-ID: <20160309015452.GA17148@SDF.ORG> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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? Regards, Alex NOTE: I'm not subscribed to the Linux Kernel Mailing List, so please CC your replies to my e-mail address. -- SDF Public Access UNIX System - http://sdf.lonestar.org