In this case, we can ask BIOS to create an extra WMI method for us to adjust the brightness from software during the development period. But it's too late to discuss with them.
Or we could ask BIOS to remove all _BCL, _BCM method in the BIOS, so that the system won't create any acpi_video* directories under /sys/class/backlight/ , so there won't be a brightness sliderbar in the birghtness GUI. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1203982 Title: [Dell Inspiron One 2020] Unable to adjust screen brightness To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1203982/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
