Chosen Solution
I recently had to change my Z3 Compact Display for the second time (broken display). The first time it worked all well but this time the display only showed scrambled graphics. At the boot sequence with the display of the “android” font, it all looked normal but after that, the blue-ish start-sequnece (with the flowing lines etc.) was completely pixelated and scrambled. also the upcoming lockscreen was pixelated and scrambled in the same way. Is it the mainboard/graphics unit or is it a faulty display? thanks for help and advice!!
Either a faulty display or a connector not fully seated are the most likely issues. Did you replace the display yourself?
Did you ever figure out what was causing this? Did you try with another display? I’m about to buy a third display (first arrived broken, second was a chinese clone with artifacts like you describe) and would like to rule out a faulty motherboard before I do.
