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Old 09-26-2010, 01:39 AM
Default New sound card on amd64

Setting the S/PDIF Loopback in alsamixer [Off] seems to do the trick.

On Sat, 25 Sep 2010 19:24:51 -0400, vr <debian-user@iotk.net> wrote:
> I'm using Debian unstable amd64 with an Intel DP55WB motherboard with
> on-board audio.
> I bought a replacement HT Omega Claro+ sound card with a CMI8788 chipset
> because I'm after optical output to hook to a surround receiver.
> I powered off my Debian system, inserted the new card, powered on and
> straight in the motherboard BIOS and disabled the on-board Intel sound
> card. Then I booted to Debian.
> I've un-muted everything in alsamixer and set the volumes to 84. The
> "device" is seen and is set to C-Media CMI8788 in alsamixer.
> I get audio out of the 1/8th inch jack ports but I cannot get audio out
> the optical port.
> I did an apt-get update ; apt-get dist-upgrade (no errors).
> I can successfully "speaker-test -Dplug:spdif -c2 with no errors, though
> I'm not sure if that's completely accurate syntax to test the optical
> Is there some other bit needed to make the optical port come alive?
> Do I need to issue some command to flush remnants the old Intel drivers
> out?

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