Sign up ×
Ask Ubuntu is a question and answer site for Ubuntu users and developers. It's 100% free.

I occasionally switch audio output from the ubuntu default pulse-audio to jack. this has created several problems that I haven't managed to fix in the past (no sound from firefox ever again, then switched to chromium which was fine), but now I am using google-chrome and whenever I switch on jack, I get no sound from the application. mind you, audio works fine from , say jukebox.

The steps I take to switch on jack are the following:

- run qjackctl
- start the audio server. 

Note: usually the PA tp jack source and sink modules haven't been started (why, oh why?) so I fire up a console and type in :

pactl load-module module-jack-sink channels=2; pactl load-module module-jack-source channels=2; pactl set-default-sink jack_out; pactl set-default-source jack_in

there, now jackd is up and running.

Now, I fire google-chrome from command line, and see the following when I visit a page in youtube to see a video:

[22624:22645:1119/] Not implemented reached in virtual std::string media::AudioManagerBase::GetDefaultOutputDeviceID()

Argh! any ideas?

share|improve this question
I fought with a similar problem using ALSA. For that, it was a question of creating a "default" alsa device (pcm.!default). Perhaps something similar with an alsa loopback device would work (see: – jwernerny Dec 13 '13 at 16:28

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.