Comment 30 for bug 1167114

Well, some success here... I was also troubleshooting some battery life issues; namely why another T530 user was seeing 7+ hrs life vs. less than 3 for me. Turns out I didn't have separate drivers installed for my nVidia Optimus card. I added the drivers using the instructions here: https://wiki.ubuntu.com/Bumblebee and suddenly I can boot up with kernel 3.5.0-27 no problemo - and battery life is considerably improved.