[VU+ Duo] Two DVB-T tuners not working

[acinfo64]

Dear all,

I bought a AVERMEDIA AVerTV HD Volar A867R DVB-T stick. Installed the driver. Then I could search and watch the DVB-T channels.

After that I bought a second one (exactly the same). Inserted that then something strange happens.

- The stick is recognized as the 4e tuner. That's what I expect (max of 4 tuners).
- I can change the settings of both sticks in the tuner setup.
- In manual search I can choose both stick and search.

That's ok but:

- With one stick I can see the channels. Inserting the second one and channels become black and none can be received. Removing the second one, the channels come back.
- In the automatic search only stick one is recognized the second not (although in manual search it's present)
- Searching with two sticks the VU+ will not find any channels on both sticks (and it takes very long).

Is there a solution for this?

 

[rte]

I understand that Vu+Duo has two internal DVB-S tuners inserted, A and B.
If two DVB-T-USB sticks are used as additional tuners, they will be C and D. But the receiver can manage only three tuners, one of these four must be deactivated. I have experienced this in practice.

 

[acinfo64]

Thank you very much for your answer. Just to get a clear picture.

1) I can remember that I saw somewhere that it supported 4 tuners. Can you confirm that it's definitely 3 tuners max for the DUO?

2) Is the 3 tuners something restricted by Enigma2, OpenVIX or by the hardware of the VU+ Duo? Because it's 2 USB tuners (not HW tuner inside) I cannot think of a HW restriction.

3) Am I mistaking with another VU+ which support 4 tuners? Is there a VU+ which supports 4 tuners?

4) With which VU+ can I get 2 DVB-T tuners?

With kind regards

 

[Rob van der Does]

The DUO is not limited to 3 tuners.
There has been a limitation like that (not sure if it was 3 though), but that has been fixed in the drivers ages ago.

 

[rte]

I have experienced the limitation of three tuners before but I have had no need to test that lately. Some might say it was ages ago. Glad to hear that the new drivers have fixed that.

 

[stick50jr]

As per my signature block, I've been using a vuduo for several years with two vtuners. In my case they are dual dvb-t tuners contained in a single usb device... the Avermedia Twinstar (A825) based on the AF9035 chipset. I also use cacheflush to regularly reclaim memory. Prior to using cacheflush, the Vuduo would become unstable after a little while... it has been suggested to me that the vtuner implementation (Vu+ firmware) has memory leaks and currently cacheflush is the only way to combat this.

 

[acinfo64]

Ok as far a I can see it should work with two vtuners. How can I figure out why it's not working? Is it a VU+ FW, enigma2, user, driver (and which driver)..... problem?

How often will you do a cacheflush and how? Is it seen while viewing?