problem on ubuntu

Hello
I installed ubuntu 14.04 but i have problem with tvheadend.dont search any channels.but astra is good and working fine
i tested bot 32 and 64 bit but on both tvheadend dont have signal and dont search
I installed ubuntu 14.04 but i have problem with tvheadend.dont search any channels.but astra is good and working fine
i tested bot 32 and 64 bit but on both tvheadend dont have signal and dont search