[SOLVED] pulseaudio: no sound

[David Naylor]

On Tuesday, 20 January 2015 18:45:17 David Naylor wrote:
> Dear Gnome list,
> 
> On my current installation PulseAudio fails to play any sound.  Can you
> please suggest the appropriate location to report this issue.
> 
> # pulseaudio
> W: [(null)] caps.c: Normally all extra capabilities would be dropped now,
> but that's impossible because PulseAudio was built without capabilities
> support. E: [(null)] ltdl-bind-now.c: Failed to open module
> module-oss-mmap.so: Shared object "module-oss-mmap.so" not found, required
> by "pulseaudio"
> E: [(null)] module.c: Failed to open module "module-oss-mmap".
> E: [(null)] main.c: Module load failed.
> E: [(null)] main.c: Failed to initialize daemon.

I had modified default.pa causing pulseaudio to load the incorrect module.  
Sound still didn't play as pulseaudio selects sink 0 as the default, even 
though it reports:

# pulseaudio 
W: [(null)] caps.c: Normally all extra capabilities would be dropped now, but 
that's impossible because PulseAudio was built without capabilities support.
W: [(null)] oss-util.c: '/dev/dsp0' doesn't support full duplex
W: [(null)] oss-util.c: '/dev/dsp1' doesn't support full duplex
W: [(null)] oss-util.c: '/dev/dsp2' doesn't support full duplex
W: [(null)] oss-util.c: '/dev/dsp3' doesn't support full duplex

However, please note:
# cat /dev/sndstat 
Installed devices:
pcm0: <NVIDIA GT440 (HDMI/DP 8ch)> (play)
pcm1: <NVIDIA GT440 (HDMI/DP 8ch)> (play)
pcm2: <NVIDIA GT440 (HDMI/DP 8ch)> (play)
pcm3: <NVIDIA GT440 (HDMI/DP 8ch)> (play)
pcm4: <Realtek ALC892 (Rear Analog 5.1/2.0)> (play/rec) default
pcm5: <Realtek ALC892 (Front Analog)> (play/rec)
pcm6: <Realtek ALC892 (Rear Digital)> (play)
pcm7: <Realtek ALC892 (Rear Digital)> (play)

OSS selects the correct output (pcm4, or sink 4) by default: no user 
intervention required.  

Issues:
# pacmd set-default-sink 4

Fixes sound for me.  

Regards
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