[nuc5]

Hello dear community,

I ve got a problem I can't solve and I am just about to give up. My DVB-C Sticks don't work properly.

My hardware:
* Intel NUC5PPYH
* DVB-C Stick - TechnoTrend CT2-4400
* DVB-C Stick - Tripple Stick 292e
* SSD HDD
* Image: OpenELEC-Generic.x86_64-6.0-devel-XXXXXX

It doesn't matter which image I use, it's the same problem.

First of all:
I don't want to use both sticks at the same time but just one. First I installed the TechnoTrend CT2-4400 Tuner. Assuming it was defect I bought the TrippleStick 292e. However, both don't seem to work. I never used both sticks simultaneously.

As backend I tried two different methods:

1) tvheadend + Tvheadend HTSP Client
Under tvheadend webif, tvheadend recognises the tuner after each reboot. DVB-C is alway activated. DVB-T is deactivated cause I don't need that. IF it finds a signal (which can be seen in status → broadband) he finds the channels. However, IF I reboot or shut down the PC, tvheadend will start but the tuner can'T find any signal (again which can be seen in status → broadband).
IF I deactivate and activate tvheadend addon 3-4x only then I will find a signal and everything works until I reboot or shutdown the system.
I already created a new user account. In the configs in tvheadend. I activated in the menu from tvheadend that tvheadend is supposed to wait until a device has been found.

2) VDR + VNSI Client
The same problem. If the tuner is found I can find and watch channels. After reboot, TVLive entry disappears in the menu and under configs → TV I cannot search for any channels let alone open VDR menu UNTIL the tuner is found sometime later.

I have no damn clue what to do now. Does anyone here have the same problems or any experience in that?

Regards,

[FernetMenta]

You should wait with starting vdr until the OS has detected the DVB stick. I don't use OpenElec myself, hence I don't know how it handles startup sequences. On my systems I use system d to observe this path /dev/dvb/adapter0/frontend0. If this path exists, system d starts vdr.

[nuc5]

I bought a THIRD tuner, the DVBSky T680C. This one needs an external power supply (12v). Finally, with this one I get a broadband signal after each Switch on/off. Strangely enough this model also uses the same chipset (Slilicon Labs Si2168 FW) as the previously two models I bought.

So, I presumed that the two previous tuners needed more power. So I used an external USB Hub with external power supply. Result: With the TrippleTuner 292e, I got a signal after every second reboot/power switch. No kidding, after each second try! The second tuner (TechnoTrend CT2-4400 Tuner) showed similar results but still a bit worse. I rarely got a signal, but better than none.
The question is, why the heck do I get a signal after every second try? That is unexplainable to me. My USB Hub has 8 ampere, that is more than enough power. You might think why don't I use the third tuner? Well it costs the double.

Thanks in advance,

[FernetMenta]

I don't know. You need to ask a kernel developer.