I have the same problem on my Lenove ideapad u350 32-bit. I get the folowing from dmesg when pressing Fn+Up/Down:
[ 3024.700954] ACPI: Failed to switch the brightness [ 3025.561165] ACPI: Failed to switch the brightness kernel: 2.6.32-21-generic Setting the brightness with setpci as Marting describes works. Hope someone can work out a patch. ** Summary changed: - Screen brightness not controllable on Lenovo Ideapad S10-3 + Screen brightness not controllable on Lenovo Ideapad S10-3 and U350 -- Screen brightness not controllable on Lenovo Ideapad S10-3 and U350 https://bugs.launchpad.net/bugs/538256 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
