DVB-S Device not showing up.

cncnerd

I can't tell exactly when, but one of the last updates have made my DVB-S adapter disappear.
I have 1 TBS 6522H and 1 TBS 6281SE installed. So I have 6 DVB-T and 2 DVB-S tuners available. I have had my antenna out of order for a few month and now that I have set it up again my DVB-S tuners are gone. The card still shows the two DVB-T Tuners in the TVHeadend interface, but no DVB-S tuners.

My system is:
Linux mediaserver 6.1.0-21-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.90-1 (2024-05-03) x86_64 GNU/Linux

TVHeadend is:
tvheadend: version 4.3-2323~g73a6bd00d

dvb-fe-tool for all my adapters returns:

Device TurboSight TBS 6522H Dual DVBS/S2x + Dual DVB-T/T2/ (/dev/dvb/adapter0/frontend0) capabilities:
     CAN_2G_MODULATION
     CAN_FEC_1_2
     CAN_FEC_2_3
     CAN_FEC_3_4
     CAN_FEC_4_5
     CAN_FEC_5_6
     CAN_FEC_7_8
     CAN_FEC_AUTO
     CAN_GUARD_INTERVAL_AUTO
     CAN_INVERSION_AUTO
     CAN_MUTE_TS
     CAN_QAM_16
     CAN_QAM_32
     CAN_QAM_64
     CAN_QAM_128
     CAN_QAM_256
     CAN_QAM_AUTO
     CAN_RECOVER
     CAN_TRANSMISSION_MODE_AUTO
DVB API Version 5.12, Current v5 delivery system: DVBT
Supported delivery systems:
    [DVBT]
     DVBT2
     ISDBT
     DVBC/ANNEX_A
     DVBC/ANNEX_B
     DVBC/ANNEX_C
     ATSC
Frequency range for the current standard:
From:             174 MHz
To:               868 MHz
Step:             250 kHz

Device TurboSight TBS 6522H Dual DVBS/S2x + Dual DVB-T/T2/ (/dev/dvb/adapter1/frontend0) capabilities:
     CAN_2G_MODULATION
     CAN_FEC_1_2
     CAN_FEC_2_3
     CAN_FEC_3_4
     CAN_FEC_4_5
     CAN_FEC_5_6
     CAN_FEC_7_8
     CAN_FEC_AUTO
     CAN_GUARD_INTERVAL_AUTO
     CAN_INVERSION_AUTO
     CAN_MUTE_TS
     CAN_QAM_16
     CAN_QAM_32
     CAN_QAM_64
     CAN_QAM_128
     CAN_QAM_256
     CAN_QAM_AUTO
     CAN_RECOVER
     CAN_TRANSMISSION_MODE_AUTO
DVB API Version 5.12, Current v5 delivery system: DVBT
Supported delivery systems:
    [DVBT]
     DVBT2
     ISDBT
     DVBC/ANNEX_A
     DVBC/ANNEX_B
     DVBC/ANNEX_C
     ATSC
Frequency range for the current standard:
From:             174 MHz
To:               868 MHz
Step:             250 kHz

Device TurboSight TBS 6522H Dual DVBS/S2x + Dual DVB-T/T2/ (/dev/dvb/adapter2/frontend0) capabilities:
     CAN_2G_MODULATION
     CAN_FEC_AUTO
     CAN_INVERSION_AUTO
     CAN_MULTISTREAM
     CAN_QPSK
     CAN_RECOVER
DVB API Version 5.12, Current v5 delivery system: DVBS
Supported delivery systems:
    [DVBS]
     DVBS2
Frequency range for the current standard:
From:             950 MHz
To:              2,15 GHz
Symbol rate ranges for the current standard:
From:            1,00 MBauds
To:              45,0 MBauds
SEC: set voltage to OFF

Device TurboSight TBS 6522H Dual DVBS/S2x + Dual DVB-T/T2/ (/dev/dvb/adapter3/frontend0) capabilities:
     CAN_2G_MODULATION
     CAN_FEC_AUTO
     CAN_INVERSION_AUTO
     CAN_MULTISTREAM
     CAN_QPSK
     CAN_RECOVER
DVB API Version 5.12, Current v5 delivery system: DVBS
Supported delivery systems:
    [DVBS]
     DVBS2
Frequency range for the current standard:
From:             950 MHz
To:              2,15 GHz
Symbol rate ranges for the current standard:
From:            1,00 MBauds
To:              45,0 MBauds
SEC: set voltage to OFF

Device TurboSight TBS 6281SE DVB-T/T2/C  (/dev/dvb/adapter4/frontend0) capabilities:
     CAN_2G_MODULATION
     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_MULTISTREAM
     CAN_MUTE_TS
     CAN_QAM_16
     CAN_QAM_32
     CAN_QAM_64
     CAN_QAM_128
     CAN_QAM_256
     CAN_QAM_AUTO
     CAN_QPSK
     CAN_TRANSMISSION_MODE_AUTO
DVB API Version 5.12, Current v5 delivery system: DVBT
Supported delivery systems:
    [DVBT]
     DVBT2
     DVBC/ANNEX_A
     DVBC/ANNEX_B
Frequency range for the current standard:
From:            48,0 MHz
To:               870 MHz
Step:            62,5 kHz
Device TurboSight TBS 6281SE DVB-T/T2/C  (/dev/dvb/adapter5/frontend0) capabilities:
     CAN_2G_MODULATION
     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_MULTISTREAM
     CAN_MUTE_TS
     CAN_QAM_16
     CAN_QAM_32
     CAN_QAM_64
     CAN_QAM_128
     CAN_QAM_256
     CAN_QAM_AUTO
     CAN_QPSK
     CAN_TRANSMISSION_MODE_AUTO
DVB API Version 5.12, Current v5 delivery system: DVBT
Supported delivery systems:
    [DVBT]
     DVBT2
     DVBC/ANNEX_A
     DVBC/ANNEX_B
Frequency range for the current standard:
From:            48,0 MHz
To:               870 MHz
Step:            62,5 kHz

But in TVHeadend, this is what shows up:

Does somebody have an idea what could be wrong?

Best regards

cncnerd

ok... after a long search I've found a "workaround" ( I would not call this a fix ).

For some reason, my DVB-S adapter needs a bit longer to initialize itself upon boot. Since I've installed TVHeadend from the DEB package available in the repositories and I've enabled it to run on boot, TVHeadend gets started too early, not picking up all adapters. Therefore I've disabled the auto-start flag from the service and I'm starting TVHeadend from crontab after a 10 second delay. Everything works now.

Regards

DeltaMikeCharlie

You could also try editing /usr/lib/systemd/system/tvheadend.service and adding an ExecStartPre with a sleep command prior to the ExecStart.

cncnerd

Thanks, will check that.

Flole

The "correct" systemd-approach is probably using a timer, as with modifying the service it will wait even when you just want to restart the server, increasing the startup time. A timer will only delay the startup on/after system boot.