From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965840AbcCOTt0 (ORCPT ); Tue, 15 Mar 2016 15:49:26 -0400 Received: from mx2.suse.de ([195.135.220.15]:57408 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965800AbcCOTtY (ORCPT ); Tue, 15 Mar 2016 15:49:24 -0400 Date: Tue, 15 Mar 2016 20:49:22 +0100 Message-ID: From: Takashi Iwai To: "Laura Abbott" Cc: "Jaroslav Kysela" , , "linux-kernel@vger.kernel.org >> Linux Kernel Mailing List" Subject: Re: [REGRESSION] Headphones no longer working on MacPro6,1 with 4.4 In-Reply-To: References: <56E8611D.8090005@redhat.com> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI/1.14.6 (Maruoka) FLIM/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL/10.8 Emacs/24.5 (x86_64-suse-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka") Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 15 Mar 2016 20:38:41 +0100, Takashi Iwai wrote: > > On Tue, 15 Mar 2016 20:23:09 +0100, > Laura Abbott wrote: > > > > Hi, > > > > We received a bug report https://bugzilla.redhat.com/show_bug.cgi?id=1316119 > > that the headphone jack on a MacPro6,1 stopped working on an upgrade from 4.3 > > to 4.4. > > > > The bugzilla has the alsainfo, diffing shows that the Amp-Out vals are > > different. I tried a revert of 9f660a1c4 (" ALSA: hda/realtek - Fix silent > > headphone output on MacPro 4,1 (v2)") but that didn't help. > > > > Any ideas before asking for a bisect? Does this hardware version need to have > > the vref fixup as well? > > The obvious difference is the power state of each node. The recent > kernel has the finer power saving mode, and this might be the cause -- > Mac has some secret that requires some node to be powered up. > > Try to power on each node via hda-verb. For example, to power up the > node 0x05, run like: > hda-verb /dev/snd/hwC0D0 0x05 SET_POWER 0x01 Oops, a typo: the last argument must be 0x00, corresponding to D0: hda-verb /dev/snd/hwC0D0 0x05 SET_POWER 0x00 Takashi