it's a g-p-m bug https://bugs.launchpad.net/ubuntu/+source/gnome-power-manager/+bug/302570
install the ppa from here. works on my 900, https://launchpad.net/~robert-pobice/+archive/ppa
it's a g-p-m bug https:/ /bugs.launchpad .net/ubuntu/ +source/ gnome-power- manager/ +bug/302570
install the ppa from here. works on my 900, https:/ /launchpad. net/~robert- pobice/ +archive/ ppa