[LAU] qjackctl fails to exit gracefully on UbuntuStudio 10.4

alexander axeldenstore at gmail.com
Sun May 30 14:55:49 UTC 2010


On 05/30/2010 05:12 PM, John Ouzts wrote:
> I recently did a fresh UbuntuStudio 10.4 amd64 install.  I found that 
> I could only
> start qjackctl once without rebooting. When I attempted to close jackd 
> with the
> Quit button on qjackctl, the next attempt to run it results in the 
> following message:
>
> JACK compiled with System V SHM support.
> loading driver ..
> Enhanced3DNow! detected
> SSE2 detected
> apparent rate = 48000
> creating alsa driver ... hw:0|hw:0|256|2|48000|0|0|nomon|swmeter|-|32bit
> control device hw:0
> 23:08:49.544 JACK was stopped successfully.
> 23:08:49.544 Post-shutdown script...
> 23:08:49.545 killall jackd
> 23:08:49.549 JACK has crashed.
> jackd: no process found
> 23:08:49.993 Post-shutdown script terminated with exit status=256.
> 23:08:50.025 Could not connect to JACK server as client. - Overall 
> operation failed. -
> Unable to connect to server. Please check the messages window for more 
> info.
>
> Neither "sudo kill -9 <PIDs of jackd, qjackctl and qjackctl.bin>" nor 
> "sudo pkill -9 qjackctl"
> nor closing the terminal in which qjackctl was executed eliminates 
> this problem.
>
> Since this was a clean install with very little added beyond ambdec, 
> tetraproc and mhwaveedit,
> I don't have any explanation for this problem except bad karma between 
> the current UbuntuStudio
> and qjackctl. On one occasion when starting the reboot, I got an error 
> message asking if I
> wanted to wait for process Unknown to complete.
>
> The good side to this is that UbuntuStudio 10.4 boots up quickly.
>
> Does anyone have any ideas?
>
> Thanks,
> John
>
What output do you get when doing: lsof | grep snd



More information about the Linux-audio-user mailing list