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Display issue on iMX6Solo LVDS0

Question asked by emil on Nov 7, 2014
Latest reply on Jan 15, 2015 by emil
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Hello,

I'm experiencing a strange display artifact that is sometimes present on the display. In maybe 1 in 10 cases this issue comes up, and it is shown as blinking pixels around contrast areas on the display. I'll attach two pictures showing working and non-working display.

 

I have made a configuration that only outputs two pixels on the display, thus making manual decoding of the LVDS signals more easy. This has shown that in the case where the display isn't working properly, the output from LVDS0 second data pair alternates (which it of course shouldn't since the pixels are of constant color). In other words, it looks very much like the iMX6 outputs the wrong data from time to time. Even more, memory dumps have shown that the correct data exists in the memory.

 

The display used is a 10.1 inch display with 1280 x 3(RGB) x 800 resolution. It uses the SPWG mapping and ignores VS, HS and CTL.

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