RPi4B 2G Matrix Nightly Testbuild dropped frames.

I have been updating with the Nightly Test builds (currently LibreELEC-RPi4.arm-9.80-nightly-20210205-3420901) and notice gradual improvements, such as fixed screen wrapping. I appreciate the effort devs are putting in the get the Pi4 working properly.

So that being said, there is one issue that has been present since 4K was enabled several weeks ago. When the resolution is set to the default 4K 3840 x 1920 @30Hz screen blanking occurs. I thought this was on 4K videos only but the screen blanks occasionally on any resolution video playing and also while playing music files ie MP3s. I am using an effects plugin while playing music. When I set the resolution back to 1920x1080P @60Hz no blanking occurs. I'm OK staying with 1080p but it would be nice to have 4K working.

No interlaced profiles are used. Not sure how to disable interlacing if none are used. No option to do so found at /settings/system/display/

I accidentally found the menu you were referring to. Selecting the "gear" settings icon showed Interlacing was disabled. I set this as default with 4K resolution 30Hz. It locked up on resume so did a power off. I somehow found the control panel again and saved successfully. I'll report back when I have opportunity to do some testing.

I set to Interleave off, set the 4K resolution at 30Hz. Played a blueray converted to 4K x265 6 channel audio. Result...blank screen every 30s or so.

I'll keep an eye on the thread .

Quote from Da Flex

The gear wheel menu has a bug at current LE nightly, so it freezes after a few seconds on my RPi3B+. I made a team internal bug report. I think we have to wait.

OK all done there. Interlacing is off. Redefining the problem: When display is set to 1920x1080P @60HZ all works well. When 4K profile is set I get 1-2 seconds of black or blank screen every 30-40s regardless of the media being viewed.

I need to check the video time counter to see if it is blanking or stopping. I might need to take a video of the timer to determine that. I've looked through the logs and cant see anything that would indicate a problem. I'm no expert in this area. I'd need direction which log to look at. In the mean time I'll switch back to 1080P.

Playback on 4K 30Hz profile is much improved using LibreELEC-RPi4.arm-9.80-nightly-20210208-df1905c. I have not been able to replicate screen blanking except when exiting a video to the console. Great work Devs. Much appreciated.

Ah yes, but will it run on an RPi4 with LibreElec 9.8 which uses Python 3. The Original Argon One script loaded a Python 2 module which still allows the on off button to work but no fan.

Seems it will check what version you are using.

I'll remove what I have and try . cheers