On 07/11/2010 17:03, Garrett Cooper wrote:
The problem appears to be with vchan-related code. If I start up 4+
applications on my machine that access the audio device, all goes
wonky on the 4+ allocation
I can confirm this behaviour, which seems odd with hw.snd.maxautovchans
defaulting to 16. It does not appear to be affected by increasing
dev.pcm.0.play.vchans up fron the default of 2 (as I apparently did at
some point up to 7.x), though reading sound(4) it's clear I don't fully
understand vchans.
A problem I encountered with snd_emu10kx in a clean 8.1RC2 install which
was not present in any previous version is a faint rapid mechanical
clicking sound adjustable with the "cd" mixer setting.
The only non-default audio setting I have is in loader.conf:
hint.emu10kx.0.multichannel_disabled="1"
hint.emu10kx.1.disabled="1"
pcm0: <EMU10Kx DSP front PCM interface> on emu10kx0
pcm0: <TriTech TR28602 AC97 Codec (id = 0x54524123)>
pcm0: Codec features 5 bit master volume, no 3D Stereo Enhancement
FreeBSD Audio Driver (newpcm: 32bit 2009061500/i386)
Installed devices:
pcm0: <EMU10Kx DSP front PCM interface> on emu10kx0 (4p:2v/1r:1v) default
snddev flags=0x2e2<AUTOVCHAN,BUSY,MPSAFE,REGISTERED,VPC>
[pcm0:play:dsp0.p0]: spd 48000, fmt 0x00200010, flags 0x00002100,
0x00000004
interrupts 726, underruns 0, feed 5, ready 0
[b:4096/2048/2|bs:4096/2048/2]
channel flags=0x2100<BUSY,HAS_VCHAN>
...
--
-Andrew J. Caines- Unix Systems Engineer a.j.cai...@halplant.com
FreeBSD/Linux/Solaris, Web/Mail/Proxy/... http://halplant.com:2001/
"Machines take me by surprise with great frequency" - Alan Turing
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