23 Mar
2013
23 Mar
'13
1:50 p.m.
On 03/23/2013 12:38 PM, Fryderyk Dziarmagowski wrote:
Jeremy,
sound like sudo is not a perfect tool for you, try
su -l pi -c/home/pi/bin/drumpad
instead of it.
Freddy
Hello Freddy,
Thanks but unfortunately this yields the same results. Jack doesn't
start and complains that it can't run in realtime mode.
I could of course disable realtime mode but I don't want that, I need
the strict scheduling otherwise I quickly get xruns on the Raspberry Pi.
Jeremy
23 Mar
23 Mar
2:52 p.m.
New subject: Trying to run jackd from udev
On Saturday 23 March 2013 08:49:57 Jeremy Jongepier wrote:
On 03/23/2013 12:38 PM, Fryderyk Dziarmagowski wrote:
Just as a test, can you simply sudo to bash and then do things by hand to see
if anything there fails? Or did I miss you already trying that?
Jeremy,
sound like sudo is not a perfect tool for you, try
su -l pi -c/home/pi/bin/drumpad
instead of it.
Freddy
Hello Freddy,
Thanks but unfortunately this yields the same results. Jack doesn't
start and complains that it can't run in realtime mode.
I could of course disable realtime mode but I don't want that, I need
the strict scheduling otherwise I quickly get xruns on the Raspberry Pi.
Jeremy
all the best,
drew
3:03 p.m.
New subject: Trying to run jackd from udev
On 03/23/2013 02:52 PM, drew Roberts wrote:
Just as a test, can you simply sudo to bash and then
do things by hand to see
if anything there fails? Or did I miss you already trying that?
This works.
I think it's PAM related. I'll muck around the PAM config files.
Jeremy
3:56 p.m.
New subject: Trying to run jackd from udev
On Saturday 23 March 2013 10:03:22 Jeremy Jongepier wrote:
On 03/23/2013 02:52 PM, drew Roberts wrote:
There might be some help in the Rivendell community, on the mailing lists or
the irc channel on freenode.
I seem to recall info on starting jack as a user from init scripts in the
past.
Just as a test, can you simply sudo to bash and
then do things by hand to
see if anything there fails? Or did I miss you already trying that?
This works.
I think it's PAM related. I'll muck around the PAM config files.
Jeremy
all the best,
drew
24 Mar
24 Mar
1:47 p.m.
New subject: Trying to run jackd from udev
On 03/23/2013 03:03 PM, Jeremy Jongepier wrote:
On 03/23/2013 02:52 PM, drew Roberts wrote:
it is. edit /etc/pam.d/su and make sure there's a line:
session required pam_limits.so
on debian it's commented out by default. and su does not set/unset limit
required for RT operation.
As for starting jack from udev. I just run 'dbus-triggerd' [1] as user.
No pam-hacking required :) dbus-triggerd triggers shell-commands when
something happens on dbus (e.g. audio-device connected/disconnected). An
example how to put it all together is:
http://gareus.org/blog/jack2dbus
best,
robin
[1] http://gareus.org/oss/dbustriggerd/
Just as a test, can you simply sudo to bash and
then do things by hand
to see
if anything there fails? Or did I miss you already trying that?
This works.
I think it's PAM related. I'll muck around the PAM config files.
2:24 p.m.
New subject: Trying to run jackd from udev
On 03/24/2013 01:47 PM, Robin Gareus wrote:
it is. edit /etc/pam.d/su and make sure there's a
line:
session required pam_limits.so
on debian it's commented out by default. and su does not set/unset limit
required for RT operation.
Hello Robin,
I just set up a wrapper script following Ralf's advise but I think this
option is more elegant so you win the Stroopwafel this time :) So many
thanks, I'll settle with this solution.
As for starting jack from udev. I just run
'dbus-triggerd' [1] as user.
No pam-hacking required:) dbus-triggerd triggers shell-commands when
something happens on dbus (e.g. audio-device connected/disconnected). An
example how to put it all together is:
http://gareus.org/blog/jack2dbus
I've looked at this option but I prefer using Jack1. I could test with
Jack2 but then I have to recompile it again because I only have a deb
with dbus disabled. I'm using the Raspberry Pi without X and in order to
get that running with Jack2 I was advised to compile without the --dbus
option to avoid any hackery to get Jack2 going.
Regards,
Jeremy
best,
robin
2:42 p.m.
New subject: Trying to run jackd from udev
On 03/24/2013 02:24 PM, Jeremy Jongepier wrote:
This works just fine with jack1, too. dbus-tiggerd just launches
commands or shell scripts. It's completely independent from jack's dbus
stuff.
Though in my case I'm using dbus-tiggerd to [launch a script to] send
dbus messages to jack2 for things such as backend switching..
Anyway if you just want to start it, a udev rule will do the trick as well.
robin
On 03/24/2013 01:47 PM, Robin Gareus wrote:
Mmh lekker stroopwafeltjes!
it is. edit /etc/pam.d/su and make sure
there's a line:
session required pam_limits.so
on debian it's commented out by default. and su does not set/unset limit
required for RT operation.
Hello Robin,
I just set up a wrapper script following Ralf's advise but I think this
option is more elegant so you win the Stroopwafel this time :) So many
thanks, I'll settle with this solution. As for
starting jack from udev. I just run 'dbus-triggerd' [1] as user.
No pam-hacking required:) dbus-triggerd triggers shell-commands when
something happens on dbus (e.g. audio-device connected/disconnected). An
example how to put it all together is:
http://gareus.org/blog/jack2dbus
I've looked at this option but I prefer using Jack1.
2:56 p.m.
New subject: Trying to run jackd from udev
On 03/24/2013 02:42 PM, Robin Gareus wrote:
This works just fine with jack1, too. dbus-tiggerd
just launches
commands or shell scripts. It's completely independent from jack's dbus
stuff.
Though in my case I'm using dbus-tiggerd to [launch a script to] send
dbus messages to jack2 for things such as backend switching..
Anyway if you just want to start it, a udev rule will do the trick as well.
robin
Then I'll take a look at it again because I'd also like a script to run
when I unplug the device. This can be done with udev too but I think
using dbus is easier.
Jeremy
23 Mar
23 Mar
4:32 p.m.
New subject: Trying to run jackd from udev
On Sat, March 23, 2013 5:49 am, Jeremy Jongepier wrote:
On 03/23/2013 12:38 PM, Fryderyk Dziarmagowski wrote:
Just checking the obvious, jackd does run in real time when started from a
login shell?
--
Len Ovens
www.OvenWerks.net
Jeremy,
sound like sudo is not a perfect tool for you, try
su -l pi -c/home/pi/bin/drumpad
instead of it.
Freddy
Hello Freddy,
Thanks but unfortunately this yields the same results. Jack doesn't
start and complains that it can't run in realtime mode.
I could of course disable realtime mode but I don't want that, I need
the strict scheduling otherwise I quickly get xruns on the Raspberry Pi.
24 Mar
24 Mar
1:31 p.m.
New subject: Trying to run jackd from udev
On 03/23/2013 04:32 PM, Len Ovens wrote:
Just checking the obvious, jackd does run in real time
when started from a
login shell?
Hello Len,
Yes it does run from a login shell and it does run if I log in as root
and run the command that I've added to the udev rule.
Jeremy
4264
days inactive
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linux-audio-user@lists.linuxaudio.org
9 comments
5 participants
participants (5)
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drew Roberts -
Jeremy Jongepier -
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Robin Gareus -
Robin Gareus