just installed LibreELEC v7.90.001 ALPHA on a rasberry pi 2.
Besides, I have a tvheadend server (git, 4.1.r2104) running on an arch linux system (3.10.96-2). The service works fine on LibreELEC v7.0.1 as well as on OpenELEC.
The Problem: LibreELEC v7.90.001 does not provide an option to enable live TV.
On v7.0.1 it looks like
and on v.7.90.001 it looks like
-- no option to activate live tv.
Note: I installed and configured tvheadend PVR client.