[mythtv-users] Hauppauge 2255 dual tuner?

Matt Zagrabelny mzagrabe at d.umn.edu
Wed Sep 25 18:25:26 UTC 2019


On Wed, Sep 25, 2019 at 9:53 AM Stephen Worthington <
stephen_agent at jsw.gen.nz> wrote:

>
>
>
> If it is a dual tuner, then normally you should see two separate tuner
> devices.  Take a look at the kernel output for the HVR-2250 here:
>
> https://linuxtv.org/wiki/index.php/Hauppauge_WinTV-HVR-2250
>
> The crucial bits are these, where the two new adapters are registered:
>
> [   20.699512] DVB: registering new adapter (saa7164)
> [   20.699542] DVB: registering adapter 0 frontend 0 (Samsung S5H1411
> QAM/8VSB Frontend)...
>
> [   23.399813] DVB: registering new adapter (saa7164)
> [   23.399838] DVB: registering adapter 1 frontend 0 (Samsung S5H1411
> QAM/8VSB Frontend)...
>


Ahhh....

[   25.203938] DVB: registering new adapter (saa7164)
[   25.203942] saa7164 0000:02:00.0: DVB: registering adapter 0 frontend 0
(LG Electronics LGDT3306A VSB/QAM Frontend)...
[   25.239634] si2157 10-0060: Silicon Labs Si2147/2148/2157/2158
successfully attached
[   25.240036] DVB: registering new adapter (saa7164)
[   25.240040] saa7164 0000:02:00.0: DVB: registering adapter 1 frontend 0
(LG Electronics LGDT3306A VSB/QAM Frontend)...
[   25.240481] saa7164[0]: registered device video0 [mpeg]
[   25.471227] saa7164[0]: registered device video1 [mpeg]
[   25.683478] saa7164[0]: registered device vbi0 [vbi]
[   25.683506] saa7164[0]: registered device vbi1 [vbi]



>
> So for the HVR-2250, I would expect to see two adapters under the
> /dev/dvb directory, like these for my DVB-T adapters:
>
> root at mypvr:~# ll /dev/dvb
> total 0
> drwxr-xr-x 18 root root  360 Sep 24 17:35 ./
> drwxr-xr-x 22 root root 5700 Sep 24 17:36 ../
> drwxr-xr-x  2 root root  120 Sep 24 17:35 adapter0/
> drwxr-xr-x  2 root root  120 Sep 24 17:35 adapter1/
>
> Does the HVR-2255 do the same?


Yes:

$ ls -alh /dev/dvb
total 0
drwxr-xr-x  4 root root   80 Sep 23 17:44 .
drwxr-xr-x 21 root root 3.7K Sep 25 08:22 ..
drwxr-xr-x  2 root root  120 Sep 23 17:44 adapter0
drwxr-xr-x  2 root root  120 Sep 23 17:44 adapter1



> If so, they in MythTV you can just set
> up each of those devices as separate tuners and they should just work.
>
> And as well, multirec should work, so you should be able to record
> from all the channels on one frequency at once, using just one of the
> two devices.  You need one tuner per frequency, not one tuner per
> channel.
>

Okay.

Thanks!

-m
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