Christopher, i havn't this option and acpi_backlight=vendor no effect to this problem. I try add this after second comment Quinn Balazs (qbalazs) wrote on 2013-11-12: #2 Please run "apport-collect 1249219" in order to collect some useful logs.
I think adding the boot flag of "acpi_backlight=vendor" on your next boot should make the values change in /sys/class/backlight/intel_backlight/brightness. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1249219 Title: backlight control acpi_video0 instead intel_backlight To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1249219/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
