在 2006-08-23三的 12:48 +0200，Daniel Bauer写道：
Am Mittwoch, 23. August 2006 12:29 schrieb Zhang Weiwu:
Hello. My notebook have on-board sound card which is broken. I bought a USB sound card for replacement. The problem is SuSE detects the old on-board sound card and still use it for sound output, even if USB sound card is plugged in.
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I don't know, if this helps, but have you tried disabling the onboard sound in the BIOS?
I now managed to get the USB sound card to work, by not using a HUB. I didn't realize the HUB is not capable of powering up the USB sound. Now, I can use the usb sound after directly plug the USB sound on the notebook, with $ mplayer -ao alsa:device=hw=1 What you said (disable it in the BIOS) makes good sense! However in my case I just wish to preserve the on-board sound. I said the on-board sound is broken, actually only the earphone plug is broken. When I use an earphone, I need to plug the USB sound; but when I want to use the speaker, becaues I cannot carry a speaker with me all the time I trival, I still wish to use the on-board sound card which is internally connected to the speaker of the notebook. The best solution is to have an option in gnome-control-center to let me set perfered sound output device, as I can do on Ubuntu. I can go there and switch preference when I want the speaker, without having to reboot to go to BIOS setting:)
Daniel
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