The audio810 driver provides support for AC 97 audio controllers embedded in Intel ICH, nVidia nForce, and AMD 8111 chips.
32-bit kernel driver module
64-bit x86 kernel driver module
audio810 driver configuration file
See attributes(5) for a descriptions of the following attributes:
AMD-8111 HyperTransport I/O Hub Data Sheet — Advanced Micro Devices Inc.
ALC655 Specification — Realtek Inc.
Some laptops (including Sony VAIO, among others), have their on-board amplifier powered down by default, meaning that audio is suppressed even if hardware and the audio810 driver are working normally. To correct this, set the ac97-invert-amp=1 property in the /kernel/drv/audio810.conf to power-up the amplifier.