Sweet - I'll give it a shot as soon as I get home - Thanks again! ~holotone <div>On 11/12/07, Chris Dawson <<a href="mailto:xrdawson@gmail.com"> xrdawson@gmail.com</a>> wrote:<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">strace is "system call trace."  It simply runs a program within a harness that outputs all the system calls made.  In this case, it will output and tell you where the jackd program is dying.  In my case I saw that it was dying when it tried to open and write to the directory. It is absolutely harmless to run strace, it just outputs a lot of extra information you probably won't understand, but would be useful. If you'd like run it and send me the output.  You can do this: strace -ooutput.txt /usr/bin/jackd -R -u -dalsa -dhw:0 -r44100 -p1024 -n2 & Then, it'll either die on its own, or you'll need to run: killall -9 strace jackd ...to kill it.  Then, send me the output.txt file and I can look for something suspicious.  Or, you can check it out youself and perhaps you can figure it out. Chris On Nov 12, 2007 8:56 PM, <a href="mailto:holotone@gmail.com">holotone@gmail.com </a> <<a href="mailto:holotone@gmail.com">holotone@gmail.com</a>> wrote: > My output shows exactly the same permissions: > > holotone@iceman:~$ ls -l /dev | grep shm > drwxrwxrwt 2 root   root          40 2007-11-12 10:31 shm > > Not sure I understand what strace is, and I'd hate to start executing > commands that I don't understand. > > Thanks for your help! > > > > ~holotone > > On 11/12/07, Chris Dawson <<a href="mailto:xrdawson@gmail.com">xrdawson@gmail.com</a>> wrote: > > Oh, you know what, I recall that when I upgraded Ubuntu-Studio did not > > properly set the permissions of /dev/shm, the shared memory directory. > > Can you verify the permissions of that?  Mine is > > > > cdawson@djavan:~$ ls -l /dev | grep shm > > drwxrwxrwt 2 root   root          40 2007-11-12 14:37 shm > > > > Does yours show the same? > > > > You might also run jack under strace, like so: > > > > strace /usr/bin/jackd -R -u -dalsa -dhw:0 -r44100 -p1024 -n2 > > > > I think this is where I discovered it could not open the shm directory > > and create files there. > > > > Chris > > > > On Nov 12, 2007 5:29 PM, <a href="mailto:holotone@gmail.com">holotone@gmail.com</a> <<a href="mailto:holotone@gmail.com">holotone@gmail.com </a>> wrote: > > > holotone@iceman:~$ uname -r > > > > > > 2.6.22-14-rt > > > > > > Yup, looks like I'm good to go - Wonder why I can't enable realtime? > > > > > > Thanks! > > > > > > ~holotone > > > > > > > > > > > > On 11/12/07, Chris Dawson <<a href="mailto:xrdawson@gmail.com"> xrdawson@gmail.com</a>> wrote: > > > > If I recall correctly, by default my upgrade did not include the > > > > realtime kernel.  I had to apt-get that myself, and then when I > > > > rebooted I could run jack with realtime.  See if that works for you. > > > > You can see if you have the realtime kernel by doing this: > > > > > > > > cdawson@djavan:~$ uname -r > > > > 2.6.22-14-rt > > > > > > > > If you don't see rt, then you are not running realtime. > > > > > > > > Chris > > > > > > > > > > > > On Nov 12, 2007 4:18 PM, <a href="mailto:holotone@gmail.com">holotone@gmail.com</a> <<a href="mailto:holotone@gmail.com"> holotone@gmail.com</a>> > wrote: > > > > > So I bit the bullet this weekend and chose Ubuntu Studio for my > Gutsy > > > > > upgrade and... Wow! Seriously well done..! I can finally feel > confident > > > > > using Linux as my primary music production OS..! > > > > > > > > > > One question, one gripe, and one solution: > > > > > > > > > > Question: How do I enable realtime in jack? From my understanding, > > > Ubuntu > > > > > Studio includes the realtime kernel, but whenever I check the > realtime > > > box > > > > > in Jack, it won't start - Any ideas? > > > > > > > > > > Gripe: I looooove the theme with a few exceptions, the largest of > which > > > is > > > > > being able to see the fine lines between devices and apps in > qjackctl's > > > > > connections panel. Any suggestions for a fix? > > > > > > > > > >  Solution: I couldn't for the life of me get Qsampler to work - Kept > > > saying > > > > > every time I started it that "Server could not be started". A bit of > > > > > research turned up that linuxsampler, the sampler that Qsampler is a > GUI > > > > > front end for, is not included w/ Ubuntu* due to licensing issues. > Some > > > more > > > > > digging around turned up these Ubuntu debs for linuxsampler: > > > > > <a href="http://ubuntu2.cica.es/ubuntu/ubuntu/pool/universe/l/linuxsampler/">http://ubuntu2.cica.es/ubuntu/ubuntu/pool/universe/l/linuxsampler/ </a> > > > > > > > > > > One quick double click and qsampler is now working flawlessly! > Perhaps > > > there > > > > > should be a note about this somewhere? It took me aages to figure > out. > > > > > > > > > > Thanks again for putting together a great distro! > > > > > > > > > > -- > > > > > ~cole > > > > > <a href="http://holotone.net/">http://holotone.net/</a> > > > > > > > > > > > > > > > > > -- > > > 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"> https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users</a> > > > > > > > > > > -- > > 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">https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users </a> > > -- > 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"> https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users</a> > > -- 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">https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users</a></blockquote></div>