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Dvb-s2: scan fails

Added by Peter Wriesnik almost 6 years ago

Hello!

I just installed my new DVB-S2 card, a TBS 6928 with an Irdeto CI module. I got it working under ubuntu 15.10 with kernel 4+ using https://bitbucket.org/CrazyCat/linux-tbs-drivers/. lspci-v shows the device with an saa driver.

TVH 4 also recognizes the card under adapters. I then did this: http://m.youtube.com/watch?v=IK2krP-oC-E but when forcing a scan, tvheadend shows a scan failed message.

I know that this is a rather short summary, I will provide a more detailed documentation of what I did if required when I'm back at the machine.

Thanks so far.


Replies (11)

RE: Dvb-s2: scan fails - Added by Peter Wriesnik almost 6 years ago

So, here is some more information:

The system:

uname -a
Linux htpc 4.2.0-23-generic #28-Ubuntu SMP Sun Dec 27 17:47:31 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

The adapter:

sudo lspci -v
01:00.0 Multimedia controller: Philips Semiconductors SAA7160 (rev 03)
Subsystem: Device 6928:0002
Flags: bus master, fast devsel, latency 0, IRQ 16
Memory at df200000 (64-bit, non-prefetchable) [size=1M]
Capabilities: [40] MSI: Enable- Count=1/32 Maskable- 64bit+
Capabilities: [50] Express Endpoint, MSI 00
Capabilities: [74] Power Management version 2
Capabilities: [80] Vendor Specific Information: Len=50
Capabilities: [100] Vendor Specific Information: ID=0000 Rev=0 Len=088
Kernel driver in use: SAA716x TBS

TVH:

tvheadend: version 4.0.8-3~gc870eb9~wily

Log file entries:

cat /var/log/syslog
Jan 14 08:17:16 htpc tvheadend[673]: mpegts: 11953.5H in Astra - tuning on TurboSight TBS 6928SE DVBS/S2 frontend : DVB-S #0
Jan 14 08:17:16 htpc tvheadend[673]: subscription: 000C: "scan" subscribing to mux "11953.5H", weight: 2, adapter: "TurboSight TBS 6928SE DVBS/S2 frontend : DVB-S #0", network: "Astra", service: "Raw PID Subscription"
Jan 14 08:17:19 htpc tvheadend[673]: mpegts: 11953.5H in Astra (0x1a71740) - deleting
Jan 14 08:17:19 htpc tvheadend[673]: subscription: 000C: "scan" unsubscribing

I really haven't found anything in the wiki and on the forum, help would be really appreciated.

Thanks!

RE: Dvb-s2: scan fails - Added by Mark Clarkstone almost 6 years ago

I don't see any failed messages there..

RE: Dvb-s2: scan fails - Added by Peter Wriesnik almost 6 years ago

Sorry, posted the wrong logfile-part. There you go:

2016-01-14 15:49:46.000 mpegts: 12551.5V in Astra - tuning on TurboSight TBS 6928SE DVBS/S2 frontend : DVB-S #0
2016-01-14 15:49:46.038 opentv-skyuk: registering mux 12551.5V in Astra
2016-01-14 15:49:46.038 subscription: 000D: "scan" subscribing to mux "12551.5V", weight: 5, adapter: "TurboSight TBS 6928SE DVBS/S2 frontend : DVB-S #0", network: "Astra", service: "Raw PID Subscription"
2016-01-14 15:49:56.004 mpegts: 12551.5V in Astra - scan no data, failed
2016-01-14 15:49:56.004 subscription: 000D: "scan" unsubscribing

Changing the frequency of the mux as stated by one of the available TV station (ATV HD in Austria) to 11244000Hz didn't change a thing:

2016-01-14 15:51:12.751 mpegts: 11244V in Astra - tuning on TurboSight TBS 6928SE DVBS/S2 frontend : DVB-S #0
2016-01-14 15:51:12.751 subscription: 0010: "scan" subscribing to mux "11244V", weight: 6, adapter: "TurboSight TBS 6928SE DVBS/S2 frontend : DVB-S #0", network: "Astra", service: "Raw PID Subscription"
2016-01-14 15:51:22.000 mpegts: 11244V in Astra - scan no data, failed
2016-01-14 15:51:22.000 subscription: 0010: "scan" unsubscribing

RE: Dvb-s2: scan fails - Added by Peter Wriesnik almost 6 years ago

A thing that I really don't understand is that TVH only adds one Mux if I add a pre-defined network network 19.2 E Astra. Shouldn't there be more available?

RE: Dvb-s2: scan fails - Added by Gary Brown almost 6 years ago

add this mux in manually

"frequency": 11953500,
"symbol_rate": 27500000,
"fec": "3/4",
"polarisation": "Horizontal",
"modulation": "QPSK",
"delivery_system": "SYS_DVBS",

RE: Dvb-s2: scan fails - Added by Peter Wriesnik almost 6 years ago

Thank you, I will try asap. But just for understanding: shouldn't s network contain more than one mux?

RE: Dvb-s2: scan fails - Added by Gary Brown almost 6 years ago

the dvb-scan files included are old and outdated in tvheadend and they have not been updated in a long time. to update them takes a lot of time and it is quicker to use the auto discovery and adding in a mux and hoping the sat gives you all of them.

I have a motorised dish so have had to add in quite a lot of missing muxes and some of the sats don't broadcast there other muxes so I have had to add a whole sat by hand before.

RE: Dvb-s2: scan fails - Added by Peter Wriesnik almost 6 years ago

Ok, I edited the predefined mux as you posted, still no difference.

2016-01-16 10:27:16.685 mpegts: 11953.5H in Astra - tuning on TurboSight TBS 6928SE DVBS/S2 frontend : DVB-S #0
2016-01-16 10:27:16.723 subscription: 000A: "scan" subscribing to mux "11953.5H", weight: 6, adapter: "TurboSight TBS 6928SE DVBS/S2 frontend : DVB-S #0", network: "Astra", service: "Raw PID Subscription"
2016-01-16 10:27:26.000 mpegts: 11953.5H in Astra - scan no data, failed
2016-01-16 10:27:26.001 subscription: 000A: "scan" unsubscribing

Thanks for your help Gary!

RE: Dvb-s2: scan fails - Added by Gary Brown almost 6 years ago

can you try this one?

"frequency": 10817500,
"symbol_rate": 22000000,
"fec": "2/3",
"polarisation": "Vertical",
"modulation": "PSK/8",
"delivery_system": "DVB-S2"

if this doesn't work can you post more about your setup and location i.e. if you have a single lnb/motor/multi-lnb diseqc.
does dmesg say anything about the card failing?
have you checked the dish is properly aligned?
can you check it can tune in windows?

RE: Dvb-s2: scan fails - Added by Peter Wriesnik almost 6 years ago

Still, no luck.

2016-01-16 21:58:14.765 mpegts: 10817.5V in Astra - tuning on TurboSight TBS 6928SE DVBS/S2 frontend : DVB-S #0
2016-01-16 21:58:14.765 subscription: 013C: "scan" subscribing to mux "10817.5V", weight: 6, adapter: "TurboSight TBS 6928SE DVBS/S2 frontend : DVB-S #0", network: "Astra", service: "Raw PID Subscription"
2016-01-16 21:58:24.000 mpegts: 10817.5V in Astra - scan no data, failed
2016-01-16 21:58:24.000 subscription: 013C: "scan" unsubscribing

About the setup itself, I live in an apartment where the whole building has a shared DVB-S/S2 system that has been installed by somebody else, I can give you more information about it tomorrow. I don't have access to a Windows device right now, all I can do is try to get some details out of a DVB-S2 set-top box. My location is Austria.

Could this maybe be a driver issue? Since the official driver from TBS didn't work - the module just didn't load at system boot - I tried the one from CrazyCat. dmesg didn't show any errors during the scan process.

RE: Dvb-s2: scan fails - Added by Peter Wriesnik almost 6 years ago

Ok, I finally got some more info from the neighbors DVB receiver: he uses the following setup:

19.2 Astra
10744H
22000
5/6
LNB voltage: 13/14V
LNB type: 9750/10600
22kHz Auto
Diseqc enabled

Added the mux, heres the output. I'm really lost here, it can't be that hard to get a DVB-S system to work!

2016-01-22 15:33:55.000 mpegts: 10744H in Astra - tuning on TurboSight TBS 6928SE DVBS/S2 frontend : DVB-S #0
2016-01-22 15:33:55.001 subscription: 0007: "scan" subscribing to mux "10744H", weight: 2, adapter: "TurboSight TBS 6928SE DVBS/S2 frontend : DVB-S #0", network: "Astra", service: "Raw PID Subscription"
2016-01-22 15:34:05.000 mpegts: 10744H in Astra - scan no data, failed
2016-01-22 15:34:05.000 subscription: 0007: "scan" unsubscribing

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