Ok, the brightness changing works again throug acpi-support update but the bug still appears even with sony-laptop module. It seems that sony-laptop has no similar option like brightness_default and it doesn't save the values permanent.
Ok, the brightness changing works again throug acpi-support update but the bug still appears even with sony-laptop module. It seems that sony-laptop has no similar option like brightness_default and it doesn't save the values permanent.