USB Microphone - messes audio if plugged in at boot

[techmum]

My Logitech USB microphone (with AK5370 chip) works wonderfully when plugged in after machine has powered up.

However, if it is plugged in when machine boots, my main audio device (HDA NVidia MLP51) no longer appears, I presume because the driver was not loaded at boot.

Wondering what file I need to configure to force the NVidia chipset to be installed as the main audio card and the USB microphone as an audio input device only?

ta
denise

[techmum]

!!! bump !!!

[techmum]

Actually I have made some progress for future reference of anyone with similar problem.

Thanks to Planet Fedora I picked up this entry today [in French!] >

http://blog.titax.fr/post/Fedora-7-e...carte-son.html

Anyway, the clue is that by adding the three lines to my /etc/modprobe.conf file, I was able to boot today with the USB microphone plugged in, without losing my audio output.

alias snd-card-1 snd_usb_audio
options snd-card-1 index=1
options snd_usb_audio index=1

I have to do more checking with other scenarios, such as having it unplugged when booting, to make sure that still works fine. Only glitch today was that the microphone was muted at start.

If anyone has any other suggestions, I'm listening.