to launch a script to restart alsa after boot of kxstudio

plotino · 05-19-2014, 07:49 AM

Hello
Due to potential uncorrect boot of alsa and jackd in KXStudio, i need to restart alsa with
$sudo alsa force-restart
after the system has completed its boot sequence.
HOw to do it?
if a write a bash scriopt and put in /etc/init.d/,
how to know if it will processed after completion of the boot preocderure?

thanx

plotino

schneidz · 05-19-2014, 07:52 AM

would one of these options help you:
http://www.linuxquestions.org/questi...3/#post5106743

ondoho · 05-19-2014, 11:42 AM

good advice from schneidz, but shouldn't we take a step back and try to solve the underlying problem?

are you using kxstudio as a standalone distribution or as a collection of apps installed into an already installed linux system?

plotino · 05-30-2014, 03:16 PM

Im using kxstudio as stand alone distro

ondoho · 05-31-2014, 01:02 AM

In that case i do not know if schneidz' advice applies because i do not know what sort of start-up kxstudio uses (whether it uses /etc/rc.local).
just tell us what major distro kxstudio is based on.

if you want to solve the underlying problem, you have to expand on this:

Quote:

Originally Posted by plotino

Due to potential uncorrect boot of alsa and jackd in KXStudio, i need to restart alsa

because I don't see how this could go wrong on a preconfigured multimedia production distro.

plotino · 06-04-2014, 02:40 AM

ondoho, it deals with ir_enable option of alsa. fir some unknown reasons, in the normal start up process of kxstudio, the ir interface of creative livedrive is not working.
but if I restart alsa after boot, ir interface starts working.

ondoho · 06-05-2014, 01:27 PM

well then i guess schneidz advice is the way to go.
you might need to add a delay, maybe sth like

Code:

( sleep 5 && alsa force-restart ) &

and then it really depends where you put the script - in rc.local you wouldn't need sudo.
but, to further help with that some information requested is still missing.

plotino · 06-08-2014, 01:09 PM

ondoho,
rc.local is actually present in kxstudio distro.
so i have to put the call to script here, isnt it?
i think it's based on ubuntu distro.
if you need more info to help me, please ask

ciao

plotino · 06-08-2014, 03:36 PM

i have tried to put "alsa force-reload" in rc.local
ma the ir interface dont seem to work anyway ..
how to know when the script in rc.local have been execute during the boot process?
is there any log for that?

thanx

schneidz · 06-09-2014, 08:40 AM

i think so but i dont know what it is (i think it goes to ~/.xsession-errors). i usually do something like this:

Code:

date >> /home/schneidz/rc-local.test && echo calling program from rc.local >> /home/schneidz/rc-local.test

plotino · 06-10-2014, 07:10 AM

Quote:

Originally Posted by schneidz

i think so but i dont know what it is (i think it goes to ~/.xsession-errors). i usually do something like this:

Code:

date >> /home/schneidz/rc-local.test && echo calling program from rc.local >> /home/schneidz/rc-local.test

sorry not so expert about shell comands ...

let me understand ...

&& is a sqeuence of comands (the second will be run only the first one is executed seuccessfully)

date >> is appending date to rc-local.test

echo calling program from rc.local is aappending the string "calling program from rc.local" to file rc-local.test

i suppose after that i need to rename rc-local.test in rc.local
but im still wondering where the date and log string will be output after boot ....

schneidz · 06-10-2014, 08:02 AM

this is the file it would create for me:
/home/schneidz/rc-local.test

generally speaking it would be: /home/<user>/whatever/floats/your/boat

it just gives a display of whats going on under-the-hood.

plotino · 06-10-2014, 01:16 PM

but if the file is under your home dir, how can the system launch it automatically?

ondoho · 06-10-2014, 01:20 PM

Quote:

Originally Posted by plotino

i have tried to put "alsa force-reload" in rc.local

how exactly did you do that? did you mark it executable?

Quote:

ma the ir interface dont seem to work anyway ..

me no savvy???

you can add the line schneidz suggested into that script (the one in /etc/rc.local), that would create a file in your home directory if the script was executed.

schneidz · 06-10-2014, 01:33 PM

Quote:

Originally Posted by plotino

but if the file is under your home dir, how can the system launch it automatically?

sorry, i should explain that i add a line like that to the end of my /etc/rc.local. when the system boots up it executes the lines in /etc/rc.local and the last line would instruct it to append output to a file in my home directory that i can then check the output for errors and such.