Weird... when I ran "sudo update-manager", the power manager did start -- and it used a brightness settings from somewhere unexpected, like maybe root's profile, because the backlight came on MUCH brighter than when I do a plain "update-manager".
In both cases, the power manager started right as I pressed [install updates]. Out of curiosity, I ran "strace update-manager", and buried in the flood of output was this: sendmsg(3, {msg_name(0)=NULL, msg_iov(2)=[{"l\1\0\1 \0\0\0\6\0\0\0\210\0\0\0\1\1o\0\25\0\0\0/org/fre"..., 152}, {"\26\0\0\0org.gnome.PowerManager\0\0\0\0\0\0", 32}], msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) = 184 Alan -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/714356 Title: update-manager starts gnome-power-manager -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs