Many problems with HDMI / micro USB / USB ports on my M3?

I hope you've moved on but just to mention...
Using the HDMI port for visual use I extremely power comsuming=heat generating.
Even running the bpi-m3 headless (no desktop) makes it hot enough to turn all remaining core's off.
Very unstable and not a distribution related issue. This is a generic Issue with the design of the processor fitted to the bpi-m3. It's framework is built to regulate heat by regulating the temperature by turning off cores. Leaving it up to any hardware designer to build a device with proper cooling. Unfortunately those of us looking for a capable single board computer with performance does not look for one with built on heat sinks and fans. If so we would buy a proper computer. So to sum things up - the "by the specs slower and cheaper" board are in practise much faster because we don't want a fan consuming power and generate noise.
So if you add "down clocking" in your own tweak of os and at a minimum a heatsink you will find a board at half the performance of a raspberry at more than twice the price. Make your own math but there are also many more stimulating projects and ready built solutions there so - why spend the time?
My bpi-m3 is resting on a shelf as a reminder of my performance hungry ego that took a toll.
Read forums first before you spend money, and you will avoid smart ass'es that don't hesitate to say - I told you so!
Best regards,
// I told you so...