I appologize for the poorly written original bug report. I was very tired and had been working on this for some time.
As mentioned at https://wiki.ubuntu.com/Kernel/Debugging/Backlight, I think that it may be helpful if I include that I do have entries in /sys/class/backlight. I can change brightness by issuing the below command ~$ echo 150 | sudo tee /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/1307064 Title: Ubuntu 14.04 Beta cannot adjust brightness on Lenovo Ideapad Z570 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1307064/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
