On 7/31/06, zcat <zcat(a)wired.net.nz> wrote:
You can find this at http://wlug.org.nz/UDev which has links to a number of websites.
Thanks, I seem to have it figured out now and added my experience to the wiki. Hopefully I can get Verne's system sorted out tomorrow.
One little tip - what I would do is name the devices (using udev) something like /dev/soundev1, /dev/soundev2 or similar rather than variations on dsp as it seems like you can't lock down a pre-existing name. You can, you just have to be sure you handle all possible devices uniquely so the kernel never gets a chance to put something else there first. Renaming the devices is probably safer but Verne's scrips all refer to /dev/dspX and he doesn't want to have to change them!
For example my ethernet cards are lan0, lan1 which are locked down and eth0/1 randomly change.
That's what most of the documentation suggests.. but I think swapping them would have worked in your case too.
I suspect why yours worked is that you renamed from dsp* to dsp so if there was a conflict it went away by doing that. I tried doing similar but I was naming eth0 rather than eth. I should try experimenting some more... I do think udev could be improved though. How hard would it be for udev to do "I will give existing devices their name they have used previously and then set up names for new devices" Ian -- Ian McDonald Web: http://wand.net.nz/~iam4 Blog: http://imcdnzl.blogspot.com WAND Network Research Group Department of Computer Science University of Waikato New Zealand