To always add acpi_backlight=vendor to your kernel, edit the /etc/default/grub file by running:
gksu gedit /etc/default/grub and edit the following line: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" into: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor" Save, and run: sudo update-grub -- Screen brightness control fails on Dell Studio 1558, Lenovo Ideapad Z360 https://bugs.launchpad.net/bugs/568611 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
