From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964792AbbE2H1Z (ORCPT ); Fri, 29 May 2015 03:27:25 -0400 Received: from mail-pa0-f50.google.com ([209.85.220.50]:34942 "EHLO mail-pa0-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932240AbbE2H1Q (ORCPT ); Fri, 29 May 2015 03:27:16 -0400 Date: Fri, 29 May 2015 00:27:14 -0700 From: Jeremiah Mahler To: Takashi Iwai Cc: linux-kernel@vger.kernel.org, Jaroslav Kysela , alsa-devel@alsa-project.org Subject: [BUG, bisect] ALSA: hda - No sound output Message-ID: <20150529072714.GA1338@hudson.localdomain> Mail-Followup-To: Jeremiah Mahler , Takashi Iwai , linux-kernel@vger.kernel.org, Jaroslav Kysela , alsa-devel@alsa-project.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 Takashi, all, On several of my machines there is no longer any sound output when running the latest linux-next (20150528). Activity can be seen in a mixer such as pavucontrol suggesting that there should be sound, but both the speakers and head phones are silent. I have bisected the kernel and found that the following patch introduced the bug. From 49fb18972581a781658a4637de76e6069ed5964e Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Wed, 27 May 2015 08:37:19 +0200 Subject: [PATCH] ALSA: hda - Set stream_pm ops automatically by generic parser This allows user to test power_save_node feature via sysfs or patch firmware even on the codecs that don't specify it. It'll also save a few lines. Signed-off-by: Takashi Iwai --- sound/pci/hda/hda_generic.c | 5 ++++- sound/pci/hda/patch_realtek.c | 1 - sound/pci/hda/patch_sigmatel.c | 1 - sound/pci/hda/patch_via.c | 1 - 4 files changed, 4 insertions(+), 4 deletions(-) -- - Jeremiah Mahler