So, you need to have rt rights. Follow the info in this webpage <a href="https://help.ubuntu.com/community/UbuntuStudioPreparation">https://help.ubuntu.com/community/UbuntuStudioPreparation</a> You will need to add your use to an audio group and give to that group RT privileges. <div class="gmail_quote">2009/11/5 Tommy Hjalmarsson <<a href="mailto:tommy.h@bredband.net">tommy.h@bredband.net</a>> <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> <div bgcolor="#ffffff" text="#000000"><div><div></div><div class="h5"> Eric Hedekar wrote: <blockquote type="cite"> <div class="gmail_quote">On Wed, Nov 4, 2009 at 4:20 PM, Tommy Hjalmarsson <<a href="mailto:tommy.h@bredband.net" target="_blank">tommy.h@bredband.net</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">I have installed UbSt 9,10 64 bit. And I can start Jack and Ardour if I have the starter for them on my desktop and write gksudo (and I don't need to write my root password, thats strange) in preferences/commando. The shorter version, Jack work when I'm are "root", and it is honky dory, it's working anyway. But................... I can't however not connect as a "client" to the Jack server with Jack as "user", only as "root". The error message points on that Jack can't connect as a client. And this last line (not in red color): /(<unknown>:13353): Gtk-WARNING **: Theme directory scalable/animations of theme Ny_hjalle has no size field/ hjalle=me/user. I don't get the error message as root, *and I dont know if it is a big error*. If I somehow have made a strange user "Ny_hjalle" for the sound server, in what config file can i find it? (I cant find Ny_hjalle in my user settings) Must I make a Jack user group with "user rights " or....what? 9,10 sounds better than 9.04 however on my laptop.....but only as root:) /Tommy Hjalmarsson </blockquote> <div> Tommy, it's not the last error message that should be looked at, but rather the first error message. If you can't determine which error message is first, copy and paste the entire output of the messages windown on an attempted jack start (not using root). If it's a huge output (may be if you have verbose messages turned on) you may want to paste it in a pastebin like <a href="http://pastebin.ubuntu.com" target="_blank">http://pastebin.ubuntu.com</a> then post the link here. -Eric</div> </div> </blockquote></div></div> Ok here is the text: 02:23:24.598 Patchbay deactivated. 02:23:24.598 Statistics reset. 02:23:24.624 ALSA connection graph change. 02:23:24.819 ALSA connection change. 02:23:32.753 Startup script... 02:23:32.755 artsshell -q terminate sh: artsshell: not found 02:23:33.159 Startup script terminated with exit status=32512. 02:23:33.160 JACK is starting... 02:23:33.161 /usr/bin/jackd -R -dalsa -dhw:0 -r44100 -p1024 -n3 no message buffer overruns jackd 0.116.1 Copyright 2001-2005 Paul Davis and others. jackd comes with ABSOLUTELY NO WARRANTY This is free software, and you are welcome to redistribute it under certain conditions; see the file COPYING for details JACK compiled with System V SHM support. cannot use real-time scheduling (FIFO at priority 10) [for thread -647842064, from thread -647842064] (1: Operation not permitted) cannot create engine 02:23:33.184 JACK was started with PID=15696. 02:23:33.188 JACK was stopped successfully. 02:23:33.189 Post-shutdown script... 02:23:33.190 killall jackd jackd: ingen process hittades 02:23:33.604 Post-shutdown script terminated with exit status=256. 02:23:35.261 Could not connect to JACK server as client. - Overall operation failed. - Unable to connect to server. Please check the messages window for more info. (<unknown>:15688): Gtk-WARNING **: Theme directory scalable/animations of theme Ny_hjalle has no size field End And this i my problem, I didn't see it earlier: cannot use real-time scheduling (FIFO at priority 10) [for thread -647842064, from thread -647842064] (1: Operation not permitted) But not as root This is a Ubuntu 9,10 64 bit installtion with Ubuntu Studio 64 bit package and rt kernel installed with Synaptik. So Elliott Barcikowski guess that I don't have the right to use realtime kernel as user, only as root is probably right .So the problem isn't Jack. </div> -- Ubuntu-Studio-users mailing list <a href="mailto:Ubuntu-Studio-users@lists.ubuntu.com">Ubuntu-Studio-users@lists.ubuntu.com</a> Modify settings or unsubscribe at: <a href="https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users" target="_blank">https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users</a> </blockquote></div> -- Fagote / Contrafagote Bassoon / Contra-bassoon <a href="http://myspace.com/ricardolameiro">http://myspace.com/ricardolameiro</a>