Linux Kernel 3.19 and newer changed the Logitech Unifying Receiver driver to logitech-hidpp-device. With this change the 95-upower-csr.rules needs updating. See the PATCH at: http://cgit.freedesktop.org/upower/commit/?id=f8104a112eb967cd4c2aaf57b5a59aafe7c4738f
Closing for inactivity. I moved to upower-0.99 which is supported properly by MATE by now. And newer kernels require somewhat up-to-date upower-0.99 anyway to function properly for logitech unified devices.