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Hi Craig!<br>
<br>
Will preface all my answers with "I am an amateur" and the others
are much smarter than I am. <br>
<br>
<blockquote type="cite">
<blockquote type="cite" style="color: #993399;">
<pre wrap="">I have an FE running Ubuntu 14.04 and MythBuntu that was connected to a
CRT TV using composite video from the built-in Nvidia 1650 display
controller, but the CRT finally died. (Yay?)
I replaced the TV with a new, modern LED 4K HDR display (yeah, one extreme
to another), but I'm having problems.</pre>
</blockquote>
</blockquote>
<br>
You do like I tend to do: upgrade once, attempting to go for the
best and planning ahead for the future.<br>
<br>
<blockquote type="cite">
<blockquote type="cite" style="color: #993399;">
<pre wrap=""> - First: The FE is now connected via a DVI to HDMI adapter to HDMI on
the new TV.
- The BIOS splash screen and the Ubuntu 14.04 boot screens display
successfully on boot up.
- Then I get a blinking cursor in the top left corner of the
display,
- Eventually the TV puts up a display about the signal resolution
is incompatible and I need to change it before the TV will display the FE's
output.
- If I swap the TV for an LED Computer monitor (27" Acer) with the
input still via HDMI, I get a successful display of the MythTV main menu
page at the end of the boot up process with a resolution of maybe 1920 x
1080.
- I opened the Nvidia settings application and tried saving that
configuration (I think it got written to /etc/X11/xorg.conf) and re-trying
to display on the TV, but no joy.
- Any advice on how to get this working would be greatly
appreciated.</pre>
</blockquote>
</blockquote>
<br>
Good news: the FE signal is getting through all the adapters to your
4K TV. The bad news is your FE eventually puts out a resolution the
TV does not like. Try setting your FE's Desktop to a lower
resolution (try 1280 x 720). The monitor can adjust to a variety of
input resolutions, TVs tend to be a lot more restrictive in what
they 'understand'.<br>
<br>
The nVidia configuration might not be getting saved. (Test while on
your monitor.) <br>
<br>
<br>
<br>
<blockquote type="cite">
<blockquote type="cite" style="color: #993399;">
<pre wrap=""> - Second: Since I'm already here, hat in hand, I might as well
anticipate the next problem.
- If I understood the data about the DVI to HDMI adapter cable
correctly, it won't supply audio to the TV, but there's no separate Audio
In connection to the TV, only Audio Out.</pre>
</blockquote>
</blockquote>
<br>
I've read DVI-D does supply audio but it depends on the video card.
And since you are using a DVI to HDMI adapter the adapter
manufacturer may have cheated and not included the connections.<br>
<br>
There are 'audio extractor' adapters which will take the audio data
in the HDMI and extract to phono connectors and/or TOSLINK. Don't
know if a DVI version exists. Might be less of a headache to
configure your Frontend to use the Audio Out connector on the rear
panel and input that signal to a remote speaker pair or sound bar.
(Could do wirelessly with a Bluetooth adapter plugged in the back of
the FE.)<br>
<br>
<blockquote type="cite">
<blockquote type="cite" style="color: #993399;">
<pre wrap="">
- Is there a way to get the audio fed into the HDMI cable like
"normal" devices do -- maybe an audio / video Y-adapter for HDMI?
- Less likely alternative audio input paths include:
- A TOS link from the PC to the TV, but the one on the TV is
labeled "Out", not "In", and even if that would work, the question becomes
how to associate that audio with the correct video input?
- USB ports, but with a PC and a TV, who'd be the "master" and
who the "client"?
- Maybe I started with the wrong approach? This
<a class="moz-txt-link-rfc2396E" href="https://www.amazon.com/dp/B01FXDW2ZY/ref=sspa_dk_detail_2?psc=1"><https://www.amazon.com/dp/B01FXDW2ZY/ref=sspa_dk_detail_2?psc=1></a>
looks like it would be a solution, but I'm wondering if it will work
properly for use with MythTV video -- especially on my current Ubuntu 14.04
/ MythTV v0.27.6?
Update: The FE does <b class="moz-txt-star"><span class="moz-txt-tag">*</span>not<span class="moz-txt-tag">*</span></b> currently have USB 3.0, but it has spare <b class="moz-txt-star"><span class="moz-txt-tag">*</span>PCI<span class="moz-txt-tag">*</span></b>
slots (not PCI-e!). Maybe I could find a PCI to USB 3.0 adapter? Or
should I be looking for a different alternative? Seems that PCI video
adapters with HDMI are as rare as hen's teeth, and maybe more expensive
than their weight in gold.
</pre>
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<br>
You could use a DAC (Digital Audio Converter) -- the old one I have
sounds fine with USB 2.0. ID on the circuit board is XY-PCM2704 VER
1.0.<br>
<br>
And after all that I'm going to tell you what the others have
probably told you (as of this writing there were no other
responses): update your Frontend. The 'joke' is I'm part Scottish
(my father's side) and yes, I am a little frugal, so can appreciate
you trying to keep using the old hardware, but it's not going to be
worth it. Sad to say but it's time to update; hopefully the old
computer can be repurposed ==> server for backups?? (I sort of
wanted to give an explanation of why your proposal wasn't going to
work as opposed to saying "no, do it this way".)<br>
<br>
I think all of the FEs here at the house are refurbished units
purchased for around $100. "Obviously" get one with an HDMI output
-- DVI and DisplayPort are fine for video but need adapters for
audio into a TV, that's what started this problem! 2 GB of RAM
seems to be the 'sweet spot" for a dedicated FE; if you're going to
use the computer for e-mail, games, etc., buy accordingly.<br>
<br>
If you have a Raspberry Pi 3 B around there is a MythTV utility for
it -- works fine but here I need to be wired: the 2.4 GHz WiFi
connection is inconsistent (seems to be maxed out and/or
interference). LIS wired (100 Kbps) is fine.<br>
<br>
OK, good luck! <br>
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