manipulate bios and hardware settings of Toshiba laptops
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Toshset ia a
command-line tool to allow access to much of the Toshiba
hardware interface developed by Jonathan Buzzard. It can do
things like set the hard drive spin-down time, turn off the
display and set the fan speed.
Credit for the
difficult task of reverse-engineering the Toshiba hardware
interface goes to Jonathan Buzzard. A link for
Jonathan’s tools is
All options are
listed by running toshset with no arguments.
If an argument
option is specified as the ’’-’’
character, stdin is read for that option. This is
particularly convenient when setting the owner string.
The method used
for access to the laptop hardware is given by the the
HCI/SCI access mode query field. This should be kernel or
direct. The kernel method requires kernel support and it is
the only access method supported for ACPI kernels. If ACPI
is not used this package does not require a special kernel
module. Also, it is highly likely that this tool will work
under different flavors of *NIX. As a result of this design
consideration, and because of my own desire that not every
user be able to change my laptop’s hardware settings,
the user must have read/write permission to /dev/toshiba in
order for this program to run properly.
toggle long query in which the assocated command-line
option is printed with each queried feature.
run in fast mode: a startup check is skipped, and values
are not queried after the are set. On machines for which
ioctl is slow, this can speed toshset up by up to a factor
toggle verbose mode in which normally silent messages
query features specified by
glob (all features if glob omitted). The glob string is
sandwiched between asterisks, so specifying -q bat
will query all features whose names contain the
’’bat’’ substring. If no glob is
given, then all features are queried.
Valid settings for features can be listed by omitting the
argument. The current list of feature options is
enable/disable system beep
set lcd brightness.
set lcd brightness. Not all
models support both -lcd and -inten.
set power-up mode
set beep volume. Note that this
controls the modem volume for my PCMCIA modem.
number of minutes until disk
number of minutes until display
set cooling method
set battery-save mode
control lcd backlight
power-up + attach internal
bluetooth device, or shutdown.
set display device for video:
internal lcd, external monitor, or tv-out
set CPU speed
enable/disable CPU cache
enable/disable CPU sleep
set time/date to wake
enable/disable annoying feature
of powering-off computer when lid is closed.
set parallel port mode
number of minutes of idle time
until system auto-off
set owner string. This string
is displayed at boot or resume time, if a user or supervisor
password is set.
set or clear the user password.
Toshset must be run on the console for this to work. The
password should be entered when the prompt is displayed. If
the password is currently set, entering it will clear the
set the supervisor password.
See the docs for -upasswd.
USB legacy mode: enable/disable
using an USB mouse as it would be a PS/2 one, without the
need to install a USB driver.
power-up + attach internal 3g modem device, or
USB FDD emulation mode: is
almost the same of the previous one for a floppy. It enables
the use of an USB floppy as it would be attached to an
internal FD controller (for booting etc.)
Enables/disables internal LAN controller.
enable/disable startup sound
startup logo mode (picture or
display’s transreflective mode.
also be set by specifying the (zero-offset) index of the
option. e.g. toshset -cpu 0 sets the cpu speed to
Copyright © 2002-8 Charles D. Schwieters
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE.
are locked and can not be changed when the battery save mode
is not ’’user.’’ Since I only have
one laptop, I can’t test this utility on other
hardware. User feedback in this regard is helpful. Some
features do not work on my laptop and they may work on
your’s, and visa-versa.
requires an experimental version of the toshiba_acpi kernel
module with an ACPI-enabled kernel.
News, updates and documentation: visit