'Front' and 'PCM' mixer control elements must be unmuted by default on HDA platforms
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
pulseaudio (Ubuntu) |
Fix Released
|
High
|
Daniel T Chen |
Bug Description
Binary package hint: pulseaudio
[Problem]
Pulseaudio does not directly expose or allow adjustment of arbitrary mixers on the underlying card.
[Workaround]
a. alsamixer -c 0 # where 0 is the hw id of the audio card
b. alsamixer -Dhw:0 # ditto
c. with the gnome panel applet, if you right-click, choose preferences, and adjust the "Master" and "PCM" channels.
d. shutdown pulseaudio, run alsamixer, and restart pulseaudio
`sudo alsactl store` may need to be run to make the changes persistent.
[Original Report]
On HP 6730b, got no sound output from any application.
Turns out that the PCM channel on the hardware mixer was set to zero / muted, and none of the standard knobs on the Gnome desktop could adjust it.
Fixed on my box with "alsamixer -c 0", although I guess not every new user will immediately jump on that one.
This is tested on Jaunty. pulseaudio package (0.9.13-2ubuntu5)
Pulse audio doesn't appear to expose or allow adjustment of arbitrary mixers on the underlying card.
Is there any mechanism by which pulseaudio can reliably expect the various mixer channels it is relying on to be raised?
Related branches
- Luke Yelavich: Pending requested
description: | updated |
Changed in pulseaudio: | |
status: | Incomplete → Confirmed |
Changed in pulseaudio (Ubuntu): | |
assignee: | nobody → Daniel T Chen (crimsun) |
milestone: | jaunty-alpha-4 → karmic-alpha-2 |
status: | Confirmed → Fix Committed |
For this laptop, it also helps to add:
options snd_hda_intel model=laptop
to a file in /etc/modprobe.d/
I'm just hunting out the proper package which could have a quirk added to auto-detect this