LCD brightness control on Panasonic Toughbook Y7
I just installed OpenSUSE 10.3 on my Panasonic Toughbook CF-Y7, almost everything worked out of the box, but not the brightness control for the display.
I installed the panasonic driver "pcc_acpi_0.8.4-hy20071017" and
/proc/acpi/pcc is there with all entries:
ac_brightness, dc_brightness and their max/min values.
However, echoing values into them (e.g. echo 5 > /proc/acpi/pcc/dc_brightness while running on battery) has no influence on the current screen brightness. Only after rebooting will the new value be considered.
Someone has an idea what may be missing here ? Thanks a lot!