Raspberry Pi 4, Mate 20.04 beta2 TV hat

Support & Help Requests Raspberry Pi
#1

Hello, I have a problem with setting a TV hat on RPI 4, Mate 20.04.
I installed a tvheadend from snap , but it not see it.

I tried dtoverlay=rpi-tv but did not help,

also
insmod /boot/modules/cxd288-spi.ko
insmod /boot/modules/cxd288.ko

as suggested here but they do not exist.

#2 
 dmesg | grep 2880
[    5.580731] dvbdev: DVB: registering new adapter (CXD2880)
[    5.625494] cxd2880: cxd2880_attach: CXD2880 driver version: Ver 1.4.1 - 1.0.5
[    5.625509] cxd2880 spi0.0: DVB: registering adapter 0 frontend 0 (Sony CXD2880)...
[    5.626153] cxd2880_spi: cxd2880_spi_probe: Sony CXD2880 has successfully attached.

Dmesg see it, but tvheadend not.