Xen schreef op 24-12-2017 10:53:
Hi,
My use case is to provide shared access to a single card for both ALSA
and Pulse/Phonon.
I want to make this a little clearer.
1) ALSA only
2) ogg123 can do either ALSA or Pulse or ALSA with "pulse"
3) KDE uses Pulse
1) ogg123 "ALSA"
--> uses default device
2) ogg123 "Pulse"
--> uses Pulse which uses ALSA default device
3) ogg123 "ALSA with pulse"
--> uses ALSA "pulse" type which uses Pulse which uses ALSA default
device.
1) Hardware device is called "card":
pcm.card {
type hw
card CMI8762
device 2
}
2) Dmix device on top of that:
pcm.mix {
type dmix
ipc_key 1024
slave.pcm card
slave.rate 48000
bindings.0 0
bindings.1 1
}
3) Modify /usr/share/alsa/alsa.conf.d/pulse.conf to not load
pulse-alsa.conf,
so "pulse" is not set to pcm.!default.
# {
# func pulse_load_if_running
# files [
# "/usr/share/alsa/pulse-alsa.conf"
# ]
# errors false
# }
4) Mix is set to be default device:
pcm.!default {
type plug
slave.pcm mix
}
5) ~/.config/pulse/default.pa is modified to load ALSA:
load-module module-alsa-sink
6) ~/.config/pulse/client.conf is modified to set default sink to ALSA:
default-sink = alsa_output.default
7) Everything "works" but Pulse regularly fails, actually, it always
fails the first time, as if it does not know how to make a good
connection the first time.
-------------------------
$ ogg123 -d alsa file.ogg
Audio Device: Advanced Linux Sound Architecture (ALSA) output
Playing: file.ogg
Ogg Vorbis stream: 2 channel, 44100 Hz
Done.
-------------------------
$ ogg123 -d pulse file.ogg
Audio Device: PulseAudio Output
Playing: file.ogg
Ogg Vorbis stream: 2 channel, 44100 Hz
ERROR: buffer write failed.
Done.
-------------------------
Then the next time it succeeds.
This seems to be the main issue.
Lol.
And sometimes when it does run, I get corrupted audio (noise) until I
run through ALSA directly again.
So my main issue is that this system of letting PulseAudio use the
default ALSA device produces a lot of failed starts.
(If it uses ALSA at all; which KDE messes with).
------------------------------------------------------------------------------
Check out the vibrant tech community on one of the world's most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot
_______________________________________________
Alsa-user mailing list
Alsa-user@xxxxxxxxxxxxxxxxxxxxx
https://lists.sourceforge.net/lists/listinfo/alsa-user
