RK3328 4K HEVC stutter frame drop

Hi FurmanSK your observations are correct, in many cases the operations are accelerated via hardware (gpu, decoding) so before the bottleneck was the ram which at low speeds kept the cpu busy which had the task of waiting and synchronizing the texture movements and video streams. the ram now runs at 800mhz and the bottleneck has moved (even if with estuary I reach 30fps)
the resolution problem is known, from the little I've seen there is a regression in kernel 6.6 which has impacts almost everywhere. I'm trying to understand more

Hi, actually in the librecomputer source repositories I saw that I can try to increase the clock a little more.I'll do some tests.
Regarding the resolution problem with my monitor, everything works correctly with libreelec 9.2 (which has the vendor kernel). With all other subsequent versions it doesn't switch me to 720p (I don't have a 4k device). When you can, can you also do some tests with libreelec 9.2? Just to better understand if it supports all resolutions and therefore be on the safe side by trying to understand the differences between vendor and mainline (the drivers have been rewritten but the starting point is the kernel vendor)

Hi, I've tried to put something on my Renegade (2GB version) and... the official version isn't good enough: as soon as an overlay appears (like: subtitles or the OSD) the whole system goes down in flames to a single digit rendering time (and has various "problems" and has green horizontal rows on load).

The old beta here (2024/04/23) on the other hand is perfectly fine... it crashes fairly often (well, that's a given, it's a beta!), but when it's not crashing is playing nicely.

It's just me ? (maybe my hardware is dying ?)

I'm still trying to figure out how to have a working LibreELEC.

So, I've tried both the official 11 and 12 on my Renegade, this is how the loading image appears on my screen:

Once the image booted up everything is fine but...

The aforementioned beta -> occasionally crashes
LibreElec 11.0.6 -> works fine (not tried much, seems stable), green loading
LibreElec 12 -> no crashes, slow as hell when overlay occours, green loading

SixSixTwo what resolution? I imagine 4k. however there are known problems with the 3328 and unfortunately you have to be patient for the fixes. In the meantime, try with a lower resolution and/or try with another HDMI cable.

4K with HLG and so on (almost all TV sets nowadays are like that).

I know I have to be patient, I just wanted to highlight that there is a problem, a problem that was introduced later.

The (unstable, at least for me) 2024/04/23 beta had no such problem.

I've tried the latest beta and it still has green bars on loading and visible blockiness / artifacts during playback.
It's a bit baffling that an older beta was working good (well, crashes aside) while not one but two releases are crippled and the current beta is just as broken.

For the rest : tried with two HDMI cables and two microSD cards. Changing resolution doesn't seem to fix anything.

Quote from SixSixTwo

It's a bit baffling that an older beta was working good (well, crashes aside) while not one but two releases are crippled and the current beta is just as broken.

It's a little disconcerting until you go in and see how much code has changed.

As for the slowness with 4K, the subject of this thread which I imagine you haven't read to the end, it has been written that it also depends (but not only) on the DDR4 clock. the fix in question is being tested and will be released as soon as possible.

in the meantime, you can try this old test build and see if it improves anything

roc-3328-cc