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tvheadend "scan no data, failed", but VDR works

Added by lmc lmc almost 8 years ago

Hello,

I had my system working with VDR, and I am trying to give tvheadend a shot but without success.

My system:
- chromebox + Geniatech T230 DVB-C USB stick
- HTS Tvheadend 4.1.1945 ~ LibreELEC Tvh-addon v7.0.102
- Kodi jarvis

What i have done so far:

- disable vdr and enable tvheadend
- run w_scan to find muxes (w_scan.log)
- enabled tvheadend debug (debug.png)
- tvheadend configuration:
- tv adapter configured for DVB-C, with network set (tv_adapters.png)
- added my network of type DVB-C, with name "network" (network.png)
- added mux, using information from w_scan (mux.png)
already tried different fec combinations, but without success, always "scan no data"
already added others muxes without success

VDR is working well, it finds the channels without problems and i could see them without problems also, why tvheadend doesnt, could someone help me?
I also attached dmesg log (dmesg.log) and tvheadend log (tvhe.log)

Thank you

debug.png (55 KB) debug.png
dmesg.log (45.2 KB) dmesg.log
mux.png (85.5 KB) mux.png
network.png (83.7 KB) network.png
tv_adapters.png (78.7 KB) tv_adapters.png
w_scan.log (1.3 KB) w_scan.log
tvhe.log (342 KB) tvhe.log

Replies (8)

RE: tvheadend "scan no data, failed", but VDR works - Added by Mark Clarkstone almost 8 years ago

Try removing the additional zeros from the symrate, so just use "6875" or maybe just "0".

RE: tvheadend "scan no data, failed", but VDR works - Added by lmc lmc almost 8 years ago

Thank you your help.

I tried that but i receive "Invalid argument error"

chromebox:~ # cat tvhe_2.log 
2016-12-31 10:55:59.895 [  DEBUG]:mpegts: network - adding mux 474MHz in network to scan queue weight 6 flags 4000
2016-12-31 10:55:59.895 [  DEBUG]:mpegts: 474MHz in network - add raw service
2016-12-31 10:55:59.895 [   INFO]:mpegts: 474MHz in network - tuning on Silicon Labs Si2168 : DVB-C #0
2016-12-31 10:55:59.895 [  DEBUG]:linuxdvb: Silicon Labs Si2168 : DVB-C #0 - starting 474MHz in network
2016-12-31 10:55:59.895 [  TRACE]:linuxdvb: Silicon Labs Si2168 : DVB-C #0 - tuning
2016-12-31 10:55:59.895 [  TRACE]:linuxdvb: Silicon Labs Si2168 : DVB-C #0 - frontend clear
2016-12-31 10:55:59.895 [  TRACE]:linuxdvb: tuner Silicon Labs Si2168 : DVB-C #0 tunning to DVB-C freq 474000000 sym 6875 mod QAM/256 fec AUTO (freq -1)
2016-12-31 10:55:59.895 [  TRACE]:linuxdvb: S2CMD 17 => 1
2016-12-31 10:55:59.895 [  TRACE]:linuxdvb: S2CMD 03 => 474000000
2016-12-31 10:55:59.895 [  TRACE]:linuxdvb: S2CMD 06 => 2
2016-12-31 10:55:59.895 [  TRACE]:linuxdvb: S2CMD 08 => 6875
2016-12-31 10:55:59.895 [  TRACE]:linuxdvb: S2CMD 04 => 5
2016-12-31 10:55:59.895 [  TRACE]:linuxdvb: S2CMD 09 => 9
2016-12-31 10:55:59.895 [  TRACE]:linuxdvb: S2CMD 01 => 0
2016-12-31 10:55:59.895 [  ERROR]:linuxdvb: Silicon Labs Si2168 : DVB-C #0 - failed to tune [e=Invalid argument]
2016-12-31 10:56:00.026 [  TRACE]:mpegts: network-list: found input 'Silicon Labs Si2168 : DVB-C #0'
2016-12-31 10:56:00.026 [  TRACE]:linuxdvb: Silicon Labs Si2168 : DVB-C #0: network list for DVB-C
2016-12-31 10:56:00.677 [  TRACE]:mpegts: network-list: found input 'Silicon Labs Si2168 : DVB-C #0'
2016-12-31 10:56:00.677 [  TRACE]:linuxdvb: Silicon Labs Si2168 : DVB-C #0: network list for DVB-C

Also tried with sym = 0 with same result.
Thanks

RE: tvheadend "scan no data, failed", but VDR works - Added by Mark Clarkstone almost 8 years ago

lmc lmc wrote:

Thank you your help.

I tried that but i receive "Invalid argument error"

[...]

Also tried with sym = 0 with same result.
Thanks

This might be a long shot but what about 687500000 or even 6875000000 ? :p

RE: tvheadend "scan no data, failed", but VDR works - Added by lmc lmc almost 8 years ago

No joy also, tried with 6875, 68750, 687500, 68750000, 687500000 and 687500000, always with "Invalid argument error". I think that the unit of the value is ok, if i have 6875KS/s then i have to input 6875000 int the field of tvheadend.

One funny thing is, when i receive "Invalid argument error", i have to restart tvheadend because it wont start scanning again when i hit force scan button, strange.

I check my mux data with my tv configuration, tried different muxes, and nothing happens, so frustrating.

Thank you

RE: tvheadend "scan no data, failed", but VDR works - Added by Joe User almost 8 years ago

I don't have a dvb-c tuner to test with, but have you checked the QAM setting?

RE: tvheadend "scan no data, failed", but VDR works - Added by Joe User almost 8 years ago

Also, probably not yourproblem,but are you sure it is dvb-c? My cable provider sends both dvb-c and dvb-t..
Does scan/w_Scan find the channels?
Are you certain vdr is stopped and nothing else is using the tuner?

RE: tvheadend "scan no data, failed", but VDR works - Added by lmc lmc almost 8 years ago

I tried in every QAM options, despite of the correct one be QAM256.
I just used w_scan data, you could see output from it in my first post, and it finds the channels with DVB-C option.
VDR is stopped for sure, i stop tvheadend when using w_scan also.
Maybe this is related with tvheadend version?

RE: tvheadend "scan no data, failed", but VDR works - Added by lmc lmc almost 8 years ago

I installed tvheadend in my laptop, version HTS Tvheadend 4.0.9-16~g63c1034~wheezy, follow the same steps as above and was able to find all of dvb-c channels.
So i turn around for tvheadend version, fortunately i have version 4.0 in my libreelec repo, i installed it and no joy also.
So i think about changing my stick firmware version, it was dvb-demod-si2168-b40-01.fw version 4.0.25, i changed it to 4.0.4 and voila, tvheadend was able to find all my channels.
So, tried version 4.0.7 and also works, tried version 4.0.11 and works, tried version 4.0.19 and it fails!

Conclusion:
For si2168 firmware version 4.0.4 -> 4.0.11 tvheadend could work properly, version 4.0.25 and 4.0.19 it doesnt work.
Maybe it is a tvheadend problem because VDR works well.

Thank you

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