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SubjectAlsa kernel questionS

I've got a Hercules Fortissimo III 7.1 :

00:0a.0 Multimedia audio controller: Cirrus Logic CS 4614/22/24
[CrystalClear SoundFusion Audio Accelerator] (rev 01)
Subsystem: Hercules Fortissimo III 7.1
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=slow >TAbort-
<MAbort- >SERR- <PERR-
Latency: 32 (1000ns min, 6000ns max)
Interrupt: pin A routed to IRQ 11
Region 0: Memory at e9100000 (32-bit, non-prefetchable)
Region 1: Memory at e9000000 (32-bit, non-prefetchable)
Capabilities: [40] Power Management version 2
Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA
Status: D0 PME-Enable- DSel=0 DScale=0 PME-

I use it *only* via the optical output.

Now it seems the alsa driver that's in 2.5 with mute the optical output
until black magic is performed in any alsa-compatible mixer.

Is there any boot option to tell alsa to activate the optical output
automatically ?

The second question is, with the alsa tools present on and
optical output activated, the only mixer setting that seem to have an
effect is the DAC.

Is there a way to set this knob as the default sound volume (as a kernel
boot option ...) ?

Why is the dac controlling the volume even when I'm reading a CD (i.e.
digital PCM input, digital optical output, what is the DAC doing here) ?

Sorry about the stupid questions, I found lots of material on building
alsa (not really needed now it's in-kernel) but little on how to use


Nicolas Mailhot
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