As I mentioned above, I mis-titled this thread. The video mode isn't changing. The option for "separate playback and menu modes" is *not* selected. I verified this at one point, playing some low resolution videos and confirming in the TV that the output was 1080p/60.
I sure hope it's something in Myth. It was starting to feel like a hardware problem. I have two other frontends both with Intel video and they work great.
The modelines were extracted from the X autoprobe output. On my other frontends, X will add the manual lines to this list of autoprobed modelines in Xorg.0.log. Somehow here my created "-1", "-2" identifiers are not showing up so I can't select them in my screen section.
I calculated the refresh rates for each of your listed 7 modes:
60 p
25 i
30 i
50 p
24 p // should be 23.976 additional
25 p ?
30 p ?
All above numbers are exact integer values (to 3dp).
Can't comment on the validity of the sync polarities.
They appear to be mix of std computer modes but not exact video modelines.. did they come out of a TV EDID ?
Maybe some are rejected because they are parsed and seen as repeats & plain wrong &/or outside acceptable V & H sync bands.
Can't see any use for 25p & 30p.. 24p (23.976) is bad enough.
Should never need to output interlaced video, make video card do it. If it can't then replace with something fit for purpose.
And should always use reduced vertical blanking timing if possible.
So replace all of them with the output from this:
cvt -r 1920 1080 60 // 1920x1080 59.93 Hz right TV/video mode.
&
cvt 1920 1080 50 // 50p no RVB
cvt -i 1920 1080 30 // if you really must have interlaced. not exact refresh rate (modify -r 60 modeline?).
Sadly, the FOSS modeline calculators do not understand the reduced blanking timing & exact video timings for 24 & 50Hz or any interlaced mode.
But all modern displays work with reduced blanking timing.
I added this to my monitor section and commented out the others. However after rebooting I do not see "1920x1080R" anywhere in Xorg.0.log. Any thoughts on why?
I wasn't expecting to use an interlaced mode. I just wanted to try everything and see if it would fix the problem.
I would guess that the whole file is being ignored due to syntax erorr or missing semantics.
The log file should indicate that your xorg.conf is be opened.
The documentation on xorg.conf is very dated except for Nvidia & that most likely does not apply.
I use custom modelines but on Nvidia hardware.
Attached an example of Nvidia xorg.conf file (/etc/X11/xorg.conf.d/20-nvidia.conf)
No it's being read. My monitor identifier "Samsung50" as well as the specified Intel driver settings are present in Xorg.0.log. Just not the custom mode lines.
Yes I played with xrandr. When the screen went blank, I found I could bring it "alive" again by switching to another resolution. Sadly, switching back to 1080p/60 *still* didn't work.