I install driver official in my two cards tbs6909 (Ubuntu 16.04.3 LTS (GNU/Linux 4.13.0-26-generic x86_64) ), but i write in dmesg | grep front: [ 38.909257] TBSECP3 driver 0000:01:00.0: DVB: registering adapter 0 frontend 0 (TurboSight TBS 6909 DVB-S/S2 )... [ 39.018015] TBSECP3 driver 0000:01:00.0...