Arch Linux

produnis

Member

From: Germany

Registered: 2014-09-29

Posts: 50

JACK2-dbus plays just noise

Hi there,

my laptop mainly runs PulseAudio. But sometimes I like to make music with ardour and rosegarden and such.
Thus I started jack1 with "pasuspender -- /usr/bin/jackd" and there I go...
That worked really nice.

Yesterday I was bored and so I tried so switch from jack1 to jack2-dbus, which means that I just did a

pacaur -S jack2-dbus lib32-jack2

I start it with the script from archwiki, which goes like

jack_control start
sudo schedtool -R -p 20 `pidof jackdbus`
jack_control eps realtime true
jack_control ds alsa
jack_control dps device hw:PCH,0
jack_control dps rate 44100 #44100 #48000
jack_control dps nperiods 2
jack_control dps period 64
sleep 10
qjackctl &
sleep 10
sudo schedtool -R -p 20 `pidof qjackctl`

qjackctl comes up and everything looks just fine, there are even Sinks from PulseAudio available and connected... but there is no sound from jack2 played anywhere.

If I kill pulseaudio and re-launch jack2, I am able to hear some sound. The problem is, that this sound is just noise. It seems to be the "music" I like to play (e.g. in Ardour), but instead of the "real" tunes, I hear it as destortion noise.
I thought that this could have to do with the samplerate given in my startscript, so I played with "44100" and "48000", but this would just change the speed of that noise...

I switched back to jack1, and everything works ....
Then I switched back to jack2-dbus, and all I get is "noise".

Is there something I missed to set up in order to switch from jack1 to jack2-dbus?