----- Lee Revell <rlrevell@xxxxxxxxxxx> wrote: > On Fri, 2006-03-03 at 23:09 +0200, Sampo Savolainen wrote: > > On Fri, 2006-03-03 at 13:18 -0500, Lee Revell wrote: > > > > So, instead of interpreting them to users the software should > say: "learn C > > > > headers and read errno.h?". Gah. > > > > > > > > Good software tells the users what's really wrong and directs > the user in > > > > how to fix the issue. This leads to happier users and less > repeated "why > > > > doesn't this work" questions on mailing lists, irc, personal > email, etc. > > > > > > We don't KNOW what's wrong beyond "not enough bandwidth". > > > > "Problems with jackd using your soundcard. Specifically 'Not enough > > bandwidth'. If you are using an USB soundcard, this probably means > that > > you are running the soundcard with either a wrong buffer size or a > wrong > > amount of periods. Try running jackd with -r 3" > > > > We don't? I think we do know more. :) > > > > "Or maybe you have enabled CONFIG_USB_BANDWIDTH. Or your kernel is > buggy. Or your device is connected through a hub. The solution may > depend on which host controller driver you are using..." Crap. Those are a lot of variables. Perhaps a troubleshooting guide for USB interfaces? The alsa wiki is a total mess on this subject. I don't know enough about the issue to filter out what's true and what's luck but I would like to edit that document to be more conclusive. Here's where I'm at with my setup: 1) CONFIG_USB_BANDWIDTH is not configured 2) Buggy kernel? How do I determine that? the initial test was 2.6.12.2, I am installing 2.6.15.5 tonight. 3) Device is not connected through a hub 4) the host controller is usb-uhci for controller 1, 2 and 3 then ehci-hcd for a fourth 5) I have not yet tried running jackd with -r 3. I did read that periods with an odd number are deprecated but I did not understand the reason. Anything other options I might have left out? -lee
