Thank you for taking the time to report this bug and helping to make Ubuntu better. This is a known problem with some ACPI backlight drivers.
Please read this article in order to debugging more this issue https://wiki.ubuntu.com/Kernel/Debugging/Backlight Please provide the additional information that are needed according to above article. Best Regards NikTh ** Package changed: gnome-control-center (Ubuntu) => ubuntu ** Changed in: ubuntu Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1254376 Title: Brightness settings changes have no effect. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1254376/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
