P.J.Lin, following https://wiki.ubuntu.com/Kernel/Debugging/Backlight would changing your grub line from: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
to either of the following allow you to change the brightness: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor" GRUB_CMDLINE_LINUX_DEFAULT="quiet splash video.use_bios_initial_backlight=0" -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1279282 Title: There are no LCD backlight brightness function and OSD with Fn hot keys under Ubuntu 13.10. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1279282/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
