Re: unable to start qjackctl and ardour
John
thank you very much for your detailed answer. I am using the default
2.6.8 kernel in Debian. I tried the jackstart command and I got:
marcelo:~$ jackstart
jackstart: cannot get realtime capabilities, current capabilities are:
=ep cap_setpcap-ep
probably running under a kernel with capabilities disabled,
a suitable kernel would have printed something like "=eip"
So, I will follow your advice, and will re-compile my kernel with the
options you suggest. I was thinking to do it anyway in order to improve
performance. I will use the 2.6.16 kernel.
Regards,
Marcelo
On Mon, 2006-10-16 at 16:02 +1000, John O'Hagan wrote:
> On Monday 16 October 2006 09:36, Marcelo Chiapparini wrote:
> [...]
> >
> > I am running sarge. And I want to use ardour. I have installed ardour
> > and qjackctl. But the only way to run both, qjackctl to start the jack
> > deamon, and ardour, is as root. I am unable to star both programs as a
> > normal user. How can I fix this?
> [...]
>
> Jack can be run as a normal user by installing realtime-lsm-source and
> building the realtime-lsm module for your kernel by running module-assistant.
>
> Then you can run jack as a normal user when this module is loaded. (Sometimes
> I have had to reboot before the module will load successfully.) I think by
> default any user in the audio group can use it.
>
> However, for this to work you need
>
> CONFIG_SECURITY_CAPABILITIES=m
>
> in your kernel config. which is not the Debian default, so you may have to
> recompile your kernel.
>
> If you do, you may as well change the timer resolution to 1000 Hz, which is
> necessary for decent audio work:
>
> CONFIG_HZ_1000=y
> CONFIG_HZ=1000
>
> There is also the jackstart command, which has never worked for me...
>
> Anyway, once you have jack running as a normal user, ardour should run that
> way too.
>
> I know, it should be easier!
>
> HTH,
>
> John
>
>
--
Marcelo Chiapparini
chiappa@oi.com.br
Reply to: