On Sun, Feb 15, 2009 at 2:36 AM, Pieter Palmers <pieterp@xxxxxxx> wrote: > Mark Knecht wrote: >> >> On Sat, Feb 14, 2009 at 8:14 AM, Pieter Palmers <pieterp@xxxxxxx> wrote: >>> >>> Jonathan Gazeley wrote: >>>> >>>> Hi all, >>>> >>>> I'm trying to set up my Phonic Helix Board 24 on Fedora 10. I've added >>>> the CCRMA repository but I'm *not* running a CCMRA kernel. I have just >>>> used this repository to install ffado and jack. >>>> >>>> [jonathan@poseidon ~]$ uname -r >>>> 2.6.27.12-170.2.5.fc10.i686.PAE >>>> >>>> [jonathan@poseidon ~]$ rpm -q ffado >>>> ffado-2.0-0.6.rc1.fc10.ccrma.i386 >>>> >>>> Starting jack gives the output below. Running as root gives exactly the >>>> same output. I've made sure that all users have read/write permissions on >>>> the firewire port (chmod a+rw /dev/fw*) >>>> >>>> I'm a fairly experienced Linux user but I know very little about audio >>>> on Linux. Can anyone shed any light on this? I had the same Phonic device >>>> working on Fedora 8 some time ago but that computer is now a distant >>>> memory... >>>> >>>> Any help will be gratefully accepted! >>>> Thanks, >>>> Jonathan >>>> >>>> >>>> [jonathan@poseidon ~]$ jackd -d firewire >>> >>> Run jackd in realtime mode. >>> >>> Pieter >> >> Is his kernel even a real-time kernel? I don't get that from the uname >> output... > > What I mean is: > > jackd -R -d firewire > > That doesn't require a RT kernel. Don't expect FFADO to work properly when > jack doesn't run in realtime mode (-R). The same applies for ALSA or other > backends btw, but FFADO is particularly sensitive. > > Greets, > > Pieter > Right, and OP should not expect zero xruns if he isn't using a real-time kernel. There is a real rash lately of users trying to do real-time work without a real-time kernel. For some reason they put Jack support in MythTV and I've seen a couple of people there in the last few weeks that weren't even aware that there was a real-time kernel, much less actually using it, and they were complaining of xruns. - Mark _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
