<div dir="ltr">Hi Chris,<div><br></div><div>I have the same issue with my TBS 6281 using the open source drivers. Using dvd-fe-tool I can see that it advertises itself as having a DVB-T2 mode. As you point out there appears to be a hack in MythTV for DVB-S/S2. I also have a TSB 6982 which works fine for both S and S2 multiplexes. So it's certainly not just the driver for your tuner that has this issue.</div><div><br></div><div>Unfortunately I suspect the code may need to be changed elsewhere as well because I cannot chose the correct settings in mythtv-setup to tune into a dvb-t2 multiplex.</div><div><br></div><div>Regards,</div><div>Andrew</div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Nov 20, 2014 at 1:19 PM, Chris Simmons <span dir="ltr"><<a href="mailto:cps-mythtv-users@corefiling.co.uk" target="_blank">cps-mythtv-users@corefiling.co.uk</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">I recently emailed about DVB-T2 tuners and contrary to what I initially said I got a PCTV 292e tuner :) I am fickle...<br>
<br>
I'm using 3.17.2-200.fc20.x86_64 (fedora 20) and there's an in kernel driver which basically works.<br>
<br>
- It tunes in to DVB-T stuff fine including in mythtv<br>
- but DVB-T2 multiplexes don't work in mythtv<br>
- dvbv5-zap in Fedora 20 crashes but<br>
- I've compiled latest v4l-utils and with this dvbv5-zap works and I recorded some HD stuff off a DVB-T2 multiplex yay!<br>
<br>
So that's pretty good, it basically works but sadly mythtv doesn't work on the DVB-T2 multiplexes. I'm sure I've got the right multiplexes because I previously had them working on a PCTV 290e. I see similar behaviour in that tzap doesn't work with this device for the T2 multiplexes, I think because it isn't using the dvb v5 APIs.<br>
<br>
Has anyone got this working?<br>
<br>
Summarizing the blog and associated links starting here<br>
<br>
<a href="http://www.linuxtv.org/wiki/index.php/PCTV_Systems_tripleStick_T2_%28292e%29" target="_blank">http://www.linuxtv.org/wiki/<u></u>index.php/PCTV_Systems_<u></u>tripleStick_T2_%28292e%29</a><br>
<br>
I think what's happened is that the guy who wrote the driver didn't want to hack it so that it switched to DVB-T2 mode automatically. Whether this is a reasonable position to take I can't really say but that's how it is for better or for worse. I've been rooting around the mythtv code a bit and it seems that there isn't support for marking a tuner as DVB-T2 and/or using the DVB-T2 modulation system. It does, on the other hand, certainly special case DVB-S2 vs DVB-S. There's code like this in dtvmultiplex.cpp but nothing analogous for DVB-T vs DVB-T2:-<br>
<br>
// For #10153, guess at modulation system based on modulation<br>
if (DTVModulationSystem::<u></u>kModulationSystem_UNDEFINED == mod_sys)<br>
{<br>
mod_sys = (DTVModulation::<u></u>kModulationQPSK == modulation) ?<br>
DTVModulationSystem::<u></u>kModulationSystem_DVBS :<br>
DTVModulationSystem::<u></u>kModulationSystem_DVBS2;<br>
}<br>
<br>
<br>
I'm reading between the lines a bit but I think the solution might be to have a similar switches for DVB-T vs DVB-T2.<br>
<br>
I'd be happy enough if I could get it working only on DVB-T2 multiplexes only as I've got a dual DVB-T tuner.<br>
<br>
Am I on the right track here? Any hints?<br>
<br>
Cheers,<br>
<br>
Chris Simmons.<br>
<br>
PS If I do start hacking up mythbackend to get it working I'd rather do it on a test system. Would I have to put it on a different subnet? Is this best done in a VM?<br>
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</blockquote></div><br></div>