Date: Tue, 23 Apr 2002 23:04:01 +0100 (GMT/BST)
From: Digby Tarvin <[EMAIL PROTECTED]>
Subject: Linux sound
I have just gone through the process of installing SuSE Linux 7.3 onto a
20GB hard drive, and am trying to figure out if I have configured the
audio hardware optimally.
The YaST2 automatic installation/configuration tool did not seem at
all up to the task, and failed to configure any hardware even in manual
mode when I tried to spell out what it should find..
The 'alsaconf' utility was much more sucessful, and one I told it to
search for 'legacy ISA' hardware, it actually succeeded in locating
it even correctly assigned the interrupt level, and played the standard
test audio.
Now I am wondering if someone who is more familiar with sound hardware
on PCs, and the Libretto in particular, can advise me what to look for
to see if I have everything configured optimally.
Here is what 'aplay' reports seeing:
/proc/asound> aplay -l
Yamaha OPL3-SA3: 1 [card1] / #0: Yamaha OPL3-SA3
Directions: playback capture duplex
Playback subdevices: 1
Capture subdevices: 1
Playback subdevice #0: subdevice #0
Capture subdevice #0: subdevice #0
And /proc/asound/sndstat gives
/proc/asound> cat sndstat
Sound Driver:3.8.2-980706 (ALSA v0.5.11 emulation code)
Kernel: Linux rover 2.4.10-4GB #1 Fri Sep 28 17:20:21 GMT 2001 i586
Config options: 0
Installed drivers:
Type 10: ALSA emulation
Card config:
Yamaha OPL3-SA3 at 0x370, irq 5, dma 1&0
Audio devices:
0: Yamaha OPL3-SA3 (DUPLEX)
Synth devices: NOT ENABLED IN CONFIG
Midi devices: NOT ENABLED IN CONFIG
Timers:
7: system timer
Mixers:
0: Yamaha OPL3-SA3
I am guessing that the 'NOT ENABLED' lines indicate something that
wasn't enabled by the config program, but I am not sure if there
was a reason for that, or if Libretto has the necessary hardware
which will not be used until some more configuration is done.
Can anyone explain the organization of the sound hardware on the
Libretto, and how things like 'FM Synthesis', 3D sound support and
MIDI fit in with a straight forward AD and DA converter which
presumably all that is necessary to play basic/record linearly
sampled audio?
For comparison, here is what 'aplay' reports on the same version of
Linux installed on a desktop. There seems to be a lot more there,
but I don't know that the effect is.
Sound Blaster Live!: 1 [card1] / #0: EMU10K1
Directions: playback capture duplex
Playback subdevices: 32
Capture subdevices: 1
Playback subdevice #0: subdevice #0
Playback subdevice #1: subdevice #1
Playback subdevice #2: subdevice #2
Playback subdevice #3: subdevice #3
Playback subdevice #4: subdevice #4
Playback subdevice #5: subdevice #5
Playback subdevice #6: subdevice #6
Playback subdevice #7: subdevice #7
Playback subdevice #8: subdevice #8
Playback subdevice #9: subdevice #9
Playback subdevice #10: subdevice #10
Playback subdevice #11: subdevice #11
Playback subdevice #12: subdevice #12
Playback subdevice #13: subdevice #13
Playback subdevice #14: subdevice #14
Playback subdevice #15: subdevice #15
Playback subdevice #16: subdevice #16
Playback subdevice #17: subdevice #17
Playback subdevice #18: subdevice #18
Playback subdevice #19: subdevice #19
Playback subdevice #20: subdevice #20
Playback subdevice #21: subdevice #21
Playback subdevice #22: subdevice #22
Playback subdevice #23: subdevice #23
Playback subdevice #24: subdevice #24
Playback subdevice #25: subdevice #25
Playback subdevice #26: subdevice #26
Playback subdevice #27: subdevice #27
Playback subdevice #28: subdevice #28
Playback subdevice #29: subdevice #29
Playback subdevice #30: subdevice #30
Playback subdevice #31: subdevice #31
Capture subdevice #0: subdevice #0
Sound Blaster Live!: 1 [card1] / #1: EMU10K1 MIC
Directions: capture
Playback subdevices: 0
Capture subdevices: 1
Capture subdevice #0: subdevice #0
Sound Blaster Live!: 1 [card1] / #2: EMU10K1 EFX
Directions: capture
Playback subdevices: 0
Capture subdevices: 1
Capture subdevice #0: subdevice #0
Regards,
DigbyT
--
Digby R. S. Tarvin [EMAIL PROTECTED]
http://www.cthulhu.dircon.co.uk
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