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Old 10-04-2005, 05:26 AM   #1
solar1951
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Registered: May 2005
Location: France
Distribution: Ubuntu Feisty and Mint Cassandra
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JACK realtime capabilities


Mandrake 10.1: KDE 3.2.3 ;Kernel 2.6.8.1-12mdk

Have installed Jack from rpm's and using GUI to run get following errors

11:22:12.862 Statistics reset.
11:22:12.872 Could not open ALSA sequencer as a client. MIDI patchbay will be not available.
ALSA lib seq_hw.c:446snd_seq_hw_open) open /dev/snd/seq failed: No such file or directory
11:22:16.841 Startup script...
11:22:16.841 artsshell -q terminate
11:22:17.183 Startup script terminated with exit status=256.
11:22:17.184 JACK is starting...
11:22:17.185 /usr/bin/jackstart -R -dalsa -dhw:0 -r48000 -p1024 -n2
11:22:17.215 JACK was started with PID=9328 (0x2470).
jackstart: cannot get realtime capabilities, current capabilities are:
=ep cap_setpcap-ep
probably running under a kernel with capabilities disabled,
a suitable kernel would have printed something like "=eip"
11:22:17.281 JACK was stopped with exit status=1.
11:22:19.436 Could not connect to JACK server as client.

Can anyone help with these 2 problems of enabling realtime capabilities in my kernel and for the ALSA sequencer problem - I assume they are related.

Thanks
 
Old 10-04-2005, 10:14 PM   #2
tkedwards
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Did you install off the Mandriva RPMs? You should as they were built for and tested on Mandriva.

Secondly have you started the server properly? http://jackit.sourceforge.net/docs/faq.php#q8

Realtime scheduling can be enabled http://jackit.sourceforge.net/docs/faq.php#q53 but I'd concentrate on getting Jackit working first before fiddling around w/ that (its not required to run the program but it seems to be highly recommended to get good results according to their FAQ).
 
Old 10-07-2005, 07:56 AM   #3
solar1951
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Registered: May 2005
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Distribution: Ubuntu Feisty and Mint Cassandra
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Quote:
Originally posted by tkedwards
Did you install off the Mandriva RPMs? You should as they were built for and tested on Mandriva.

Secondly have you started the server properly? http://jackit.sourceforge.net/docs/faq.php#q8

Realtime scheduling can be enabled http://jackit.sourceforge.net/docs/faq.php#q53 but I'd concentrate on getting Jackit working first before fiddling around w/ that (its not required to run the program but it seems to be highly recommended to get good results according to their FAQ).
I only ever install via urmpi and Mandake rpms as I wanted to avoid problems - doen't seem to work all the time tho !

I am the only user, apart from me as root, so the answer is yes, I did start the server properly !

What next, anybody ?
 
  


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