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

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Wed Nov 30 08:44:01 PST 2011


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

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

           What    |Removed                     |Added
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                 CC|                            |fdo at colin.guthr.ie

--- Comment #2 from Colin Guthrie <fdo at colin.guthr.ie> 2011-11-30 08:44:01 PST ---
I presume that when (In reply to comment #0)
> Created attachment 53843 [details]
> alsa info log
> 
> 1. boot to X-windows.
> 2. set the output connector to "Analog Headphones" in sound preference.
>    It mute output, there is no sound.

I know this might sound like a silly question, but I presume you *do* actually
have headphones plugged in?

Assuming that you do have headphones plugged in, from your amixer output it
looks like "Master" and "Headphones" elements are setup correctly:

Simple mixer control 'Master',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined penum
  Playback channels: Mono
  Limits: Playback 0 - 87
  Mono: Playback 79 [91%] [-6.00dB] [on]
Simple mixer control 'Headphone',0
  Capabilities: pswitch penum
  Playback channels: Front Left - Front Right
  Mono:
  Front Left: Playback [on]
  Front Right: Playback [on]



However the "Front" element is turned off (as is intended):

Simple mixer control 'Front',0
  Capabilities: pvolume pswitch penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 87
  Mono:
  Front Left: Playback 0 [0%] [-65.25dB] [off]
  Front Right: Playback 0 [0%] [-65.25dB] [off]


I wonder if the underlying hardware is incorrectly plumbed in such a way as
this element affects Headphones?



A simple test is to call:

amixer -c0 set Front 50% unmute

(verify this has worked via "amixer -c0 get Front" and compare to the above
quoted text)



This should turn on the Front element. Do you suddenly hear sound through your
headphones?

If so, then I'd suggest that this is a problem with the setup of the HDA driver
for this particular hw/codec.

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