[LAU] Sudden Jack problems

Peter Desjardins peter.desjardins.us at gmail.com
Wed Mar 17 10:35:52 EDT 2010

Hi.  I'm posting this to complete the story for the archives.

My problem went away after I restarted.  I guess that would have been
a reasonable thing to try first.

The updates I installed via the Ubuntu update manager required a
restart.  Maybe I failed to select real-time mode at the boot menu.  I
should learn how to make real-time mode the default in that menu.

Sorry for the noise.  Thanks for your help.


On Thu, Mar 4, 2010 at 10:48 PM, Peter Desjardins
<peter.desjardins.us at gmail.com> wrote:
> Hi.
> I have been using Jack, ALSA, and Ardour for some time without
> problems.  A few minutes ago my Ubuntu update manager prompted me to
> update packages.  I noticed that several of them were related to ALSA.
>  I installed them and restarted (I didn't pay attention to what they
> were).
> Now Jack will not start.  The failure message is pasted at the end of
> my mail here.  I don't think I made any other change to the
> configuration.
> Is anyone else having trouble with Jack after an Ubuntu ALSA update?
> It was working well two days ago.
> I'm using Ubuntu Studio 64bit 9.10, ALSA 1.0.20, and a Beringher
> UCA202 USB soundcard.
> Thanks for your help.
> Peter Desjardins
> 21:34:46.120 JACK connection graph change.
> jack main caught signal 12
> cannot read server event (Success)
> cannot continue execution of the processing graph (Broken pipe)
> <snip>
> cannot continue execution of the processing graph (Broken pipe)
> 21:34:46.143 Client deactivated.
> cannot continue execution of the processing graph (Broken pipe)
> 21:34:46.144 JACK was stopped successfully.
> 21:34:46.144 Post-shutdown script...
> 21:34:46.145 killall jackd

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