Xbox One DVB-T/T2/C tuner

noggin · 2014-10-21T15:38:04+00:00

Hi all This looks like it could be very good value if Open Source drivers appear for it : http://www.xbox.com/en-GB/xbox-one/accessories/digital-tv-tuner#fb...

Anthony Thomas

Ryan Blackburn wrote:

> I've scanned a known frequency, that i've got coming through on my stb, is that not enough?

That should be enough.

Are all the parameters correct?

Particularly the symbol rate.

Ryan Blackburn

Yes they seem fine..it's really strange. Almost like the usb tuner is defaulting to DVB-T all the time rather than switching to dvb-c when asked. I tested dvb-t and that scans just fine.

Ryan Blackburn

Ryan Blackburn wrote:

> Yes they seem fine..it's really strange. Almost like the usb tuner is defaulting to DVB-T all the time rather than switching to dvb-c when asked. I tested dvb-t and that scans just fine.

Think i know what it is as virgin scans fine under dvbv5 in terminal. There isn't an option in my tvheadend to select dvb-c annex a? Any ideas..

Michael C.

Hi guys,
I'm watching this thread and similar one on libreelec forum for some time. Thanks for all tips. Couple months ago i was asking about continuity problems and errors in DVB-C. I found no solution... till yesterday. I changed muxes frequencies by adding 500kHz. So my tuner found 10 muxes and one of them was 122MHz so i changed it to 122,5MHz and now i got no problems in receiving.
So maybe it will help some of you.

Ryan Blackburn

Michael C. wrote:
> Hi guys,
> I'm watching this thread and similar one on libreelec forum for some time. Thanks for all tips. Couple months ago i was asking about continuity problems and errors in DVB-C. I found no solution... till yesterday. I changed muxes frequencies by adding 500kHz. So my tuner found 10 muxes and one of them was 122MHz so i changed it to 122,5MHz and now i got no problems in receiving.

> So maybe it will help some of you.

Michael,

What settings do you use in tvheadend? Any chance of sending me some screenshots..

Michael C.

I can upload some screenshots in 2 hours when i will be back at home.

Ryan Blackburn

Michael C. wrote:

> I can upload some screenshots in 2 hours when i will be back at home.

Hi dude, sorry to be a pain but did you have any joy with the screenshots.

Cheers

Michael C.

Hi,
sorry for so late response- hard weekend :)
Like you see i have plenty of muxes which were found by the tuner. I'm using only 4 of them and i added 500kHz(122.5MHz) or 700kHz(210.7MHz) to the relevant muxes. Rest of the muxes are encrypted, so i don't need them.
This config works for me.
Cheers

Marko Korhonen

Hello all! Now that Linux 4.15 has been out for a while, can anybody tell me if this driver is included in the mainline kernel? The LinuxTV wiki says "A patch has been submitted to add support to mainline kernels. Possible inclusion earliest in kernel 4.15"

CvH

> can anybody tell me if this driver is included in the mainline kernel?

https://github.com/torvalds/linux/commit/c4d84547d5ae4fafe2dde649deaf10047ef34d00

adds it to the kernel, starting with v4.16-rc1 -> so 4.16 is the first kernel that includes it

Anthony Shephard

Hi,

Has anyone managed to get an Rpi2 with kernel v4.14.y working with the Xbox Tuner? I'm trying to fix the reception issues. I updated the kernel using rpi-update, which worked fine, but obviously removed the driver support. So I tried to rebuild following the cut down build process, this worked once I'd download the kernel headers using rpi-source. But when I rebooted I had issues with the driver;

[    6.783119] dvb_usb: disagrees about version of symbol rc_register_device
[    6.783149] dvb_usb: Unknown symbol rc_register_device (err -22)
[    6.783220] dvb_usb: disagrees about version of symbol rc_free_device
[    6.783241] dvb_usb: Unknown symbol rc_free_device (err -22)
[    6.783295] dvb_usb: disagrees about version of symbol rc_allocate_device
[    6.783305] dvb_usb: Unknown symbol rc_allocate_device (err -22)
[    6.784012] dvb_usb: disagrees about version of symbol rc_unregister_device
[    6.784030] dvb_usb: Unknown symbol rc_unregister_device (err -22)

After cleaning and rebuilding a few times, I gave up, reverted back to kernel v4.9.35-v7+ and rebuilt the drivers again. There was an issue with the repo yesterday, but that got fixed so I'm back up and running. Before I try again, has anyone else got it working?

Anthony

Benjamin Challinor

Yes - to get it to build i needed to make one alteration otherwise I got the symbol issue with remote controller support.

Try make menuconfig, then change ‘Remote Controller Support’ from <M> to <*>. By default it builds remote controller support as modules and that always leads to the error above. Switching to built in to the kernel sorts that issue out.

However I find limited success in using this at present as in the UK 2 particular DVB-T2 muxes fail to tune properly - seeming to take 5-10 seconds to stabilise using this device, but works fine with others muxes. Both muxes are fine with other tuners, so looks like there are some issues remaining.

Anthony Shephard

Thanks for the response, I might give it another go then with the changes you suggest ...

Anthony

Anthony Shephard

Thanks!

It works. Hopefully no more transport errors, if it tunes.

Anthony

Marko Korhonen

C vH wrote:
> > can anybody tell me if this driver is included in the mainline kernel?
>
> https://github.com/torvalds/linux/commit/c4d84547d5ae4fafe2dde649deaf10047ef34d00 >

> adds it to the kernel, starting with v4.16-rc1 -> so 4.16 is the first kernel that includes it

Ahh thanks for the clarification!

CvH

I updated the wiki too, just in case ;)

Anthony Shephard

Benjamin Challinor wrote:
> Yes - to get it to build i needed to make one alteration otherwise I got the symbol issue with remote controller support.
>
> Try make menuconfig, then change ‘Remote Controller Support’ from <M> to <*>. By default it builds remote controller support as modules and that always leads to the error above. Switching to built in to the kernel sorts that issue out.
>

> However I find limited success in using this at present as in the UK 2 particular DVB-T2 muxes fail to tune properly - seeming to take 5-10 seconds to stabilise using this device, but works fine with others muxes. Both muxes are fine with other tuners, so looks like there are some issues remaining.

Hi. I have the same problem. The HD muxes (DVB-T2) take longer to stabilise than Tvheadend expects, so a stream seems to fail. A recording is okay though.

I thought there might be a setting within tvheadend to wait but it seems not :-(

Anthony

Benjamin Challinor

Oddly, only 2 DVB-T2 muxes are a problem - the lower frequency ones. Another 3rd DVB-T2 mux works perfectly every time. No tvheadend setting changes this, so seems to be a driver issue most likely

Phil Hawker

If you're in the UK then this may be due to the work for "700MHz clearance" - the temporary COM-A & COM-B T2/HD muxes typically have lower ERP than the old muxes and may well be on frequencies in a different aerial group to those they replaced, so if you have a grouped aerial, maybe near the coverage margins or behind obstructions then the signal strength for those muxes may be far lower, and I'm not sure how well the Xbox One tuner copes with marginal signals. Have you compared signal strength / quality for those muxes with the others using a TV or something else with a diagnostic readout?
Take a look at the Coverage Checker (detailed view) at http://www.digitaluk.co.uk/ for more information.
Lots of very good information on aerial basics at http://www.aerialsandtv.com/atvschoiceofaerials.html

Benjamin Challinor

Yes, it’s COM 7&8 which are problematic, which are quarter power compared to the working DVB-T2 mux, so it could be related. However, on the few occasions when the tuner eventually works, its rock solid. Further, mygica t230 tuners also in use work perfectly on all muxes and both tuners agree on the signal strength on all muxes.

So difficult to say what’s going on at present. We switch over to clear 700mhz in a few days, so should be on full power on all muxes then which should rule that out or not

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