Alright, I got it. If I use the generic-pae kernel, Virtualbox won't work. So I set my grub to automatically boot to the -generic (without pae) kernel -- the power management option works and so does Virtualbox. Finally! {I'm happy at least for now.}
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/568611 Title: Screen brightness control fails on Dell Studio 1558 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs