On Wed, Jan 16, 2002 at 09:44:14AM +0800, Wayne Chan wrote: > Hi, > > Just some info for Slackware-8.0 users that I have discovered. > > For those who install the kernel 2.4.5 image and source, please note that > the kernel is compile with "/dev file system support" enable under "File > systems". > > This create a problem when compiling alsa driver. Alsa config will assuming > that devfs will be automatically mounted at boot. So after compiling and > install the alsa drivers, when you do a modprobe, the alsa driver will tries > to create the "/dev" directory under devfs (Under normal case, "/dev" should > be at /proc/asound). So without this "/dev" directory, even though you see > the driver loaded correctly, there will no sound and all alsa utilities > throw out error like "mixer not found" blah blah blah. > > Solutions: Before compiling alsa drivers, do either > > 1) With kernel 2.4.5 and higher source, > - do "make menuconfig". > - Unselect "/dev file system support" under file system. > - Save and exit > - do "make dep" > (Recompile of kernel not necessary)
recompilation of the kernel would be necessary since you are going to
have to compile that kernel for not having that support. any other previous
kernels, unless you had compiled them yourself, will have DevFS support and
loadable at boot time (Pat V. throws in a monolithic kernel for stock
installation).
> Or
>
> 2) Recompile kernel with "/dev file system support" AND "Automatically mount
> at boot" enable.
> (Note: Slackware-8.0 have already prepared /etc/rc.S to mount devfs
> whenever necessary)
This totally has worked for me since alsa 0.5.10. If you're enabling
DevFS support, it will have to be started BEFORE you do your modprobe for the
alsa module. If not, it'll croak, or you'll have to use ./snddevices to create
the device before doing the modprobe. It's best that if you do use DevFS that
you SHOULD enable it at boot time. (there is no reason for you to NOT mount it
at boot time.)
BTW.. make xconfig works wonders. :)
BL.
--
Brad Littlejohn | Email: [EMAIL PROTECTED]
Unix Systems Administrator, | [EMAIL PROTECTED]
Web + NewsMaster, BOFH.. Smeghead! :) | http://www.wizard.com/~tyketto
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