Public bug reported:
I have a strange problem in 64 bit 8.10 Intrepid Ibex, which I have not
been able to find reported anywhere else in spite of extensive
searching.
Whenever the headphones are plugged in, the main speakers automatically
mute, as they should, but if any sound is played across the headphones
in this mode, the speakers emit a loud pop every two to five seconds,
until the sound playback is stopped or the hedphone plug is removed.
During this time, the sound plays perfectly with no distortion on the
headphones themselves.
This seems to happen regardless of the audio source (Audacious, Ubuntu
system sounds, Virtualbox with either PulseAudio or Alsa output.) The
pops seem to be at a louder volume level than the headphone audio or the
main audio would suggest, and it is loud enough and regular enough to
make using the headphones unfeasible. When I unplug the headphones, it
switches back to the speakers again automatically, and the speakers
sound just fine.
Intrepid seems to have detected my audio properly, with a Realtek
ALC889A codec, and the card shows as HDA Intel (I have a Gigabyte GA-
X48T-DQ6 motherboard, with the HDA front sound header connected.) When
I open up the volume control applet from Gnome, I have the "switches"
tab available, and a check-box there for "headphones," all of which came
up properly after install and required no special tricks to get working
like I've seen others had to use. The speakers are connected to the
main output jack on the motherboard, while the headphones are
plugged/unplugged from the front headphone jack. This feature does work
fine without the pop if I boot into windows, but I really prefer not to
do that.
I have not found any threads out there that describe a similar issue.
Most people seem to have problems even getting to the point that I
started at, and don't complain once they get the headphone switch to
work. Please Help!
The pop is too loud to ignore and makes the headphones pretty well
useless!
Here is some info that might prove useful:
The device that shows first in Volume Control is HDA Intel (Alsa mixer)
and in System -> Preference -> Sound, I have set all outputs to use that
device, though it does the same thing when set to auto.
I have both Front Mic and Line-in muted. Nothing is connected to those
jacks, anyway.
j...@cosmos:~$ cat /proc/asound/modules
0 snd_hda_intel
j...@cosmos:~$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC883 Analog [ALC883 Analog]
Subdevices: 0/1
Subdevice #0: subdevice #0
card 0: Intel [HDA Intel], device 1: ALC883 Digital [ALC883 Digital]
Subdevices: 1/1
Subdevice #0: subdevice #0
j...@cosmos:~$ head -n 1 /proc/asound/card0/codec*
Codec: Realtek ALC889A
** Affects: alsa-driver (Ubuntu)
Importance: Undecided
Status: New
** Tags: alsa audio control hda intel mixer switch volume
** Description changed:
I have a strange problem in 64 bit 8.10 Intrepid Ibex, which I have not
been able to find reported anywhere else in spite of extensive
searching.
Whenever the headphones are plugged in, the main speakers automatically
mute, as they should, but if any sound is played across the headphones
in this mode, the speakers emit a loud pop every two to five seconds,
until the sound playback is stopped or the hedphone plug is removed.
+ During this time, the sound plays perfectly with no distortion on the
+ headphones themselves.
This seems to happen regardless of the audio source (Audacious, Ubuntu
system sounds, Virtualbox with either PulseAudio or Alsa output.) The
pops seem to be at a louder volume level than the headphone audio or the
main audio would suggest, and it is loud enough and regular enough to
make using the headphones unfeasible. When I unplug the headphones, it
switches back to the speakers again automatically, and the speakers
sound just fine.
Intrepid seems to have detected my audio properly, with a Realtek
ALC889A codec, and the card shows as HDA Intel (I have a Gigabyte GA-
X48T-DQ6 motherboard, with the HDA front sound header connected.) When
I open up the volume control applet from Gnome, I have the "switches"
tab available, and a check-box there for "headphones," all of which came
up properly after install and required no special tricks to get working
like I've seen others had to use. The speakers are connected to the
main output jack on the motherboard, while the headphones are
plugged/unplugged from the front headphone jack. This feature does work
fine without the pop if I boot into windows, but I really prefer not to
do that.
I have not found any threads out there that describe a similar issue.
Most people seem to have problems even getting to the point that I
started at, and don't complain once they get the headphone switch to
work. Please Help!
The pop is too loud to ignore and makes the headphones pretty well
useless!
Here is some info that might prove useful:
The device that shows first in Volume Control is HDA Intel (Alsa mixer)
and in System -> Preference -> Sound, I have set all outputs to use that
device, though it does the same thing when set to auto.
I have both Front Mic and Line-in muted. Nothing is connected to those
jacks, anyway.
j...@cosmos:~$ cat /proc/asound/modules
0 snd_hda_intel
j...@cosmos:~$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC883 Analog [ALC883 Analog]
Subdevices: 0/1
Subdevice #0: subdevice #0
card 0: Intel [HDA Intel], device 1: ALC883 Digital [ALC883 Digital]
Subdevices: 1/1
Subdevice #0: subdevice #0
j...@cosmos:~$ head -n 1 /proc/asound/card0/codec*
Codec: Realtek ALC889A
--
Volume control headphone switch works, but causes loud pops in speakers
https://bugs.launchpad.net/bugs/318642
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