[LAU] an rt kernel for ubuntu 8.10 ?

Jostein Chr. Andersen jostein at vait.se
Sat Feb 14 10:45:56 EST 2009

Hi Dave,

Den Saturday 14 February 2009 15:45:58 skrev Dave Phillips:
> Jostein Chr. Andersen wrote:
> > ... I have no more xruns (using 2.6.27-3-rt on 8.10 with KDE 4.2
> > desktop) and the latency I use when recording is normally 1.45 ms on
> > my lap top with acpi off. The USB card is an old M-audio Mobile PreUSB
> > (44100 16-bit). I do not record often with on my lap top, but
> > everything works fine when I have to use it.
> >
> >
> > So you might give the 2.6.27-3-rt the last chance with some help from
> > jackdmp 1.9 (the upcoming jack 2.0). I have used jackdmp around 11
> > months now and it's IMO the only choice on a 64 bits machine with more
> > than one core. I also use jackdmp on my studio machine and are really
> > happy with it.
> >
> >
> > I hope this helps.
> Hi Jostein,
> This is interesting. Did you patch the rt sources at all or are you
> running the kernel as it came from the repo ? Did you simply drop-in the
> jackdmp version of jackd (./waf configure --prefix=/usr) or was any
> other action required ?

I use the repo RT kernel without patches but , but almost all the other music 
related stuff are compiled from sources. I also pass acpi=off to the kernel 
parameter (2.6.27-3-rt) in /boot/grub/menu.lst. 
My use of waf  does probably do the same as you suggested, here is my 
configure recipe:

PREFIX=/usr ./waf configure
./waf build
sudo ./waf install.

This way, 1.9 will replace your current jack installation. Some programs might 
probably complain because 1.9 do have a slightly different API, but my Ardour 
2.7.1, Rosegarden 1.7.2, CVS version of the Linuxsampler apps and all 
important LV2 and LADSPA plugins works just fine, so I'm happy.


More information about the Linux-audio-user mailing list