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From: Dominic Fandrey <LoN_Kamikaze@gmx.de>
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Subject: RELENG_7 vchans broken Maestro
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Since the switch to BETA4 (it might actually have happened earlier and I
didn't recognize) vchans don't work properly anymore (for me).

Instead of hearing a second source there only gets a lot of noise mixed into
the first audio stream.

# uname -a
FreeBSD homeKamikaze.norad 7.0-BETA4 FreeBSD 7.0-BETA4 #0: Wed Dec 12 01:30:18
CET 2007
root@homeKamikaze.norad:/usr/obj/VECTRA-7/i386/usr/src/sys/VECTRA-7  i386

# cat /dev/sndstat
FreeBSD Audio Driver (newpcm: 32bit 2007061600/i386)
Installed devices:
pcm0: <ESS Technology Maestro-2E> port 0x5400-0x54ff irq 11 at device 11.0 on
pci2 [MPSAFE] (4p:1v/1r:1v channels duplex default)

# sysctl -a | grep vchan
hw.snd.maxautovchans: 8
dev.pcm.0.play.vchans: 1
dev.pcm.0.play.vchanrate: 48000
dev.pcm.0.play.vchanformat: s16le
dev.pcm.0.rec.vchans: 1
dev.pcm.0.rec.vchanrate: 48000
dev.pcm.0.rec.vchanformat: s16le