(In reply to comment #12)

Hi Daniel,

correct, before that patch, the display was controllable through
/sys/class/backlight/acpi_video0/brightness.

After that patch, the display is always dark.

The only change which was done by Alex, was adding the lines, which you
commeted out. (If I understood the code correct, the other two lines, which
were removed, are obsolete and not needed).

So if you removed that two lines, then you've got the same code as before and
our Amilo (with ATI card) is working fine, but Denys problem will appear
again...