RaTTuS wrote:start again from scratch
just install raspbian - not noobs
have a keyboard and screen plugged in
power the RPI up and see what happens what lights up and is displayed on the screen
I never use Noobs. I rarely use a Mouse or Keyboard (if I do they are simple and use usb cables, nothing fancy)
Only HDMI and Ethernet are plugged in 99% of the time.
Red light lights up and doesn't flicker.
Green light usually flickers as you would expect, but when it dóesn't boot it's a solid green light. Maybe a few blinks before the solid light, but it's hard to tell as it doesn't happen too often.
If I want to know for sure what the green light does exáctly I have to try and boot it untill it fails, but I don't want to boot it 20 times in a row, because that will, improve the chance of it not booting it seems. I think it's because it's hot. I have heard similar problems from 1 or 2 other (local) Pi users. Just like the Old pi wouldn't boot if the SD or the Pi itself got hot.
Rebooting is also a good way to improve the chance of it failing.
But when it fails it hangs @ waiting for /dev to be populated and then I get endless rows of I/O errors and warnings about it not being able to read certain sectors.
Since I've replaced my Pi (previous one's MicroSD reader was put on crooked) the amount of failed boots went from 50% to about 12%. But except for that improvement the problem is identical.
I can accept how it functions now. More people (locals) report the same thing happening. It could still be a power thing. In the Netherlands the official adapters are not available, most adapters are cheap garbage so people tend to stick with their Mobile chargers. There is only about 1 good brand you can find in electronics stores. Velleman. I got that a 5v 3.1A Ipad charger from them and the best cable I could get my hands on (the one from my tablet) and the fastest SD card they sell in a local store that sells a buttload of Pi's. But since everybody uses different adapter it's hard to find more then a handful of people that use the same adapter as you. Making it hard to determine whether the adapter is actually good. My local electronics store says it works for all Pi customers they have, but I don't know if they sell a lot of Pi2's as well.
Does somebody know what makes a good adapter for the Pi2?
A friend of mine can just make or order me an adapter exáctly how I like it.
Because I got an adapter that delivers 3.1A @ 5v without dropping below 4.65V but people keep blaming the adapter and I assume they have a reason to do so.