I have a similar problem with a lenovo x230 recently upgraded from 13.10 to 14.04 and lost backlight control both with hot keys and using gnome settings (this is ubuntu GNOME). Fix in the x11 conf doesn't work for me. I have two entries in my /sys/class/backlight
intel_backlight and thinkad_screen. As with the previous poster, the settings slider changes thinkpad_screen/brightness but not intel_backlight/brightness. I can manually change the brightness by modifyng the value under intel_backlight. -- 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
