[mythtv-users] Complication(s) with display upgrade - need help
huffcslists at gmail.com
Sun Mar 18 21:58:23 UTC 2018
On Sun, Mar 18, 2018 at 4:21 PM, Mark Perkins <perkins1724 at hotmail.com>
> On 19 March 2018 7:10:10 am Craig Huff <huffcslists at gmail.com> wrote:
>> 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.
>> - 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.
> Try adding nomodeset to the boot options. A quick google suggested
> something like this:
> quiet splash acpi=off nolapic nomodeset
> That should allow further debugging / investigation.
>> - Then I get a blinking cursor in the top left corner of the
>> - 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
>> - 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
>> - 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
>> - 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.
>> - 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
>> 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?
>> What model is the TV? It would be unlikely / unlucky to not have separate
> audio in?
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I got in to the grub dialog at boot and modified the command to include the
nomodeset option, but no joy. As a reminder, I can see the BIOS splash
screen and the Ubuntu boot screen (the one with the progress dots blinking
underneath the text "Ubuntu 14.04"), but once X starts, the screen goes
blank until the TV reports the resolution incompatibility.
While I'm waiting for more suggestions, I will probably drag the computer
monitor to the FE and try to see what happens if I connect it via VGA in
tandem with the TV. If dual monitor mode works and I can see things on at
least the computer monitor, maybe I can access the Nvidia settings
application on the computer monitor and change the settings for the TV to
something it likes?
There is no analog audio input. The TV is a Samsung UN65MU8000FXZA. It has
one Digital Optical Audio input and 3 USB 2.0 ports.
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