It sounds like this bug was fixed in v3.2-rc1 and then another regression was introduced at some point.
Since v3.2-rc2 also works, can you test some of the later release candidates to identify the first one that introduced this bug? For example, -rc3, rc4, etc: v3.2-rc3: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.2-rc3-oneiric/ v3.2-rc4: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.2-rc4-oneiric/ v3.2-rc5: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.2-rc5-oneiric/ ... ** Changed in: linux (Ubuntu Precise) Status: Confirmed => Incomplete ** Changed in: linux (Ubuntu Quantal) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/992720 Title: [Lenovo E420s] Hitting brightness keys causes machine to lock up To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/992720/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
