fabio: cat /sys/devices/platform/thinkpad_acpi/hotkey_recommended_mask
for the brightness: sysfs has to files in /sys/devices/virtual/backlight/thinkpad_screen. brightness and actual_brightness. brightness always says '6', actual_brightness correctly gives the actual level.
fabio: platform/ thinkpad_ acpi/hotkey_ recommended_ mask
cat /sys/devices/
for the brightness: virtual/ backlight/ thinkpad_ screen. brightness and actual_brightness.
sysfs has to files in /sys/devices/
brightness always says '6', actual_brightness correctly gives the actual level.