I have the same problem with Lenovo Ideapad Y450 laptop. With Jaunty Live CD, the brightness control worked. But after installation and update, it doesn't wok anymore. The file "/proc/acpi/video/VGA/LCD/brightness" is updated with the Fn+arrow_keys, but the bightness just don't change.
If any input is required, I can help too. -- Cannot change brightness with 2.6.27-11+ kernel https://bugs.launchpad.net/bugs/333386 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