-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 [EMAIL PROTECTED] schrieb: > hi again and thanks for your answers > >>>> i tried to recommended solution: >>>> >>>>>>>> looks like your /etc/security/limits.conf is not set properly. An >>>>>>>> Upgrade to studio seems to fail to set this, the install from DVD does >>>>>>>> this OK. This file needs to have the following 3 lines at its end: >>>>>>>> >>>>>>>> @audio - rtprio 99 >>>>>>>> @audio - memlock 860000 >>>>>>>> @audio - nice -10 >>>> but this didn't seem to make a difference. is there something else i >>>> need to do? >> what says: >> >> #uname -a > > Linux
most strange that is: if I ask uname -a I get: Linux zettberlin.msi 2.6.22-14-rt #1 SMP PREEMPT RT Mon Oct 15 01:05:51 GMT 2007 i686 GNU/Linux The part "PREEMPT RT" tells, that I run a kernel that jack can use OK... >> and: >> >> >> #cat /etc/groups|grep audio > > No such file or directory Sorry for the typo :-) the file is *group* NOT group*s* it should yield something like this: audio:x:29:jason >> If you got the rt-kernel running and if you are in group audio, >> everything should be at its best... > > i don't understand here what you are referring to with "group audio." > could you please explain? In Linux you have certain priviledges as: 1.) a user (quite little but sufficient for dayly work). 2.) a member of one or more user-groups To make audioapps run with the needed power in Linux smart people invented a machanism that gives you, as the normal user certain priviledges to access your computers hardware. To allow this the usergroup "audio" is used: audio:x:29:jason in the file /etc/group says, that the normal user jason is member of group audio. @audio - rtprio 99 @audio - memlock 860000 @audio - nice -10 in the file /etc/security/limits.conf says, that members of group audio are allowed to run software with realtime-priority 99, lock down 860000 bytes of memory and start processes that are 10 stages "more importent" then normal processes running with the default nice -0. Those priviledges can only be granted this way, if your running kernel allows it. Thats why you need to run the RT-Kernel from Ubuntu Studio/Universe and you need to be in group audio (can be set with the user-tool in the system-preferences menu), to have fun with jack/Linux Audio. that helps? ;-) > with best regards > jason > -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFHJGRP1Aecwva1SWMRAjoAAJ4oro3KgSQASNX1idmP4i+UUI7PWQCggXFo Smt/AmmaedT3ueN6bzi/8Cg= =klDg -----END PGP SIGNATURE----- -- Ubuntu-Studio-users mailing list Ubuntu-Studio-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users