Hi! I have HP Elitebook 8560w with FirePro M5950, Fedora 16, kernel 3.1.1,xorg ati driver 6.14.3 and issues with screen backlight - can't dimit.I can write to /sys/class/backlight/acpi_video0/brightness valuesfrom 0 to 20 (as stated in max_brightness), but it have no effect onthe screen, values in brightness as well as in actual_brightnessreflects written number.Before system boot, I can change brightness of the screen, and itpersist in operating system. Value of the/sys/class/backlight/acpi_video0/brightness indicates maximumbrightness (20) even if minimal was set before boot. Kernel radeon driver maintainers said, that backlight is driven by APCI drivers, so I'm here to ask for help :) How can I help to debug this issue? I'm able to recompile kernel and apply patches, as well as do some tests. Unfortunately I'm unable to write or correct driver code. RegardsArtur -- Każdy problem ma swoje rozwiązanie, zatem jeżeli nie ma rozwiązania to nie ma problemu. -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html