Hi there. I actually already tried the mainline kernel (I tacked that in at the end of the original post). :) Unfortunately it didn't make a difference and acted 100% identical to the 3.8 kernel from the regular Ubuntu install.
On the flip side, a user on the UbuntuForums just gave me a suggestion and it helped. Now my brightness controls work just fine. I had to add the acpi_osi=\"!Windows 2012\ entry in the grub file. Steps: 1) gksu gedit /etc/default/grub 2) change GRUB_CMDLINE_LINUX="" to read GRUB_CMDLINE_LINUX="acpi_osi=\"!Windows 2012\"" 3) sudo update-grub Now it works fine! Is this something that could somehow be integrated into the system by default? A quick Google search of this yielded quite a number of results in the last year with various laptop models where users had to add that entry. Thanks for any info! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1180156 Title: Brightness keys not working Lenovo E430. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1180156/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
