[LAU] Jack hanging when a usb soundcard is disconnected

[Will Godfrey]

On Sat, 17 Oct 2015 19:24:02 +0100
Will Godfrey <willgodfrey at musically.me.uk> wrote:

> On Sat, 17 Oct 2015 13:58:37 -0400
> Ivica Ico Bukvic <ico at vt.edu> wrote:
> 
> > Hi all,
> > 
> > This is a long-standing problem. While it is not intentional, sometimes 
> > newcomers to jack on Linux tend to pull out the soundcard (USB) before 
> > shutting down jack. This results in jack permanently hanging to the 
> > point where one has to force-shutdown the machine. That is at least the 
> > case on Ubuntu 14.04 (and was on 12.04) with lowlatency kernel. Trying 
> > to do sudo killall -9 jackd makes no difference. Essentially, it is 
> > impossible to destroy the process and reboot hangs because of it.
> > 
> > Any idea what can be done to minimize this problem or alleviate it 
> > altogether?
> > 
> > Best,
> > 
> > Ico
> 
> 
> a workaround is from a terminal type:
> 
> pidof jackd
> 
> you'll get a number such as 3772
> 
> then type
> 
> kill -9 3772
> 


Hmm, just reread. All I can say is it works for me and with just kill and no
sudo :o


-- 
Will J Godfrey
http://www.musically.me.uk
Say you have a poem and I have a tune.
Exchange them and we can both have a poem, a tune, and a song.