OpenSUSE Tumbleweed on x86_64.  POssibly relevant software:
$ rpm -qa | grep -i blue
pulseaudio-module-bluetooth-5.0-9.1.x86_64
libgnome-bluetooth13-3.14.0-1.1.x86_64
libbluedevil2-2.0~rc1-3.1.x86_64
bluez-5.25-1.1.x86_64
typelib-1_0-GnomeBluetooth-1_0-3.14.0-1.1.x86_64
libbluetooth3-5.25-1.1.x86_64
bluedevil-2.0~rc1-5.1.x86_64
bluedevil-lang-2.0~rc1-5.1.noarch
gnome-bluetooth-3.14.0-1.1.x86_64

I am using KDE.

$ ps ax | grep -i blue
 1379 ?        Ss     0:00 /usr/lib/bluetooth/bluetoothd
 1933 ?        S      0:00 /usr/lib/bluetooth/obexd
 2091 ?        Sl     0:00 /usr/bin/bluedevil-monolithic
14162 ?        S      0:00 /usr/bin/kcmshell4 bluedevildevices
bluedeviltransfer bluedeviladapters
14191 pts/2    S+     0:00 grep --color=auto -i blue

I have a Microsoft Sculpt bluetooth mouse.  I had it working under 13.1, but I
unfortunately do not know what I did to get it working properly.  The OUI for
this mouse is: 28:18:78

I can pair the mouse successfully, and it works fine.  However, when it is not
moved for a while, the mouse goes into a power-save mode and the result is that
it disconnects from my system.  When I move the mouse, I can see it try to
re-connect; the bluetooth icon in the system tray blinks.  If I have the
bluetooth configuration page up, I can see the entry for the mouse change for a
moment; the rightmost "ball" turns green and then back to gray.  If the mouse
is selected in the bluetooth configuration, after this, it is no longer
selected.

I can resolve the problem until the mouse goes to sleep again by putting the
mouse into pairing mode and then select "Connect" from the bluetootk
configuration page.

This might the same bug from Ubuntu:
https://bugs.launchpad.net/ubuntu/+source/bluez/+bug/1094744
https://bugs.launchpad.net/ubuntu/+source/gnome-bluetooth/+bug/1158462