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.TH AUDIO810 4D "September 12, 2020"
.SH NAME
audio810 \- Intel ICH series, nVidia nForce series and AMD 8111 audio core
support
.SH DESCRIPTION
The \fBaudio810\fR driver provides support for AC 97 audio controllers embedded
in Intel ICH, nVidia nForce, and AMD 8111 chips.
.SH FILES
.ne 2
.na
\fB\fB/kernel/drv/audio810\fR\fR
.ad
.RS 30n
32-bit kernel driver module
.RE

.sp
.ne 2
.na
\fB\fB/kernel/drv/amd64/audio810\fR\fR
.ad
.RS 30n
64-bit x86 kernel driver module
.RE

.sp
.ne 2
.na
\fB\fB/kernel/drv/audio810.conf\fR\fR
.ad
.RS 30n
\fBaudio810\fR driver configuration file
.RE

.SH ATTRIBUTES
See \fBattributes\fR(7) for a descriptions of the following attributes:
.sp

.sp
.TS
box;
c | c
l | l .
ATTRIBUTE TYPE	ATTRIBUTE VALUE
_
Architecture	PC-based systems
_
Interface Stability	Uncommitted
.TE

.SH SEE ALSO
.BR ioctl (2),
.BR audio (4I),
.BR mixer (4I),
.BR streamio (4I),
.BR attributes (7)
.sp
.LP
\fIAMD-8111 HyperTransport I/O Hub Data Sheet\fR \(em Advanced Micro Devices
Inc.
.sp
.LP
\fIALC655 Specification\fR \(em Realtek Inc.
.SH NOTES
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 \fBaudio810\fR driver are working normally. To correct this, set the
\fBac97-invert-amp=1\fR property in the \fB/kernel/drv/audio810.conf\fR to
power-up the amplifier.
.SH DIAGNOSTICS
In addition to being logged, the following messages may appear on the system
console:
.sp
.ne 2
.na
\fB\fBplay-interrupts too low\fR\fR
.ad
.br
.na
\fB\fBrecord-interrupts too low\fR\fR
.ad
.RS 30n
The interrupt rate in \fBaudio810.conf\fR is set too low. It has been reset to
the rate specified in the message. Update \fBaudio810.conf\fR to a higher
interrupt rate.
.RE

.sp
.ne 2
.na
\fB\fBplay-interrupts too high\fR\fR
.ad
.br
.na
\fB\fBrecord-interrupts too high\fR\fR
.ad
.RS 30n
The interrupt rate set in \fBaudio810.conf\fR is set too high. It has been
reset to the rate specified in the message. Update \fBaudio810.conf\fR to a
lower interrupt rate.
.RE