[linux-audio-user] Using DeMuDi

[Darren Warner]

Thanks for the info Derek - this is very useful.

Where do you get sarge DeMuDi? Both agnula.org and demudi.org mention
woody & sid, but nothing in between.

Basically, I'm trying to get a musician friend off an old Atari
ST/Notator setup (which is preferable to Windows). Although problems are
to be expected at the moment, it needs to be somewhat usable. I'm hoping
this can work, because as a developer and an ex sound engineer it's an
area I can really get my teeth into :)

Darren

On Sun, 2003-04-20 at 10:01, derek holzer wrote:
> Darren,
> 
> >I have a few general questions for those people using DeMuDi,
> >
> >- Which version are you using - woody or sid?
> >
> Sarge. as i mentioned in a previous email, the "official release" of 
> this will be in a few weeks. i was lucky enough to do a workshop with 
> one of the developers a week ago, so i really got a lot of the bugs out!I'm actually wondering if I've got the right apt sources () - you say your building jack, but running 
> 
> >- Is anyone using a sid IsDeMuDi over a sarge (or even woody) base Debian?
> >
> 
> is there a Sid Demudi?
> 
> anyway, for the record, here's what i did to get it running:
> 
> i installed Woody with the ext3 file system, then updated to Sarge, 
> built my own custom kernel with the low latency and preemptive patches 
> [don't forget the devfs and reiserfs support!], compiled my Alsa and 
> Jack, and got the Demudi apps. so, technically, i am only half-using 
> Demudi. i skipped using the kernel, although i have gotten the newest 
> kernel version running nicely on my laptop, there were still some issues 
> with it keeping its Alsa settings and such. also, some hand-tweaking is 
> required of the /etc/fstab to add the /dev/shm file system for the Jack. 
> next step is to ditch the ext3 file system and replace it with reiserfs 
> for smoother low latency operation, but that is beyond anything that 
> Demudi would do right now...
> 
> >
> >- How much software are you replacing with upstream source balls or CVSI'm actually wondering if I've got the right apt sources () - you say your building jack, but running 
> >versions?
> >
> is running
> i still get Alsa and Jack from source. especially Jack, as i want to 
> seriously optimize it right now, so i am trying as many tweaks as i can 
> find in the compile. i am not sure if the Demudi Jack version is 
> optimized for realtime operation by users [instead of root, which 
> crashes the shm file system anyway under Demudi], and if it is, then it 
> may not be possible to use it with an ext3 file system on a 2.4.20 
> kernel without lockup. if Guenter or somebody else has patched the 
> 2.4.20 Demudi kernel package against this, it is not a problem. but i 
> don't know if all this is worked out yet.
> 
> other than that, there are almost zero sound apps which i have gotten 
> from upstream. many of the Demudi Sound Apps packages in the Sarge are 
> compiled from CVS versions [espc. PD, Ardour, etc...], although probably 
> not the LATEST in many cases, although the PD and related externals 
> versions I can vouch for specifically as being only a week old!
> 
> >- How 'usable' is your setup - I doubt that many have a workhorse
> >solution, although there seem to be a few success stories on this list
> >and elsewhere, but is it still really just experimental (in the Debian
> >sense of the word)?
> >
> 
> with Jack fine-tuned, i see my setup being highly usable... plugging  PD 
> and Ardour together alongside my HDSP card is my main goal, and i think 
> i am almost there. right now, it is just as experimental as i am.....
> 
> best,
> Derek
> 
> 

________________________________________________________________________
This email has been scanned for all viruses by the MessageLabs SkyScan
service. For more information on a proactive anti-virus service working
around the clock, around the globe, visit http://www.messagelabs.com
________________________________________________________________________