1.\" $OpenBSD: xlights.4,v 1.3 2007/05/31 19:19:55 jmc Exp $ 2.\" 3.\" Copyright (c) 2007 Gordon Willem Klok <gwk@openbsd.org> 4.\" 5.\" Permission to use, copy, modify, and distribute this software for any 6.\" purpose with or without fee is hereby granted, provided that the above 7.\" copyright notice and this permission notice appear in all copies. 8.\" 9.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16.\" 17.Dd $Mdocdate: May 31 2007 $ 18.Dt XLIGHTS 4 macppc 19.Os 20.Sh NAME 21.Nm xlights 22.Nd Xserve G4 and G5 front panel LEDs 23.Sh SYNOPSIS 24.Cd "xlights* at macobio?" 25.Sh DESCRIPTION 26The 27.Nm 28driver provides support for the on-board i2s virtual sound device 29that drives the front panel LEDs of Apple G4 and G5 Xserve machines. 30.Pp 31The lights provide an indication of system load and health. 32System load is indicated by three dots travelling in a ring around the sixteen 33LEDs found on the front panel. 34When the system is lightly loaded these dots travel quickly and slow down 35as system load increases. 36System health is indicated by the absence of the dots which 37means a hung machine or one that is in 38.Xr ddb 4 . 39.Sh SEE ALSO 40.Xr intro 4 , 41.Xr macobio 4 42