> On Thu, Nov 27, 2014 at 03:03:33AM -0500, ho...@rumormillnews.com wrote:
>> > On Wed, Nov 26, 2014 at 05:55:24PM -0500, ho...@rumormillnews.com
>> wrote:
>> >> For years, ALSA has allowed me to have two apps open at one time -
>> for
>> >> example, a YouTube video could be playing in my browser while vlc was
>> >> also
>> >> open, paused on playback of a 3-hour mp3.
>> >>
>> >> That's changed with a recent Debian update. Now, if a YouTube video
>> is
>> >> playing and I try to start vlc, I get an error message:
>> >>
>> >> The audio device "dmix:CARD=CK804,DEV=0" could not be used:
>> >> Device or resource busy.
>> >>
>> >> What changed with that recent update? I have no idea. After lots of
>> >> Internet searching, I put this into an .asoundrc file:
>> >>
>> >> -
>> >>
>> >> pcm.!default {
>> >> type plug
>> >> slave.pcm "dmixer"
>> >> }
>> >>
>> >> pcm.dmixer {
>> >> type dmix
>> >> ipc_key 1024
>> >> slave {
>> >> pcm "hw:0,0"
>> >> period_time 0
>> >> period_size 1024
>> >> buffer_size 4096
>> >> rate 44100
>> >> }
>> >> bindings {
>> >> 0 0
>> >> 1 1
>> >> }
>> >> }
>> >>
>> >> ctl.dmixer {
>> >> type hw
>> >> card 0
>> >>
>> >> -
>> >>
>> >> That made no meaningful change to the situation that I can see. How
>> can
>> >> I
>> >> bring back the original ALSA behavior that served me so well for
>> years?
>> >
>> > Do you know if pulseaudio is installed?
>> >
>> > dpkg -l | grep pulseaudio
>> >
>> >
>> >> Thanks in advance.
>> >>
>> >> --hobie
>> >
>> > --
>> > Joel Roth
>>
>> Hi, Joel - Thanks. :) Synaptic says "no" but running the dpkg -l
>> command
>> indicates pulseaudio 2.0.3 is present. (!) It isn't, but there's a fair
>> number of residual files around from some earlier install, including
>> things like the gstreamer1.0-pulseaudio plugin and PulseAudio client
>> libraries. I don't _think_ there's anything there that would cause ALSA
>> to block...?
>
> AIUI, that if pulseaudio is running, your programs are
> not getting direct access to ALSA. There is an additional
> layer.
>
> My expertise doesn't extend to pulse audio. I recall it adds
> some convenience, like being able to provide a separate
> volume control for each app, which can help in a GUI
> environment. Nothing I need.
>
> ALSA should default to mixing. You shouldn't need any
> special asoundrc to get that.
>
> I would be surprised if aptitude and dpkg reported
> different status for the same package!
>
> cheers,
>
> Joel
>
Agreed. :) dpkg -l says:
dpkg -l |grep pulseaudio
ii gstreamer0.10-pulseaudio:amd64
0.10.31-3+nmu4+b1 amd64 GStreamer plugin for
PulseAudio
ii gstreamer1.0-pulseaudio:amd64 1.4.4-2
amd64 GStreamer plugin for PulseAudio
rc pulseaudio 2.0-3
amd64 PulseAudio sound server
Maybe the 'rc' at the start of that line has a meaning I don't know?
Anyway - it looks like pulseaudio is not actually present. I agree, too,
that ALSA should allow mixing without extra configuration. That's what it
had been doing for years, until a recent update apparently changed
something.
--hobie
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