Subject: Re: [linux-audio-user] alsa rtc patch in 2.4.23?
From: James Stone (stone1_AT_btinternet.com)
Date: Fri Jan 09 2004 - 11:52:51 EET
On Thu, Jan 08, 2004 at 12:38:51PM -0600, Jack O'Quin wrote:
> James Stone <stone1_AT_btinternet.com> writes:
>
> > I still had a problem when I tried to enable capabilities with the
> > patch for jack. When I ran jack with startjack as a normal user, it ran
> > for a short while then stopped (can't remember the error message now.. I
> > changed back to the unpatched kernel and now start jack as root). Any
> > hints on how to get this working would be appreciated.
>
> The messages would be helpful. You did this by applying the normal
> capabilities patch[1] by hand? I haven't tried that yet, because I've
> been experimenting with Linux Security Modules.
Yep thats right.. Don't know what went wrong as it seemed to work when
I tried it the second time. I think I had set RTC as a module in kernel
and not sure if it was loading properly.. Also I had not set my MB
chipset in the kernel so everything was slow, so that could have been
adding latency problems.. anyway, it is working now. I can't get as good
latencies as you but then I am using a SBLive! Seems relatively stable
in full duplex at 2 / 512.
>
> If you like to live dangerously, here's[2] a preliminary realtime LSM
> for 2.6 you can try. It works with an unpatched kernel, but you need
> kernel sources to build it and install it.
>
> [1] http://jackit.sourceforge.net/docs/faq.php#a5
> [2] http://www.joq.us/realtime
>
The module looks interesting. I think I will wait til it gets into the
kernel to try it though. (knowing me this will mean I will probably try
it out in the next few days!! ;) )
James
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