Laptop: Toshiba R630
OS: Linux Mint 14 Cinnamon
I have seen various articles (https://askubuntu.com/questions/151651/brightness-is-reset-to-maximum-on-every-restart) on adjusting brightness. But my laptop seems to have more than one way to adjust brightness using /sys fs.
/sys/class/backlight$ ls -l
total 0
lrwxrwxrwx 1 root root 0 Feb 24 11:56 acpi_video0 -> ../../devices/pci0000:00/0000:00:02.0/backlight/acpi_video0
lrwxrwxrwx 1 root root 0 Feb 24 12:18 intel_backlight -> ../../devices/pci0000:00/0000:00:02.0/drm/card0/card0-LVDS-1/intel_backlight
lrwxrwxrwx 1 root root 0 Feb 24 12:18 toshiba -> ../../devices/LNXSYSTM:00/device:00/TOS6208:00/backlight/toshiba
- why is there more than one way? what is the difference between them?
- which is the preferred way to set initial brightness for all run levels?
- how does toshset get installed? I don't remember installing myself. Does Mint install based on identified manufacturer?
$ dpkg -l | g toshset ii toshset 1.76-4 amd64 Access much of the Toshiba laptop hardware interface $ dpkg -L toshset /. /etc /etc/pm /etc/pm/sleep.d /etc/pm/sleep.d/novatel_3g_suspend /usr /usr/share /usr/share/doc /usr/share/doc/toshset /usr/share/doc/toshset/supported-models.txt /usr/share/doc/toshset/README.IrDA /usr/share/doc/toshset/copyright /usr/share/doc/toshset/README.video /usr/share/doc/toshset/toshiba-acpi /usr/share/doc/toshset/toshiba-acpi/2.6.28 /usr/share/doc/toshset/toshiba-acpi/2.6.28/Makefile /usr/share/doc/toshset/toshiba-acpi/2.6.28/toshiba_acpi.c /usr/share/doc/toshset/toshiba-acpi/2.6.28/install.sh /usr/share/doc/toshset/toshiba-acpi/2.6.26 /usr/share/doc/toshset/toshiba-acpi/2.6.26/Makefile /usr/share/doc/toshset/toshiba-acpi/2.6.26/toshiba_acpi.c /usr/share/doc/toshset/toshiba-acpi/2.6.26/install.sh /usr/share/doc/toshset/README /usr/share/doc/toshset/changelog.Debian.gz /usr/share/doc/toshset/README.Debian /usr/share/man /usr/share/man/man1 /usr/share/man/man1/toshset.1.gz /usr/share/man/man1/toshsat1800-irdasetup.1.gz /usr/sbin /usr/sbin/toshsat1800-irdasetup /usr/bin /usr/bin/toshset