randomsound prevents proper alsa/pulseaudio startup

Bug #803222 reported by Mike Morris
20
This bug affects 4 people
Affects Status Importance Assigned to Milestone
randomsound (Ubuntu)
Confirmed
Undecided
Unassigned

Bug Description

When randomsound is enabled, it causes "arecord" to grab exclusive use of some sound hardware, which prevents alsa from properly detecting the hardware. The end symptom is that there is no system sound, and the alsamixer (and other similar apps) show only a "Dummy Output" sound device.... The same problem caused by other services (e.g. "slmodem") has been fairly widely reported, as I found in googling.

I think the fix may be to adjust the upstart job to require that alsa starts first, if present, but I don't know how to do that...

FYI: here is output of "fuser /dev/snd/*", which led me to determine that randomsound was the problem:

                     USER PID ACCESS COMMAND
/dev/snd/controlC0: root 1911 F.... arecord
/dev/snd/pcmC0D0c: root 1911 F...m arecord
/dev/snd/timer: root 1911 f.... arecord

Feel free to contact me for clarification if required.

Maverick; both gnome & kde;

Revision history for this message
Mike Morris (mike-musicplace) wrote :

This is clearly a duplicate - sorry. I don't know how I missed the others when I searched... I *did* search :-)

Revision history for this message
Launchpad Janitor (janitor) wrote :

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in randomsound (Ubuntu):
status: New → Confirmed
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