usb sound module loading
gpalmer at freebsd.org
Sat Jun 29 19:20:15 UTC 2013
On Sat, Jun 29, 2013 at 12:03:20PM -0700, Waitman Gobble wrote:
> I have sound modules commented out in kernel config :
> # Sound support
> #device sound # Generic sound driver (required)
> #device snd_cmi # CMedia CMI8338/CMI8738
> #device snd_csa # Crystal Semiconductor CS461x/428x
> #device snd_emu10kx # Creative SoundBlaster Live! and Audigy
> #device snd_es137x # Ensoniq AudioPCI ES137x
> #device snd_hda # Intel High Definition Audio
> #device snd_ich # Intel, NVidia and other ICH AC'97 Audio
> #device snd_via8233 # VIA VT8233x Audio
> #device snd_uaudio # USB Audio
> However, if i plug in a USB mic the following kernel modules are loaded
> 8 1 0xffffffff81e44000 f344 snd_uaudio.ko
> 9 2 0xffffffff81e54000 3dfdf sound.ko
> I do not seem to have any sound related options active in /boot/loader.conf or
> This causes a problem when using ossv4.2 in ports, actually when a USB mic is
> plugged in ...
> (when using the oss v4.2 drivers, and you have them loaded into the kernel,
> 14 3 0xffffffff82086000 7b581 osscore.ko
> 15 1 0xffffffff81e44000 4360 oss_cmpci.ko
> 16 1 0xffffffff81e49000 214a0 oss_hdaudio.ko
> ... the machine instantly reboots. It would be good to either prevent sound.ko
> from loading, or have the machine use the oss4.2 driver instead.
> Any hints or suggestions appreciated.
You don't mention which release you are using, but I suspect the USB
config file for devd is autoloading the snd_uaudio module for you.
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