Re: [LAU] Jack hanging when a usb soundcard is disconnected

On Sat, 17 Oct 2015 19:24:02 +0100 Will Godfrey <willgodfrey(a)musically.me.uk> wrote: > On Sat, 17 Oct 2015 13:58:37 -0400 > Ivica Ico Bukvic <ico(a)vt.edu> wrote: >> >> 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? > > a workaround is from a terminal type: > > pidof jackd > > you'll get a number such as 3772 > > then type > > kill -9 3772 >