SCR / Unicable

MS Schw

Hello,

at the moment I have XBMC running togeather with VDR. But I'm not very satisfied. It takes realy long to switch the channels.

I hope that tvheadend is much quicker at this point and want to give it a try.

One big Problem:

...I'm a unicable user.....

I've searched the forum to find a HowTo for me as an Unicable user.

The only thing I've found is, that I have to patch the Kernel.

As I'm not very familar how this works (OK I heave done it befor, but this is about 10 years ago)

Does somebody heave a howto for me including a download link for the patch, so that I can achieve this?

What I've got:

DVB-Card:

Digital Devices Cine2 v6

lspci \-vv
01:00.0 Multimedia controller: Digital Devices GmbH Octopus LE DVB adapter
Subsystem: Digital Devices GmbH Device 0002
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 4 bytes
Interrupt: pin A routed to IRQ 16
Region 0: Memory at fbef0000 (64-bit, non-prefetchable) [size=64K]
Capabilities: [50] Power Management version 3
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [70] MSI: Enable- Count=1/2 Maskable- 64bit+
Address: 0000000000000000 Data: 0000
Capabilities: [90] Express (v1) Endpoint, MSI 00
DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <64ns, L1 <1us
ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop-
MaxPayload 128 bytes, MaxReadReq 512 bytes
DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr- TransPend-
LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s, Latency L0 unlimited, L1 <1us
ClockPM- Surprise- LLActRep- BwNot-
LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk-
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk- DLActive- BWMgmt- ABWMgmt-
Capabilities: [100 v1] Vendor Specific Information: ID=0000 Rev=0 Len=00c <?>
Kernel driver in use: DDBridge

Kernel modules: ddbridge

uname -a
Linux homeserver 3.2.0-43-generic #68-Ubuntu SMP Wed May 15 03:33:33 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

Matthias Strack

Here ist the SCR Kernel Patch for Kernel 3.7.10 -> http://m74.libra.uberspace.de/oc/public.php?service=files&t=043415c123c4bfebee678f97b3be8dc8 You have to build a new Kernel with this Patch, Howto: http://www.howtoforge.com/kernel_compilation_ubuntu -> patching Kernel https://www.kernel.org/doc/Documentation/applying-patches.txt

After that, you have to configure the Kernel SCR Parameters with the dcv-scr-setup tool (included in the Patch)

Hope it helps.

MS Schw

thanx!

Stefan Seyfried

Instead of a strange kernel patch which you'll need to apply again and again, you could also try the code I posted to the feature tracker https://tvheadend.org/issues/1752 :)

Matthias Strack

Native SCR in TVHeadend!!!

Great!!!

MS Schw

Uhh

Yea

That sounds great!

I'll give it a try this week and let you know if it worked for me.

Matthias Strack

Jun 9 19:35:36 cucumber tvheadend[14043]: en50494: uni_scr out of range

Jun 9 19:35:36 cucumber tvheadend[14043]: dvb: en50494 setup failed -1

Any idea what wrong there?
I entered my SCR Freq. in the Config, tried it with Channel 0 and 1...still this error.
And no, i dont need a PIN ;)

MS Schw

OK, what do I have to enter where?

I have an "Inverto Unicable Black LNB".

Free SCR Channels are 2 and 3.

Frequency for 2 is 1680 and 3 is 2040

Stefan Seyfried

Your screenshots look good at first glance. Does it work?

I have the following in the config files:

seife@susi:~/.hts/tvheadend> cat dvbadapters/_dev_dvb_adapter0_Montage_Technology_DS3000 { "enabled": 1, "fe_path": "/dev/dvb/adapter0/frontend0", "dmx_path": "/dev/dvb/adapter0/demux0", "dvr_path": "/dev/dvb/adapter0/dvr0", "type": "DVB-S", "displayname": "Montage Technology DS3000", "autodiscovery": 1, "idlescan": 1, "idleclose": 0, "skip_checksubscr": 0, "sidtochan": 0, "qmon": 1, "poweroff": 0, "nitoid": 0, "diseqc_version": 2, "diseqc_repeats": 0, "extrapriority": 0, "skip_initialscan": 0, "disable_pmt_monitor": 0, "full_mux_rx": -1, "grace_period": 0 } seife@susi:~/.hts/tvheadend> cat dvbsatconf/_dev_dvb_adapter0_Montage_Technology_DS3000/2 { "id": "2", "port": 1, "name": "Hotbird unicable", "comment": "hotbird unicable entry", "lnb": "Universal", "uni_scr": 2, "uni_qrg": 1280, "uni_pin": -1 } seife@susi:~/.hts/tvheadend> cat dvbsatconf/_dev_dvb_adapter0_Montage_Technology_DS3000/3 { "id": "3", "port": 0, "name": "Astra unicable", "comment": "astra unicable entry", "lnb": "Universal", "uni_scr": 2, "uni_qrg": 1280, "uni_pin": -1 } seife@susi:~/.hts/tvheadend> cat dvbsatconf/_dev_dvb_adapter0_Montage_Technology_DS3000/1 { "id": "1", "port": 0, "name": "Default (Port 0, Universal LNB)", "comment": "Default satconf entry", "uni_scr": 2, "uni_qrg": 1280, "uni_pin": -1 }

Can you also show your "Multiplexes" tab?

Matthias strack: the out of range message is triggered by uni_scr (SCR channel #) is < 0 or > 7, so it would be interesting to see your config file for the adapter. The parameter is named "uni_scr" in there (see above :))

Unfortunately I'm on the road this week and cannot really test. I have an USB tuner box with me, but no signal, so only theoretical tests are possible :)

I don't use the default entry but the entries 2 and 3. The difference between astra and hotbird is only the port which is interpreted as the "bank switch" bit, switching to input A or B.

Matthias Strack

{ "id": "1", "port": 0, "name": "Default (Port 0, Universal LNB)", "comment": "Default satconf entry", "lnb": "Universal", "uni_scr": 1, "uni_qrg": 1210, "uni_pin": -1 }

This is my config, still the same error.

Stefan Seyfried

If you add the initial mux (for Astra) for example, you should have a ~/.hts/tvheadend/dvbmuxes/<your_adapter_name>/<your_adapter_name>_satconf_?

in my case (with a different adapter, but still no signal to test...):


seife@susi:~/.hts/tvheadend> ls dvbmuxes/_dev_dvb_adapter0_Technisat_SkyStar_USB_HD__DVB_S_S2_/ -l
total 4
-rwx------ 1 seife users 322 11. Jun 10:58 _dev_dvb_adapter0_Technisat_SkyStar_USB_HD__DVB_S_S2_12551500_V_satconf_2

this inital satconf contains:

{ "quality": 100, "enabled": 1, "status": "Unknown", "transportstreamid": 65535, "originalnetworkid": 0, "frequency": 12551500, "initialscan": 0, "symbol_rate": 22000000, "fec": "5/6", "polarisation": "Vertical", "modulation": "QPSK", "delivery_system": "SYS_DVBS", "rolloff": "ROLLOFF_35", "satconf": "2" }

Ithink that the "satconf: 2" is important here, as it matches my satconf (I added one for unicable).

But then I'm very new to tvheadend and don't really know how this all plays together. I'll do more test on the weekend once I have a signal to test.

Matthias Strack

cucumber dvbmuxes # ls _dev_dvb_adapter0_Conexant_CX24116_CX24118/ -l total 8 -rwx------ 1 hts video 333 Jun 11 17:13 _dev_dvb_adapter0_Conexant_CX24116_CX2411812031500_H -rwx------ 1 hts video 308 Jun 11 17:15 _dev_dvb_adapter0_Conexant_CX24116_CX2411812551500_V

Content of the satconf


{
        "quality": 100,
        "enabled": 1,
        "status": "Faint signal",
        "transportstreamid": 4,
        "originalnetworkid": 133,
        "network": "ASTRA 1",
        "frequency": 12031500,
        "initialscan": 0,
        "symbol_rate": 27500000,
        "fec": "3/4",
        "polarisation": "Horizontal",
        "modulation": "QPSK",
        "delivery_system": "SYS_DVBS",
        "rolloff": "ROLLOFF_35"
}

Matthias Strack

Well...it works...my fault.
I didnt specify the satellite configuration while adding the muxes.

MS Schw

Hi,

thank you for your reply.

Hi, I had quite a lot of work yesterday, but this afternoon I can have a nother look at the config.

My problem is, that the button "Map the DVB-Services to channels" doesn't activate. So I can't search for any channels....

Matthias Strack

First Step is 'Add DVB Network by Location..', then TVH scans for Multiplexes (afaik).
If its done the Button 'Map DVB Services to channels...' should be active.
You can check what TVH is doing via the Status Page.

MS Schw

'Add DVB Network by Location..',

OK I'm a step further.

One problem occured.

I've got an Reciever that uses SCR0 (freq 1210) and SCR1 (freq 1420).
tvheadend should use SCR2 (freq XBMC 1680) and SCR3 (freq 2040).

For some reason I only can use SCR2.

I deleted the config and tried all over. But the problem is still there.

I added a few screenshots again. Or do you prefer console output?

If it helps, i can give you a ssh access. ...

Stefan Seyfried

"switchport" can only be 0 or 1, and unless you have a two position unicable matrix, you need to set it to 0.

This needs to be fixed in the Webfrontend, that entries with switchport > 1 are not possible if a unicable port is selected. Unfortunately, my web-foo is almost zero :-)

for now, just set switchport to "0" and it might work much better :-)

If you are using two DVB cards, you should set one of them to use SCR2 and the other to use SCR3 to make sure both are not using the same channel accidentally? But then I'm not really sure about the inner workings of tvheadend, this is all pretty new to me.

ssh access is not (yet) necessary, I think we'll sort it out :-)

MS Schw

I set the switchport to "0" on both DVB cards.

(I have a digital devices card which has two tuners on board)

DVB-1 has SCR2 -> finds channels
DVB-0 has SCR3 -> doesn't do anything, multiplex starts with quality = 100% but then ends up with: "frontend status says: Frontend status "no signal""

Stefan Seyfried

Ok, that's interesting. I'm looking at the code trying to explain it but I can't see how this happens.

Could you try to switch the SCR assignment between DVB-0 and DVB-1 and test if this might be frontend related?

How did you connect the tuners to your cable?

Cable -> splitter -> tuner1/tuner2

cable -> tuner1 -> loopthrough to tuner2

(in case your board has loopthrough ports.

I'd guess the second would not work well.

Could you ever test both tuners on a non-unicable setup to ensure both do send DiSEqC commands correctly?

MS Schw

Ok, my tuners are connected:

Cable -> splitter -> Tuner 1 / Tuner 2

I swaped SCR2 and SCR3. Only SCR2 works.

I had the card working in a Windows Mediacenter (Win7) with both tuners.