installing "laptop-mode-tools" (sudo apt-get install laptop-mode-tools) fixed the problem here. I'd try that before downgrading.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/656745 Title: notebook crashes on battery with particular wlan or other pcie devices enabled (dell vostro 3700, asus, medion, acer and others) -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs