I don't claim to be an expert in devfs, but I've used it for a while, and this works for me. The thing to know about devfs is that the files inside it aren't real; that is, they go away after each reboot. If you have devfs setup, you should notice that a /dev/snd directory appears when you load your alsa sound modules and is not there when you don't. Also, if most of the files in /dev appear to be symlinks, or you have very few files in that directory, you probably have devfs enabled in the kernel.
To get a dev/sequencer working, you could just insert the appropriate module (snd-seq-oss) and do a 'ln -s /dev/sound/sequencer /dev/sequencer', but that's not the best solution. What you have to convince devfsd, a program that adds missing symlinks, permissions, etc. automatically to the devfs mount, to add what you want. Be sure that you have devfsd installed and ready on your system (if you have devfs, you probably have devfsd.) Now edit /etc/devfsd.conf. Be sure to have at least this (taylor to your needs) : # Enable full compatibility mode for old device names. REGISTER .* MKOLDCOMPAT UNREGISTER .* RMOLDCOMPAT # Gives all users r/w permissions on sound devices REGISTER ^sound/.* PERMISSIONS root.users 660 REGISTER ^snd/.* PERMISSIONS root.users 660 Combine this with the appropriate entries in modules.conf alias char-major-116 snd options snd snd_cards_limit=1 snd_major=116 alias snd-card-0 snd-ad1816a alias sound-slot-0 snd-card-0 alias sound-service-0-0 snd-mixer-oss alias sound-service-0-1 snd-seq-oss alias sound-service-0-3 snd-pcm-oss alias sound-service-0-8 snd-seq-oss alias sound-service-0-11 snd-mixer-oss alias sound-service-0-12 snd-pcm-oss And load the OSS compatibility modules: /sbin/modprobe snd-ad1816a /sbin/modprobe snd-opl3-synth /sbin/modprobe snd-pcm-oss /sbin/modprobe snd-seq-oss And viola (again!), you get this in /dev lr-xr-xr-x 1 root root 11 Jun 12 09:54 audio -> sound/audio lr-xr-xr-x 1 root root 10 Jun 12 09:54 dmfm -> sound/dmfm lr-xr-xr-x 1 root root 12 Jun 12 09:54 dmmidi -> sound/dmmidi lr-xr-xr-x 1 root root 9 Jun 12 09:54 dsp -> sound/dsp lr-xr-xr-x 1 root root 10 Jun 12 09:54 midi -> sound/midi lr-xr-xr-x 1 root root 11 Jun 12 09:54 mixer -> sound/mixer lr-xr-xr-x 1 root root 15 Jun 12 11:14 sequencer -> sound/sequencer lr-xr-xr-x 1 root root 16 Jun 12 11:14 sequencer2 -> sound/sequencer2 Can you follow? - Brent On Wed, 12 Jun 2002, Bernez K wrote: > Hi, > > I am still desesperately trying to install and configure alsa in order > to play MIDI files. I already posted a number of messages to Alsa-user > list and I thank all the people who tried to help me but I am still > worried. > > I have'nt got /dev/sequencer. > > The install file in alsa-driver directory gives: 5) Run the > './snddevices' script to create new sound devices in /dev directory. > Skip this step, if you have a kernel with the DEVFS support. > > Does this mean that './snddevices' MUST NOT be used to create new sound > devices when using DEVFS support ? If yes (do not use snddevices) how to > create them ? > > > Bernez > ------------------------------------------------------------------------ > Mandrale-Linux-8.2 (Kernel-2.4.18-6mdk) with DEVFS support > CreativeLabs SoundBlaster Live! - alsa-0.9.0beta12 > > _______________________________________________________________ > > Sponsored by: > ThinkGeek at http://www.ThinkGeek.com/ > _______________________________________________ > Alsa-user mailing list > [EMAIL PROTECTED] > https://lists.sourceforge.net/lists/listinfo/alsa-user > _______________________________________________________________ Sponsored by: ThinkGeek at http://www.ThinkGeek.com/ _______________________________________________ Alsa-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-user
