Hi, This is my first response here. I imagine you're using realtime in jack? In the limits.conf file you need to allow realtime for a "audio" group. Then add your user to the audio group in this example. Something like this: @audio - rtprio 99 @audio - memlock unlimited @audio - nice -10 I'm not at my home machine so I don't know if these are the values I have. I just took them off some forum post. But this is approximately right. If this is even your problem that is. You can find instructions for this online. Maybe search for rt-linux ubuntu or something. I don't really have time at the moment to find them. I apologize in advance if this has nothing to do with your problem. Elliott <div class="gmail_quote">On Wed, Nov 4, 2009 at 5:20 PM, Tommy Hjalmarsson <<a href="mailto:tommy.h@bredband.net">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 -- 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>