grant centauri said : > Hi Karsten, > > I've done all of that, and checked multiple times. I'll try again with your > values, but I'm anticipating the same problem. > > Thanks, > > Grant
oh, but you're sure you logged out and back in? thats a crucial part :) > > > Hi Grant, > > the problem is you need to set up /etc/security/limits.conf to allow > you to create processes with realtime permission. Its easy: add this > line at the end of the file, log out and back in and you should be > fine. > > @audio - rtprio 99 > @audio - memlock unlimited > @audio - nice -19 > > ah, make sure you are part of 'audio' group too (which you probably > are if you already can use audio devices without rt-prio). > > Greetings, > > Karsten > > > > grant centauri said : > > Hello. > > > > I'm not entirely new to Pure:Dyne, and I've been hacking around with linux > > for > > over 2 years now so I'm generally able to solve problems on my own, with > > help > > > of internet discussion of course, but I can't seem to get this one. > > > > I have the same problem on another machine I've tried installing a realtime > > kernel on as well. > > > > > I followed the instructions for a full install of pure:dyne; fresh debian > > install, updated repositories, updated apt, downloaded the realtime kernel > > (2.6.29.3-rt14-pure-686 #1 SMP PREEMPT RT), booted into it and uninstalled > > the > > > standard kernel, and proceeded to install all of the pure:dyne standard > > packages. > > > > Once that was done I thought I'd try to start up jack in realtime and play > > > around a bit to make sure things worked. However when I try to start jack I > > get this error message (the same as on the other machine with a realtime > > kernel, these are kernels I did NOT compile myself, but downloaded from > > > repositories): > > > > JACK compiled with System V SHM support. > > cannot use real-time scheduling (FIFO at priority 10) [for thread > > -1212373328, > > from thread -1212373328] (1: Operation not permitted) > > > cannot create engine > > > > If I run the same command as root, jack starts fine. So the realtime > > capabilities seem to be there. I know the first answer will be "Edit your > > /etc > > > /security/limits.conf and add the @audio rtprio and so on..." I've done > > this, > > and it doesn't help. I think it has something to do with memory, and not > > the > > audio preemption. The only relevant thing I could find had something to do > > > with the realtime_lsm module, which I tried building for this kernel, but it > > didn't work. So I'm really unsure of what to do here. When I run > > modprobe, I > > don't get any results for a realtime module of any kind. But why wouldn't > > the > > > pure:dyne kernel be compiled correctly to support realtime? I just don't > > get > > it. Perhaps its a simple permissions problem (something to do with > > /dev/shm?) > > but I can't figure it out. If anyone has any insights or advice, please > > let me > > > know. I'd love to have realtime capabilities without using a liveCD. > > > > Thanks, > > > > Grant > > > > > > --- > [email protected] > irc.goto10.org #puredyne -- karsten gebbert -- krgn.goto10.org
signature.asc
Description: Digital signature
--- [email protected] irc.goto10.org #puredyne
