I have the A665D-S5175 and the results are the same with 11.04 April 4th build: ACPI on: no keyboard backlight. ACPI off: keyboard backlight works perfectly.
I have the A665D-S5175 and the results are the same with 11.04 April 4th build:
ACPI on: no keyboard backlight.
ACPI off: keyboard backlight works perfectly.