I recently installed Ubuntu 12.04 32 bit in my Toshiba T110 laptop, and the brightness control doesn't work.
I have tried gedit
/etc/default/grub, and have modified the "quite splash" to many suggestion that i have come across, like:
"quiet splash acpi_backlight=vendor"
"quiet splash acpi_osi=Linux"
"quiet splash acpi_osi=Linux acpi_backlight=vendor"
but nothing seems to work, I mean i can see the brightness indicator moving but the brightness is set to highest all the time, Please help.