From abbebd29d1c0e6bb07628f180adc07f9ccb07845 Mon Sep 17 00:00:00 2001 From: Markus Brueffer Date: Sat, 14 Jan 2006 00:39:26 +0000 Subject: - Document the latest changes for controlling the fan - s/Thinklight/ThinkLight/ in two cases Approved by: brueffer MFC after: 1 week --- share/man/man4/man4.i386/acpi_ibm.4 | 28 ++++++++++++++++++++++++---- 1 file changed, 24 insertions(+), 4 deletions(-) (limited to 'share') diff --git a/share/man/man4/man4.i386/acpi_ibm.4 b/share/man/man4/man4.i386/acpi_ibm.4 index a841bb463ae1..09455a791bce 100644 --- a/share/man/man4/man4.i386/acpi_ibm.4 +++ b/share/man/man4/man4.i386/acpi_ibm.4 @@ -137,7 +137,7 @@ The .Nm driver provides a .Xr led 4 -interface for the Thinklight. +interface for the ThinkLight. The Thinklight can be made to blink by writing .Tn ASCII strings to the @@ -269,8 +269,28 @@ Toggle Bluetooth chip activity. (read-only) Indicates whether the WLAN chip is active or not. .It Va dev.acpi_ibm.0.fan -(read-only) -Indicates whether the fan is on or off. +Indicates whether the fan is in automatic (1) or manual (0) mode. +Default is automatic mode. +This sysctl should be used with extreme precaution, since disabling automatic +fan control might overheat the ThinkPad and lead to permanent damage if the +.Va fan_level +is not set accordingly. +.It Va dev.acpi_ibm.0.fan_level +Indicates at what speed the fan should run when being in manual mode. +Values are ranging from 0 (off) to 7 (max). +The resulting speed differs from model to model. +On a T41p this is as follows: +.Pp +.Bl -tag -width indent-two -compact +.It Li 0 +off +.It Li 1, 2 +~3000 RPM +.It Li 3, 4, 5 +~3600 RPM +.It Li 6, 7 +~4300 RPM +.El .It Va dev.acpi_ibm.0.fan_speed (read-only) Fan speed in rounds per minute. @@ -310,7 +330,7 @@ Defaults for these sysctls can be set in .Sh FILES .Bl -tag -width ".Pa /dev/led/thinklight" .It Pa /dev/led/thinklight -Thinklight +ThinkLight .Xr led 4 device node .El -- cgit v1.3