[linux-audio-user] Ardour sound output problems

Does anyone have any useful insights into why ardour (0.99) so often starts up with no sound? - particularly if the last session was kicked out by jack (0.100.7). When it works it will run for a whole session, but I am having to reboot a little too often to get sound back for my liking. Restarting jack or alsa alone does not usually sort this. I am at such a loss to know how to debug this sort of problem The reproducible error is that jack kicks out ardour after more than 3 minutes recording. No sound out of any other audio application, even after restarting alsa. Usually at this point logging in/out does not help either and I have to reboot to get sound back. I have checked all the obvious things like channel inputs and outputs. However it is not always as predictable as this. I am using rather low-end hardware which may explain some things, like the short recording window. I think I have been fairly thorough with my system configuration, but there are so many variables to take into account. The one unusual thing I am doing at the moment is running rtlimits with positive nice values for non audio apps rather than negging the audio ones. Whether that is actually making any difference to anything is rather hard to tell at this stage. Linux xingta 2.6.16.5-realtim #1 PREEMPT Tue Apr 18 03:20:06 BST 2006 i686 GNU/Linux model name : Pentium III (Katmai) cpu MHz : 499.120 MemTotal: 320792 kB SwapTotal: 2000052 kB 0 [FM801AU ]: FM801 - ForteMedia FM801-AU ForteMedia FM801-AU at 0x1800, irq 10 Having to reboot after every take is a bit of a PITA. The problem seems to be ardour specific, but I am largely in the dark. What I could really do with is some guidance on how to go about troubleshooting and/or finding methods of getting the sound output back that do not involve rebooting. -- cheers, tim hall http://glastonburymusic.org.uk/tim