Since the 2.6.27-11 generic kernel (also in 2.6.27-12) I cannot change the backlight brightness anymore. In the latest kernel, it seems there's no more file in /proc/acpi/video, but GFX0 still apears in 2.6.27-9 where I can still change brightness. I'm new to linux so if you need information give me the command to run.
Since the 2.6.27-11 generic kernel (also in 2.6.27-12) I cannot change the backlight brightness anymore. In the latest kernel, it seems there's no more file in /proc/acpi/video, but GFX0 still apears in 2.6.27-9 where I can still change brightness. I'm new to linux so if you need information give me the command to run.