Ive seen a hundred of these types of problems, and the answer is almost always.... to use alsa mixer to un-mute the channels.
not in this case, although the simptoms are identicle.
Its a long story, but i will start at the beginning....
I was using Gentoo-2.6.9-r14 kernel. sound worked fine.
however, this kernel was crashing when i attempted to use my USB mouse.
2.6.9 is the latet stable gentoo kernel for amd64, so i used the 2.6.10 vanilla kernel (from kernel.org, unpatched)
this fixed my mouse problem, however the sound nolonger worked.
alsaconfig correctly detects my nForce-3 sound card, and correctly chooses the intel8x0 driver.
i used alsamixer to un-mute all channels (one strange thing, the master channel didnt have a volume, just mute / unmute, but i put this down to y mixer not having a master volume, only PCM volume, and th update in the alsa- drivers and libraries.)
still no sound. all alsa players apear to be playing fine, but i hear no sound.
At this point, i un-installed all alsa related packages, and re-compiled my kernel without ALSA drivers. i downloaded the latest stable alsa-utils, alsa-libs and alsa-driver from alsa-project.org, and compiled them (without OSS emulation)
i rememberd to run the ./snddevices script also (a failing point for many newbies ive noticed)
but still.... all players detect a sound card, they all play, but nothiing through the speakers.
all channles (even the microphone) have been unmuted and turned up.
im out of idea's
are their anyhidden alsa config files that could be causing this type of malfunction ???
anyways.. some technical data.
my specs... AMD64 3400+ Nforce-3 chipset, VNF3-250 chaintech motherboard.
0000:00:06.0 Multimedia audio controller: nVidia Corporation nForce3 250Gb AC'97 Audio Controller (rev a1)
Subsystem: Chaintech Computer Co. Ltd: Unknown device f646
Flags: bus master, 66Mhz, fast devsel, latency 0, IRQ 20
I/O ports at fb00
I/O ports at fa00 [size=128]
Memory at fdffb000 (32-bit, non-prefetchable) [size=4K]
Capabilities:  Power Management version 2
bash-2.05b# cat /dev/sndstat
Sound Driver:3.8.1a-980706 (ALSA v1.0.8 emulation code)
Kernel: Linux qwijibow 2.6.10 #1 Mon Mar 21 02:33:54 GMT 2005 x86_64
Config options: 0
Type 10: ALSA emulation
NVidia CK8S with CMI9761 at 0xfdffb000, irq 20
Audio devices: NOT ENABLED IN CONFIG
Synth devices: NOT ENABLED IN CONFIG
Midi devices: NOT ENABLED IN CONFIG
7: system timer
Mixers: NOT ENABLED IN CONFIG
should i be worried about the NOT ENABLED IN CONFIG ???
where is the config this device speaks of ???
thanks for any ideas / help / sympathy / donations for a better sound card
Ohh, and i am aware that Nvidia have released audio drivers for their nForce sound cards, however they are OSS only, and all my media software has been compiled without OSS support.