Thanks, it works on Lenovo B580 but only in combination of both "acpi_backlight=vendor" and "80-backlight.conf". Minor issue is screen switching off on minimum brightness but it doesn't bother me.
Thanks, it works on Lenovo B580 but only in combination of both "acpi_backlight =vendor" and "80-backlight. conf".
Minor issue is screen switching off on minimum brightness but it doesn't bother me.