Screen brightness Function keys FN6/FN7 do not work Toshiba L730 laptop [SOLVED]

Add to grub parameters :

acpi_backlight=vendor acpi_osi=Linux

Easiest & safest way is to use Yast->Boot Loader->Boot Loader Options.

Posted for archival/informational purpose.

Thank you chris2kari, it worked for me too! Different hardware but same problem.
Now “Fn+F6” and “Fn+F7” work as expected.

Toshiba Portégé R390 (PT331E; R930-163), Linux 3.7.10-1.16-desktop openSUSE 12.3 (Dartmouth) (x86_64).