On Tue, 26 Feb 2013 20:28:21 +0100, Håken Hveem  
<[email protected]> wrote:

> I have the same problem with Pulseaudio blocking access to the
> soundcard, so jackd does not work from the box.
>

This bug was about qjackctl blocking pulseaudio, not PA blocking jack.

There is in fact a bug in PA that makes it hard for jack to grab the audio  
device from PA.
There are different solutions:

1. have PA use another device, if you have multiple. Jack will always be  
able to grab
2. disable PA when starting jack, either by
  * using the tool pasuspender, like so: pasuspender -- sleep 30
  * turning of pulseaudio autospawn, and killing pulseaudio

This has been fixed in pulseaudio 3.0, so no need to report a new bug.  
Hopefully an SRU(stable release update) of the bugfix can find it's way to  
12.10 and 12.04 shortly.

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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to jack-audio-connection-kit in Ubuntu.
https://bugs.launchpad.net/bugs/480103

Title:
  Pulseaudio not working while jackd is running

Status in “jack-audio-connection-kit” package in Ubuntu:
  Confirmed

Bug description:
  Binary package hint: jackd

  Alsa works fine on my laptop, but when I start jack I don't hear any sound. 
Then when I stop jack the sound is working fine.
  Hardware : HP DV6-1119el
  Ubuntu: release 9.10 32 bit
  Soundcard:
  description: Audio device
                  product: R700 Audio Device [Radeon HD 4000 Series]
                  vendor: ATI Technologies Inc
                  physical id: 0.1
                  bus info: pci@0000:01:00.1
                  version: 00
                  width: 32 bits
                  clock: 33MHz
                  capabilities: bus_master cap_list
                  configuration: driver=HDA Intel latency=0
                  resources: irq:17 memory:da010000-da013fff

  Package : alsa_base release 1.0.20+dfgsubuntu5
  Package: jackd 0.116.1-4ubuntu2

  I don't have further information, I don't know if it is a problem
  originated by alsa, oss or jackd.

  If I can be helpful to discover the problem let me know.

  Thank you 
  Stefano

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