[mythtv-users] Using tv remote via hdmi to Liva X?

[Daniel Frey]

I just setup a flirc dongle and trained it to use my lg TV remote. Now one
remote and CEC isn't needed.

BTW, it is plugged into a Liva x2.

On Sun, Jan 24, 2016, 12:03 AM A. F. Cano <afc at shibaya.lonestar.org> wrote:

> Greetings everyone:
>
> Quick summary:
>
> TV and VGA monitor both connected to a Liva X, myth not quite behaving
> as expected, really cumbersome set up (every time).
>
> Remote control (of the tv) not working with HDMI-CEC.
>
> Details:
>
> I recently got a Samsung 6200 tv, that is connected to a Liva X via a
> quite thick and long (35 ft) HDMI cable.  It was quite expensive and
> rated for high speed/bandwidth/resolution.  Only later did I learn that
> some hdmi cables can't handle CEC which is apparently how the remote
> control signals get from the tv to the myth box.
>
> Can the Liva X handle CEC and thus receive the TV's remote control
> signals?
>
> The TV remote has no effect on myth, but I haven't configured anything
> manually yet.
>
> The liva X is running Debian Jessie and when I plug in the HDMI cable,
> the desktop adjusts automatically and I have a double-width dssktop
> with the TV to the right of the monitor with the VGA connection.
>
> Both the VGA display and the TV have 1920x1080 resolution.  Xdpyinfo
> shows screen #0 (the only screen) with 3840x1080 pixels.
>
> The only way I've found to display the frontend on the TV is to start
> another instance of the frontend on the extension of the desktop that
> displays on the tv:
>
> mythfrontend -geometry +1921+0
>
> There has to be a better way.  While the frontend that runs on the VGA
> screen displays properly, the one that displays on the TV exceeds the
> screen on all 4 sides.  The bottom half of the date and time (at the
> bottom of the screen) are cut off.  1/2 of the mythtv logo at the top
> is also cut off, and the same happens on the left and right sides.  In
> the days of CRT TVs this would be overscan, but what is happening when
> all displays are digital?  How can this be adjusted?  Why is it happening
> in the first place?
>
> In order to get the sound to be played through the TV I have to change
> the audio settings to "Digital Stereo (HDMI)" output and I have to give
> myth focus with a mouse click in order for the keyboard commands to even
> be seen.  And after all this, when I start playing a recorded video, it
> starts on the TV but immedeately (after 1 second) it gets displayed on
> the VGA screen.  After some more experimentation, I did manage to get
> the video to display on the TV.  I had to add the -w option:
>
> mythfrontend -w -geometry +1921+0
>
> Is this the expected behavior?  The window borders are not displayed and
> myth is still "overscanned"  There is a very thin band of the window
> border at the bottom of the screen when displaying video.  The screen
> size doesn't appear to be handled correctly when dealing with the TV.
>
> It would also be nice if the audio output could be set automatically.
> When using the VGA monitor, the audio goes to computer speakers from the
> audio jack, when using the TV, it should go through the HDMI cable.
>
> At least now myth is useable on the tv, but having to get up and
> go to the computer keyboard to control it is not really acceptable.
> Thus the second issue.
>
> I have found this:
>
> https://www.mythtv.org/wiki/HDMI-CEC
>
> but it seems to require additional devices, which brings me back to
> the question above: can the Liva X handle CEC? Does anyone know if
> there is something special about certain HDMI ports in Samsung TVs
> as opposed to others, like seems to be implied in some web pages I've
> read?  The second HDMI port on the TV is labeled HDMI/DVI.  What is
> the difference? Should I plug the myth box into this one?
> A lot of the content in the above page seems to be geared towards
> lirc, which I'd rather avoid if it's possible to just use the CEC
> signals through the HDMI cable.
>
> Is anyone using the remote of a samsung TV via HDMI-CEC to control
> myth on a liva without additional hardware?  If this is not possible,
> with what other devices can this be achieved?  I have found:
>
> https://www.pulse-eight.com/p/104/usb-hdmi-cec-adapter
>
> and see that there are IR to USB adapters, but I'd rather not use
> additional hardware if I can do this with the HDMI cable alone.
>
> Any hints or help will be gratefully received.  Thanks!
>
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