Configure number of frontends created for DVB adapter

Terrible Tadpole

2/19/24, 9:53 AM

I just replaced my old MythTV server (a NUC5) box with a newer NUC11 box. The O/S on the old box was fully updated so the kernel version is the same. I have also kept the same tuner bank of four USB Avermedia AverTV Volar Green HD tuners. On the old box each USB tuner had two frontends, so I had a total of 8 available tuner channels. On the new box each tuner has only one frontend so I have 4 tuner channels.

My question is: Is the frontend count a configurable parameter? Alternatively, does this indicate a problem with available USB bandwidth from the tuner bank?

I have Ubuntu 22.04.02 LTS with kernel 5.19.0-32-generic.

dvb-fe-tool reports:

Device Afatech AF9033 (DVB-T) (/dev/dvb/adapter0/frontend0) capabilities:  
     CAN_FEC_1_2  
     CAN_FEC_2_3  
     CAN_FEC_3_4  
     CAN_FEC_5_6  
     CAN_FEC_7_8  
     CAN_FEC_AUTO  
     CAN_GUARD_INTERVAL_AUTO  
     CAN_HIERARCHY_AUTO  
     CAN_INVERSION_AUTO  
     CAN_MUTE_TS  
     CAN_QAM_16  
     CAN_QAM_64  
     CAN_QAM_AUTO  
     CAN_QPSK  
     CAN_RECOVER  
     CAN_TRANSMISSION_MODE_AUTO  
DVB API Version 5.11, Current v5 delivery system: DVBT  
Supported delivery system:   
    [DVBT]  
Frequency range for the current standard:   
From:             174 MHz  
To:               862 MHz  
Step:             250 kHz

Let me know if more information is required.

0 + 0

usb

kernel

dvb-t

Elon Musk

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EN: Configure number of frontends created for DVB adapter

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