It sounds to me that you may have lost IMEI partition. Go to settings > about phone > baseband version (or IMEI Information) if it says 'Unknown' then you have lost efs.
If you did a backup before flashing the ROM flash the backup and this shoul...
I have the same issue >> Notification right swipe creates a blank duplicate notification:
I have tasted on my galaxy s5 G900P and it is SUPER FAST AND SMOTH i have updated the new kernel now it is MORE faster no problem just xposed not working
Bro where did you download mm bootlaoader and modem for g900p?...