Re: ? Realtime Capable 2.6.8 Kernel
On Thu, Apr 28, 2005 at 08:13:03PM +0200, Nicos Gollan wrote:
> On Thursday April 28 2005 17:33, Thomas H. George wrote:
> > I want to use jack but jackstart says my kernel has realtime
> > capabilities disabled. I compiled the kernel from the current Debian
> > kernel-source-2.6.8 and I have carefully reviewed the options displayed
> > by make menuconfig but can not recognize any option to enable realtime
> > capabilities. Where is it?
>
> Under "Security options", you need to enable:
> - Default Linux Capabilities (SECURITY_CAPABILITIES) as a module
> - NSA SELinux Development Support (SECURITY_SELINUX_DEVELOP).
>
> Then you install the realtime-lsm-source package and build it along with a
> suitable kernel.
>
> To use the module, just install the realtime-lsm package and make sure a
> proper group is set in /etc/default/realtime (29 (audio) is usually fine,
> just add your user to that group). Running "/etc/init.d/realtime start"
> should then enable the module and jackd should be happy.
I did all of this and lsmod shows the realtime module is installed but
jack is not completely happy. That is, working a root, I issued the
command jackstart and got the response
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"
On the other hand working as a regular user from a console in xwindows
the command qjackctl results in "Could not open ALSA sequencer as a client.
Midi patch bay will not be available." but I can open Ardour which
reports using jack for recording and playback.
Tom
Reply to: