Igen ez lehet gond.
# w_scan -ft -c HU --output-mplayer > ~/channels.conf
w_scan -ft -c HU --output-mplayer
w_scan version 20170107 (compiled for DVB API 5.11)
using settings for HUNGARY
Country identifier HU not defined. Using defaults.
scan type TERRESTRIAL, channellist 4
output format mplayer
output charset 'UTF-8', use -C <charset> to override
Info: using DVB adapter auto detection.
main:4004: FATAL: ***** NO USEABLE TERRESTRIAL CARD FOUND. *****
Please check wether dvb driver is loaded and
verify that no dvb application (i.e. vdr) is running.