Date: Sat, 6 Mar 2004 11:00:49 -0500 From: Mathew Kanner <mat@cnd.mcgill.ca> To: Daniel Lang <langd-freebsd-hackers@leo.org> Cc: hackers@freebsd.org Subject: Re: Standard sbc and pcm support in GENERIC kernel? Message-ID: <20040306160049.GH35653@cnd.mcgill.ca> In-Reply-To: <20040305184424.GA10310@atrbg11.informatik.tu-muenchen.de> References: <20040303160340.700C5170D4@www.wcborstel.nl> <20040304205210.GJ490@geekpunk.net> <Pine.BSF.4.50L0.0403050810510.14092-100000@fryit.atlasta.net> <20040305184424.GA10310@atrbg11.informatik.tu-muenchen.de>
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On Mar 05, Daniel Lang wrote: > Hi, > > David Raistrick wrote on Fri, Mar 05, 2004 at 08:27:56AM -0800: > [..] > > kldload snd_driver > > > > is of course the correct way to do it. FWIW, kldunload snd_driver does > > /not/ unload all of the modules that kldload snd_driver loads. > [..] > > snd_driver is a module that contains _all_ drivers, > thus you have the best chance to get sound working. > Unloading it, will of course unload the whole module with > all drivers. There is no way to leave one of the drivers > in the kernel. > > I agree, that there is not much documentation which driver > module supports which sound device (or I was not successful > to dig that up). > > However, you can determine the correct module, by subsequently > loading and unloading each individual driver module. The one > which attached to your sound device and actually works > (check /dev/sndstat as well) is obviously the correct one. > > Not a very efficient way, but it works. :) David and Daniel, First let me say that on my 5.x machine, kldunload snd_driver does unload all the modules (and detaches the drivers when applicable). In regards to how hard it is to know which module provides the driver, I've just added to -current the following, mat@tube$ cat /dev/sndstat FreeBSD Audio Driver (newpcm) Installed devices: pcm0: <CMedia CMI8738> at io 0xb800 irq 11 kld snd_cmi (1p/1r/0v channels duplex default) pcm1: <Creative EMU10K1> at io 0xb400 irq 5 kld snd_emu10k1 (4p/2r/0v channels duplex) So the installation procedure is, as root. kldload snd_driver for each kld xxx in the output echo "xxx_load=\"YES\"" >> /boot/loader.conf Does this seem reasonable? --Mat -- In general, a standard is very useful, whether it's de facto or du jour. - Microsoft's Greg Sullivan as misquoted by News.Com
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