[mythtv-users] Can't start mythfrontend with TV off since moving to Intel graphics

Ram Ramesh rramesh2400 at gmail.com
Tue Oct 27 22:04:17 UTC 2020


On 10/27/20 4:53 PM, Mark Kendall wrote:
> Paul
>
> OK - I see what is happening (the root cause is that the display is
> not connected)
>
> Firstly, Qt isn't sure what display it is connected to which leads to
> this line in the logs (I'd have to check but presumably Qt ignores
> displays that are reported as disconnected):-
>
> mythdisplay.cpp:376 (GetDesiredScreen) - Display: Screen 'HDMI1' not
> found, defaulting to primary screen (:0.0)
>
> The mythtv code then tries to match :0.0 to a known display, and fails
> with this line:-
>
> platforms/mythdisplayx11.cpp:125 (GetVideoModes) - DisplayX11: Failed
> to find an output that matches ':0.0' .........
Paul,

   I have a intel NUC and I am able to start mythfrontend without TV on. 
My NUC goes through Marantz receiver and I suspect you also have it in a 
similar way.

  However, I do have another issue that I cannot start it from rexec 
which runs without a tty. It simply hangs and does nothing.
So, I usually vnc to the machine with monitor/TV off and simply start it 
on the X screen. I do not have issues starting this way.

I also have very similar situation with another frontend box that has 
core i3-2100. My issue has been X starts in 4K each time I turn on the 
TV and I had to xrandr to 1920x1080.120Hz.

Regards
Ramesh



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