OPTi EV1935 MachOne soundcard

Brian Mury b.mury at ieee.org
Mon Sep 27 07:02:42 UTC 2004

My motherboard has AC97 audio built-in. I just stuck an old OPTi EV1935
MachOne soundcard that I had lying around into the machine. Kudzu did
not alert me to new hardware at startup, but it did put an entry into
/etc/sysconfig/hwconf. lspci also shows the card (and identifies it

I cannot figure out how to get anything to actually use the card. The
volume control, soundcard detection, hardware browser, etc applications
don't show it. No audio players give me the option of using it. Other
than /etc/sysconfig/hwconf and lspci, I haven't found anything that
seems to even know it's there.

My questions are:

1 - How do I get this card to work?

2 - Is it possible to use both the motherboard's AC97 and the soundcard
at the same time (application A using one, application B using the

3 - This one's a bit OT here, but does anyone know how this card
compares to the built-in AC97? Which one's better?

Here's the lspci -v output:

02:05.0 Multimedia audio controller: OPTi Inc. EV1935 ECTIVA MachOne PCIAudio (rev 10)
        Flags: bus master, user-definable features, medium devsel, latency 32, IRQ 5
        I/O ports at b000
        I/O ports at b400 [size=128]
        Capabilities: [dc] Power Management version 2
00:06.0 Multimedia audio controller: nVidia Corporation nForce2 AC97 Audio Controler (MCP) (rev a1)
        Subsystem: nVidia Corporation: Unknown device 4144
        Flags: bus master, 66Mhz, fast devsel, latency 0, IRQ 9
        I/O ports at d000
        I/O ports at d400 [size=128]
        Memory at e6005000 (32-bit, non-prefetchable) [size=4K]
        Capabilities: [44] Power Management version 2

Here's the /etc/sysconf/hwconf entries:

class: AUDIO
bus: PCI
detached: 0
driver: unknown
desc: "OPTi Inc.|EV1935 ECTIVA MachOne PCIAudio"
vendorId: 1045
deviceId: c935
subVendorId: 0000
subDeviceId: 0000
pciType: 1
pcidom:    0
pcibus:  2
pcidev:  5
pcifn:  0
class: AUDIO
bus: PCI
detached: 0
driver: snd-intel8x0
desc: "nVidia Corporation|nForce2 AC97 Audio Controler (MCP)"
vendorId: 10de
deviceId: 006a
subVendorId: 10de
subDeviceId: 4144
pciType: 1
pcidom:    0
pcibus:  0
pcidev:  6
pcifn:  0

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