[mythtv-users] mythtv issues at 4K (Intel NUC 12th Gen)

Gabriel Kuri gkuri at ieee.org
Fri Nov 18 22:03:38 UTC 2022


So that's what I suspected, but the box has 16GB of RAM and runs nothing
else but the myth frontend.

There's nothing else logged in the Xorg.0.log to indicate any issues.

I'm stumped, as I can't seem to turn up enough logging on either X or
mythfrontend to generate a useful error to figure out why the frontend
won't load.

Is it possible it could be running short on video memory? I think the BIOS
setting in the NUC has it set to "MIN 64 MB", and the only other option is
"MIN 128MB".



On Fri, Nov 18, 2022 at 12:37 PM Dan Wilga <mythtv-users at dwilga.info> wrote:

> On 11/17/22 2:19 PM, Gabriel Kuri via mythtv-users wrote:
> > I have an Intel NUC 12th Gen that I loaded a mythfrontend on
> > (31/fixes). When X is running at 4K resolution (3840x2160),
> > mythfrontend won't load. Running it in the foreground generates the
> > following output. The X server didn't die, it's still there and
> > running fine...
> >
> > 2022-11-17 11:11:17.555931 I  OpenGL: Initialised MythRenderOpenGL
> > 2022-11-17 11:11:17.555932 I  OpenGL: Using full range output
> > 2022-11-17 11:11:17.556364 I  UICache: Pruning cache directory:
> > /home/mythtv/.mythtv/cache/remotecache
> > 2022-11-17 11:11:17.556374 I  UICache: Kept 0 files, deleted 0 files,
> > stat error on 0 files
> > 2022-11-17 11:11:17.556375 I  UICache: Pruning cache directory:
> > /home/mythtv/.mythtv/cache/thumbnails
> > 2022-11-17 11:11:17.556377 I  UICache: Kept 0 files, deleted 0 files,
> > stat error on 0 files
> > 2022-11-17 11:11:17.580900 I  CECAdapter: libCEC support is disabled.
> > .752015 I  Qt: The X11 connection broke (error 4). Did the X11 server
> die?
> > .753197 I  UDPListener: Disabling
> >
> > If I force mythfrontend to a lower geometry (ie 1080p), it comes up
> > fine. I can even go up to geometry 2000x1800, it loads. But as I
> > increase either the X or Y on the geometry, it will eventually get to
> > the point where it won't load and log the error "Qt: The X11
> > connection broke (error 4). Did the X11 server die?".
> >
> > I realize the GPU on this Nuc 12th gen is pretty new, I think it's an
> > Iris Xe ? I do have linux kernel 6.0.8 running to provide the latest
> > i915 driver and I also updated the intel-media-va-driver to 22.2.1.
> >
> > I also tried myth 32/fixes with the same result.
> >
> > I ran mplayer with a 4K test file and it plays.
> >
> > I'm not sure how to further debug the issue at this point. Anyone
> > running a newer Intel NUC 12th gen with the newer Alder Lake GPU ? Any
> > thoughts on what's going on?
>
> I would look in the X server logs. The location depends on your distro,
> but one common location is /var/log/Xorg.0.log. (Substitute the correct
> X display ID for "0".)
>
> My guess is that you could be running out of memory due to the much
> higher amount required for that resolution.
>
>
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