9 Jul
2015
9 Jul
'15
5:35 p.m.
Hi list,
When I unplug my USB Audio interface while jackd is running on that very
card, jackd's CPU useage peaks and influences the whole operating system
(RT-kernel, jackd's priority is -11) becomes very unresponsive.
I know that I should not unplug it while jack is running, but sometimes
I forget that jack runs and this almost takes my computer down.
So I am wondering if there is any more elegant way of letting jack know
that a device has disappeared, or other solution to this.
Most looking forward to suggestions,
Peter
9 Jul
9 Jul
5:40 p.m.
On Thu, Jul 9, 2015 at 11:35 AM, Peter P. <peterparker(a)fastmail.com> wrote:
Hi list,
When I unplug my USB Audio interface while jackd is running on that very
card, jackd's CPU useage peaks and influences the whole operating system
(RT-kernel, jackd's priority is -11) becomes very unresponsive.
version of JACK? version of ALSA? kernel version?
6:02 p.m.
* Paul Davis <paul(a)linuxaudiosystems.com> [2015-07-09 11:40]:
On Thu, Jul 9, 2015 at 11:35 AM, Peter P.
<peterparker(a)fastmail.com> wrote:
Thanks Paul,
this is on Debian testing, with
jackd 0.124.1 tmpdir /dev/shm protocol 25
kernel 3.14-2-rt-amd64
libasound2 1.0.28-1
jackd is started via qjackctl with options
jackd -t2000 -dalsa -r44100 -p256 -n2 -Xseq -D -Chw:UA25 -Phw:UA25 -i2 -o2
best, P
Hi list,
When I unplug my USB Audio interface while jackd is running on that very
card, jackd's CPU useage peaks and influences the whole operating system
(RT-kernel, jackd's priority is -11) becomes very unresponsive.
version of JACK? version of ALSA? kernel version?
7:15 p.m.
* Peter P. <peterparker(a)fastmail.com> [2015-07-09 11:35]:
Hi list,
When I unplug my USB Audio interface while jackd is running on that very
card, jackd's CPU useage peaks and influences the whole operating system
(RT-kernel, jackd's priority is -11) becomes very unresponsive.
I know that I should not unplug it while jack is running, but sometimes
I forget that jack runs and this almost takes my computer down.
I did some more testing, and the 100% CPU usage does not happen always,
but in about 50% of the cases.
There are no messages from jackd itself, but dmesg tells
[unplugging the USB audio interface here]
[11277.146573] retire_capture_urb: 83 callbacks suppressed
[11277.313666] usb 2-1.2: USB disconnect, device number 6
[11277.314506] cannot submit urb (err = -19)
[11277.315458] cannot submit urb (err = -19)
[11277.316487] cannot submit urb (err = -19)
[11277.317489] cannot submit urb (err = -19)
[11277.318456] cannot submit urb (err = -19)
[11277.319459] cannot submit urb (err = -19)
[11277.320527] cannot submit urb (err = -19)
3426
days inactive
3426
days old
linux-audio-user@lists.linuxaudio.org
3 comments
2 participants
participants (2)
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Paul Davis -
Peter P.