[pulseaudio-tickets] [Bug 43238] the output is muted after set the connector to "Analog Headphones"

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=43238

Colin Guthrie <fdo at colin.guthr.ie> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |NOTOURBUG

--- Comment #7 from Colin Guthrie <fdo at colin.guthr.ie> 2012-01-03 03:00:48 PST ---
(In reply to comment #6)
> Hi Colin,
> Would you please let me know if you need other info to check this issue?
> Do you get update of this issue? Thanks.

This is an alsa bug. "Front" element should not be used in the "Headphones"
path, but it *is* affecting the sound.

We have kinda worked around this now in PulseAudio (sorry I didn't make the
connection to this bug at the time):

commit 96369919e5100865e2469e42fb8f4b8e38e41aef
Author: David Henningsson <david.henningsson at canonical.com>
Date:   Mon Jul 4 10:12:17 2011 +0200

    alsa-mixer: Set "Front" control to 0 dB on headphone path

    I've seen more than one system where the volume control named
    "Front" is a part of audio path for headphones. This is somewhat
    of a compromise: While we don't merge it into the path, as that
    would be regressing machines where "Front" isn't a part of the
    audio path, it would still enable sound on these machines.

    BugLink: http://bugs.launchpad.net/bugs/804178
    Signed-off-by: David Henningsson <david.henningsson at canonical.com>


The "correct" fix is to ensure that Front does not affect Headphones at the
alsa level.

Anyway, as this is not a kmix or KDE issue but rather a general audio issue, I
think we should close this bug.

To the reporter, please try a recent PA version (i.e. 1.1) and feel free to
open a bug on freedesktop.org against pulseaudio if you still have problems.

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