Jackd + guitar: "timeouts and broken pipes"

Question

Hi friends! I'm trying to pass my electric guitar via any rack/effects (like Guitarix or Creox) with no luck. I've got this sound card:
01:06.0 Multimedia audio controller: Creative Labs [SB Live! Value] EMU10k1X
01:06.1 Input device controller: Creative Labs [SB Live! Value] Input device controller
I try with QJackCtl and invoking jackd from the terminal with any luck.
jackd -d alsa -C -P
jackd 0.121.3
Copyright 2001-2009 Paul Davis, Stephane Letz, Jack O'Quinn, Torben Hohn and others.
jackd comes with ABSOLUTELY NO WARRANTY
This is free software, and you are welcome to redistribute it
under certain conditions; see the file COPYING for details
could not open driver .so '/usr/lib/jack/jack_net.so': libcelt0.so.2: cannot open shared object file: No such file or directory
could not open driver .so '/usr/lib/jack/jack_firewire.so': libffado.so.2: cannot open shared object file: No such file or directory
JACK compiled with System V SHM support.
loading driver ..
creating alsa driver ... hw:0|hw:0|1024|2|48000|0|0|nomon|swmeter|-|32bit
control device hw:0
configuring for 48000Hz, period = 1024 frames (21.3 ms), buffer = 2 periods
ALSA: final selected sample format for capture: 16bit little-endian
ALSA: use 2 periods for capture
ALSA: final selected sample format for playback: 16bit little-endian
ALSA: use 2 periods for playback
jackd watchdog: timeout - killing jackd
[gabo@machina ~]$
This is the output from QJackCtl:
00:12:07.126 Client deactivated.
00:12:07.130 JACK is being forced...
cannot read server event (Success)
cannot continue execution of the processing graph (Bad file descriptor)
zombified - calling shutdown handler
cannot send request type 7 to server
cannot read result for request type 7 from server (Broken pipe)
cannot send request type 7 to server
cannot read result for request type 7 from server (Broken pipe)
00:12:07.339 JACK was stopped with exit status=1.
I can hear my guitar and record with Audacity, but when jackd enter into the escenario everything blows up. I read that nowadays almost any sound card will work with QJackCtl with the default options. I play with the parameters and sometimes jack refuse to start. With the default options on i can make it run, but i get no sound of the racks or guitar effects processors neither the guitar tuners that use jack takes the sound from the guitar. My line input is in capture via alsamixer, but still no luck. Any clue on this? I'm skipping steps?
Thanks in advance.
iamgabo

Answer 1

Hi!
groups && cat /proc/asound/cards && cat ~/.asoundrc && cat '/etc/security/limits.d/audio.conf' && jackd -v
adm disk lp wheel http network video audio optical storage power users polkitd vboxusers wireshark kismet
0 [Live ]: EMU10K1X - Dell Sound Blaster Live!
Dell Sound Blaster Live! at 0xcc00 irq 17
#pcm.upmix71 {
#type upmix
#slave.pcm "surround71"
#delay 15
#channels 8
pcm.!default {
type hw
card 0
ctl.!default {
type hw
card 0
# convert alsa API over jack API
# use it with
# % aplay foo.wav
# use this as default
pcm.!default {
type plug
slave { pcm "jack" }
ctl.mixer0 {
type hw
card 1
# pcm type jack
pcm.jack {
type jack
playback_ports {
0 system:playback_1
1 system:playback_2
capture_ports {
0 system:capture_1
1 system:capture_2
cat: /etc/security/limits.d/audio.conf: No such file or directory
I have a file called 99-audio.conf
cat /etc/security/limits.d/99-audio.conf
@audio - rtprio 99
@audio - memlock unlimited
Also i've seen some guys changing this file too:
cat /etc/security/limits.conf
# /etc/security/limits.conf
#Each line describes a limit for a user in the form:
#<domain> <type> <item> <value>
#Where:
#<domain> can be:
# - an user name
# - a group name, with @group syntax
# - the wildcard *, for default entry
# - the wildcard %, can be also used with %group syntax,
# for maxlogin limit
#<type> can have the two values:
# - "soft" for enforcing the soft limits
# - "hard" for enforcing hard limits
#<item> can be one of the following:
# - core - limits the core file size (KB)
# - data - max data size (KB)
# - fsize - maximum filesize (KB)
# - memlock - max locked-in-memory address space (KB)
# - nofile - max number of open files
# - rss - max resident set size (KB)
# - stack - max stack size (KB)
# - cpu - max CPU time (MIN)
# - nproc - max number of processes
# - as - address space limit (KB)
# - maxlogins - max number of logins for this user
# - maxsyslogins - max number of logins on the system
# - priority - the priority to run user process with
# - locks - max number of file locks the user can hold
# - sigpending - max number of pending signals
# - msgqueue - max memory used by POSIX message queues (bytes)
# - nice - max nice priority allowed to raise to values: [-20, 19]
# - rtprio - max realtime priority
#<domain> <type> <item> <value>
#* soft core 0
#* hard rss 10000
#@student hard nproc 20
#@faculty soft nproc 20
#@faculty hard nproc 50
#ftp hard nproc 0
#@student - maxlogins 4
* - rtprio 0
* - nice 0
@audio - rtprio 65
@audio - nice -10
@audio - memlock unlimited
jackd 0.121.3
There are the snaps for QJackCtl
Also, checkout this stuff that i've recorded with audacity, only from the line and nothing else
http://ompldr.org/vZ3A2eg
Thanks!
Last edited by iamgabo (2012-12-15 02:21:08)