Heavy image interferences on tinkerboard s

Nerd · March 12, 2020 at 6:49 PM

Hi guys,

I am using a Thinkerboard S and having issues with it. Everything worked fine up to version TinkerBoard.arm-9.1.501-rk3288 and all following versions even 9.2.1 are causing issues that I am not able to solve. I tried movies on my hard drive as well as videos on YouTube (Kodi YouTube plugin) and unfortunately, I am seeing in both cases just image interferences while I am watching Videos. Big pixelated blocks / clouds everywhere, not sure how to explain that properly. At least not watchable at all.

I just did a fresh installation and tested it again with 9.2.1 and unfortunately I am having the same issues.

I attached the log file, hope it is the right one.

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Thank you in advance.

**Da Flex** · March 12, 2020 at 11:43 PM Official Post

Do you remember the screen mode (resolution, refresh rate) of the last working LE version?

Maybe the current LE doesn't detect the right screen mode for your device:

Quote from kodi.log

...

2020-03-12 18:34:23.659 T:2994022240 NOTICE: Whitelist search for: width: 1904, height: 1072, fps: 23.976, 3D: false

2020-03-12 18:34:23.659 T:2994022240 DEBUG: Trying to find exact refresh rate

2020-03-12 18:34:23.661 T:2994022240 DEBUG: No exact whitelisted resolution matched, trying double refresh rate

2020-03-12 18:34:23.662 T:2994022240 DEBUG: No double whitelisted resolution matched, trying 3:2 pullback

2020-03-12 18:34:23.663 T:2994022240 DEBUG: No 3:2 pullback refresh rate whitelisted resolution matched, trying current resolution

2020-03-12 18:34:23.663 T:2994022240 DEBUG: Matched current Resolution 1920x1080 @ 23.976025 Hz (42)

2020-03-12 18:34:23.663 T:2994022240 NOTICE: Display resolution ADJUST : 1920x1080 @ 23.976025 Hz (42)

...

Display More

I think LE is searching for a wrong screen mode (1904x1072) and ends up using a too high resolution (1920x1080).

Select a lower resolution (1280×720) and try again.

Nerd · March 13, 2020 at 6:43 AM

Thank you very much for your response Da Flex.

I do not remember the screen mode but I can check or even create another log with the working 9.1.501 version in the evening. I have the 501 on the mmc and tested now on an SD card. The other day I just updated 9.2.1 over 9.1.501 on the mmc and had the image interferences again. So I returned back since 9.1.501 seems for me the only working version.

I will try a lower resolution in the evening and will report back.

Thanks again

Nerd · March 13, 2020 at 8:00 PM

Hi,

I checked your suggestion and used the lower resolution. Unfortunately it still looks the same heavy artefacts within the movie.

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The same movie on TinkerBoard.arm-9.1.501-rk3288 looks like that:

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**Da Flex** · March 13, 2020 at 9:58 PM Official Post

The working LE version is detecting the resolution the same way, so my theory is wrong.

Because I don't have this hardware, I suggest a bug report. Attach both logs, that's a good database to find the bug.

Nerd · March 14, 2020 at 7:22 AM

Thank you very much, I will post a bug report.

EDIT:

Bug Report

johantonissen · April 7, 2020 at 10:01 AM

Hi there, im experiencing the same issues on a tinker board S. Did you manage to fix your problem already ?

Nerd · April 7, 2020 at 11:52 AM

Hi.
No, sorry. Nothing to report so far. I am still with that old 9.1.501 version because it just works.

**chewitt** · April 13, 2020 at 12:19 PM Official Post

ping Kwiboo

Nerd · April 19, 2020 at 10:45 AM

Hi,

I just tested

LibreELEC-TinkerBoard.arm-9.2-devel-20200418151009-f8b66fc-rk3288

LibreELEC-TinkerBoard.arm-9.2-nightly-20200418-f8c86fe-rk3288

unfortunately they have as well these huge artefacts all over the place.

Nerd · May 21, 2020 at 10:55 AM

Hi,

I had no luck with the current nightly from the 20.5.

Just two screenshots to visually show my issue:

Gianfranco · November 10, 2020 at 9:13 PM

I have the same problem with build 9.2.6 and previous.
Initially I updated from kodi 18.3 to 18.4 (don't remember the build number) and the flickering thing appeared, so I just rolled back and disabled the automatic updates. Today I wanted to give the 9.2.6 a try, but the same behaviour was identified. I tried to have a look at other forums regarding Libreelec flickering, and the one on the Raspberry pi 4 came out, which highlighted the fact that the problem has roots in the audio setting (although I have no competences to investigate that), video hardware acceleration and video white-listed resolutions (it doesn't accept float refresh rates). I tried to remove those white-listed resolution but there were still flickering, while with the video hardware acceleration disabled it seems to have resolved the problem.
If someone tells me what logs you need and how to capture them maybe we can get to a solution.
(I do have the first tinker board, not the "S" one)