If you are running compiz/beryl try turning it off. I had a devil of a time getting jack-audio in feisty to work without xruns (which basically results in audio samples being dropped). Despite trying low-latency and real-time kernels and tweaking the RT times and priorities it still didn't work properly. It wasn't until my son suggested turning compiz that the problem dissapeared. (Grrrrr!)
BTW, The DMA issue isn't so much about getting the data fast enough off the disk, but more about that CPU continually needs to be interrupted to read/write the disk if you don't have DMA configured - hence instead of attending to audio requests it is spending time handling disk IO. On 8/1/07, James Gregory <[EMAIL PROTECTED]> wrote: > > On Wed, 2007-08-01 at 15:29 +1000, Amos Shapira wrote: > > On 01/08/07, James Gregory <[EMAIL PROTECTED]> wrote: > > > > > > Good thinking, but DMA was enabled. I checked the other settings, and > > > twiddled them, but it's still skipping. Current config is as follows: > > > > > > You keep assuming that it's an IO issue - what about creating a short > file > > which can fit in memory and try to play it repeatedly, just to see that > the > > system can keep up with the playing without the disk in the equation? > > Well, actually I kinda assumed it was a scheduler issue, but fair point > nonetheless -- measure then optimise. However, all the 4-5MB files I > play can well and truly fit into the 1GB of RAM in the system and I have > no swap partition. I did the experiment however, and playing the same > file repeatedly still suffers the same problem. > > James. > > -- > James Gregory -- http://codelore.com -- [EMAIL PROTECTED] > > > -- > SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ > Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html > -- Regards, Martin Martin Visser -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
