amdtemp(4) [freebsd man page]

AMDTEMP(4)						   BSD Kernel Interfaces Manual 						AMDTEMP(4)

NAME

     amdtemp -- device driver for AMD processor on-die digital thermal sensor

SYNOPSIS

     To compile this driver into the kernel, place the following line in your kernel configuration file:

	   device amdtemp

     Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):

	   amdtemp_load="YES"

DESCRIPTION

     The amdtemp driver provides support for the on-die digital thermal sensor present in AMD Family 0Fh, 10h, 11h, 12h, 14h, and 15h processors.

     For Family 0Fh processors, the amdtemp driver reports each core's temperature through sysctl nodes, named
     dev.amdtemp.%d.core{0,1}.sensor{0,1}.  The driver also creates dev.cpu.%d.temperature in the corresponding CPU device's sysctl tree, display-
     ing the maximum temperature of the two sensors located in each CPU core.

     For Family 10h, 11h, 12h, 14h, and 15h processors, the driver reports each package's temperature through a sysctl node, named
     dev.amdtemp.%d.core0.sensor0.  The driver also creates dev.cpu.%d.temperature in the corresponding CPU device's sysctl tree, displaying the
     temperature of the shared sensor located in each CPU package.

SYSCTL VARIABLES

     The following variable is available as both sysctl(8) variable and loader(8) tunable:

     dev.amdtemp.%d.sensor_offset
     Add the given offset to the temperature of the sensor.  Default is 0.

SEE ALSO

     loader(8), sysctl(8)

HISTORY

     The amdtemp driver first appeared in FreeBSD 7.1.

AUTHORS

     Rui Paulo <rpaulo@FreeBSD.org>
     Norikatsu Shigemura <nork@FreeBSD.org>
     Jung-uk Kim <jkim@FreeBSD.org>

CAVEATS

     For Family 10h and later processors, ``(the reported temperature) is a non-physical temperature measured on an arbitrary scale and it does
     not represent an actual physical temperature like die or case temperature.  Instead, it specifies the processor temperature relative to the
     point at which the system must supply the maximum cooling for the processor's specified maximum case temperature and maximum thermal power
     dissipation'' according to BIOS and Kernel Developer's Guide (BKDG) for AMD Processors,
     http://developer.amd.com/documentation/guides/Pages/default.aspx.

BSD
								 February 23, 2012							       BSD

Check Out this Related Man Page

ACPI_TOSHIBA(4) 					 BSD/i386 Kernel Interfaces Manual					   ACPI_TOSHIBA(4)

NAME

     acpi_toshiba -- Toshiba HCI interface

SYNOPSIS

     To compile this driver into the kernel, place the following line in your kernel configuration file:

	   device acpi_toshiba

     Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):

	   acpi_toshiba_load="YES"

DESCRIPTION

     HCI is Toshiba's Hardware Control Interface which is somewhat uniform across their models.  The acpi_toshiba driver allows the user to manip-
     ulate HCI-controlled hardware using a number of sysctl(8) variables.

SYSCTL VARIABLES

     The following sysctls are currently implemented:

     hw.acpi.toshiba.force_fan
	     Causes active cooling to be forcibly enabled ('1') or disabled ('0') regardless of the current temperature.

     hw.acpi.toshiba.video_output
	     Sets the active display to use according to a bitwise OR of the following:

	     0	     No display
	     1	     LCD
	     2	     CRT
	     4	     TV-Out

	     Only some systems (i.e., the Libretto L5) support video switching via this hardware-specific driver.  Use the acpi_video(4) driver
	     for generic video output support.

     hw.acpi.toshiba.lcd_brightness
	     Makes the LCD backlight brighter or dimmer (higher values are brighter).

     hw.acpi.toshiba.lcd_backlight
	     Turns the LCD backlight on and off.

     hw.acpi.toshiba.cpu_speed
	     Sets the CPU speed to the specified speed.  This provides functionality similar to the hw.acpi.cpu.throttle_state variable.  Higher
	     sysctl values mean lower CPU speeds.

     Defaults for these variables can be set in sysctl.conf(5), which is parsed at boot-time.

LOADER TUNABLES

     The hw.acpi.toshiba.enable_fn_keys tunable enables or disables the function keys on the keyboard.	Function keys are enabled by default.

     This behaviour can be changed at the loader(8) prompt or in loader.conf(5).

SEE ALSO

     acpi(4), acpi_video(4), loader.conf(5), sysctl.conf(5), sysctl(8)

HISTORY

     The acpi_toshiba driver first appeared in FreeBSD 5.1.

AUTHORS

     The acpi_toshiba driver was written by Hiroyuki Aizu <aizu@navi.org>.  This manual page was written by Philip Paeps <philip@FreeBSD.org>.

BSD
								 February 19, 2004							       BSD

Linux and UNIX Man Pages

amdtemp(4) [freebsd man page]

Check Out this Related Man Page