The WLAN module of the Medion Akoya E1318T has under Linux some problems, also with a recent kernel. The WLAN works, but the connection speed drops very fast to zero. This problem can be solved with a little configuration file.
Create under this folder:
/etc/modprobe.d/
with root privileges this file:
rtl8723be.conf
and insert this content in the file:
options rtl8723be fwlps=0 swlps=0
After a reboot, the WLAN should work properly!