If the Flexcop / Technisat is the only DVB / TV / Radio device in your box get rid of unnecessary modules and check this one:
Multimedia support => Customise analog and hybrid tuner modules to build
In this directory uncheck every driver which is activated there (except Simple tuner support for ATSC 3rd generation only -> see case 9 please).
Then please activate:
Main module part:
Multimedia support => DVB/ATSC adapters => Technisat/B2C2 FlexcopII(b) and FlexCopIII adapters
#) => Technisat/B2C2 Air/Sky/Cable2PC PCI (PCI card) or #) => Technisat/B2C2 Air/Sky/Cable2PC USB (USB 1.1 adapter) and for troubleshooting purposes: #) => Enable debug for the B2C2 FlexCop drivers
Frontend / Tuner / Demodulator module part:
Multimedia support => DVB/ATSC adapters => Customise the frontend modules to build Customise DVB frontends =>
SkyStar DVB-S Revision 2.3:
#) => Zarlink VP310/MT312/ZL10313 based #) => Generic I2C PLL based tuners
SkyStar DVB-S Revision 2.6:
#) => ST STV0299 based #) => Generic I2C PLL based tuners
SkyStar DVB-S Revision 2.7:
#) => Samsung S5H1420 based #) => Integrant ITD1000 Zero IF tuner for DVB-S/DSS #) => ISL6421 SEC controller
SkyStar DVB-S Revision 2.8:
#) => Conexant CX24123 based #) => Conexant CX24113/CX24128 tuner for DVB-S/DSS #) => ISL6421 SEC controller
AirStar DVB-T card:
#) => Zarlink MT352 based #) => Generic I2C PLL based tuners
CableStar DVB-C card:
#) => ST STV0297 based #) => Generic I2C PLL based tuners
AirStar ATSC card 1st generation:
#) => Broadcom BCM3510
AirStar ATSC card 2nd generation:
#) => NxtWave Communications NXT2002/NXT2004 based #) => Generic I2C PLL based tuners
AirStar ATSC card 3rd generation:
#) => LG Electronics LGDT3302/LGDT3303 based #) Multimedia support => Customise analog and hybrid tuner modules to build => Simple tuner support