Check when rebooting or powering on from standby then still has the purple screen or if it is gone?
If it works, I can try to make it default on first boot/install.
There might be something else also causing it, I will just try to see if I can find it.
On RK3368 I didn't see this problem.
I think the problem happened because of the new U-boot that has changed a lot.
I think the old u-boot can also be flashed back and will solve lots of these problems including 1080p resolution not remembered on some tv's.
I will experiment a bit.
You can also try to pause a video after a while and play again and see if audio for 5.1 Dolby is correct again.
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