I've looked at every topic about all these problems on this forum and stackoverflow and didn't find a whole lot. I had a little overlap with many topics, but usually the problems were RP1 based, about poor or unsupported SD cards and weak or unstable adapters, but I don't think any of the topics explain my problems.
Sometimes my Pi won't boot.
With my first MicroSD card (new and supported 4gb class 6 Sandisk) I sometimes had it not load from the SD card and I got a solid green light. I was using a case and the sd card touched the case ever so slightly while in the holder, but it was possible that it changed the angle by a degree or 2 I guess. I tried removing the SD card and putting it back a few times and it seemed to work, but it might have been just random.
A few days later I ordered a new Integral class 10 16 GB MicroSDHC card that's in the supported list. But again it doesn't always boot. I get an HDMI signal to the TV, I see the rainbow screen and then it attemps to load but I get some I/O errors and the green and red light are on constantly. It keeps trying and trying but gets nowhere. I've had this since the second or third boot since getting this card.
After a boot or 6? (Of which 2 failed) I formatted the disc and reïnstalled the last Raspbian build. I also cut away some plastic so the SD card could slide in without rubbing against the case.
After that it worked fine for 2 or 3 boots, but today I had to try 5 times in a row to get into Raspbian. It was a bit hot at the moment as it was lying next to a PS3 that was on. (I saw some old RP1 heat problem topics so I thought I'd mention it)
Later it booted in the first or second try. I'm not sure.
It has never crashed. I had a single application lock up at one point but it worked fine again after 5 seconds. So I don't think it overheats or anything. I never just pull the plug, I shut the Pi down properly.
I haven't overclocked it or anything, I had barely put any software on it and only set up the way the UI looks, SSH and VCN, but no real config changes had been made. I use a 5V 3.1A Velleman adapter.
I think I remember reading that the I/O errors are usually associated with SD Card corruption. Do you guys think this is the case? Because it doesn't give me those errors all the time and when it finally boots I can change settings and download files on to the MicroSDHC without problems.
Then there's 2 more problems that might be related. My Pi is connected to my TV via HDMI, and the TV via the 3.5mm jack output to an Amp. Yea it's a bit of an oldschool set up. My Pi is connected to the network via a cable. When I have Pi, TV, Amp and Router on and shut down the Pi, my amp starts to buzz. When I disconnect the network cable or the HDMI cable the buzz stops.
This is not a big problem to me, but it reminds me of when an ungrounded guitar amp buzzes when you pull out the jack cable, so it made me think about grounding. I know very little about electronics, but I could imagine the buzzing (and maybe even the sd card problems?) could have something to do with the pi, modem, tv and amp not being grounded. They only have those 2 pole european plugs.
And then there's the problem that when I put my SD cards in the PC I only see about 56 mb of storage space in there. I have seen this before formatting the 4gb card, and after formatting they were still about 56 MB large according to the file explorer. In a different windows application I could see that there was more space, but I could only remove the second partition, not create a new one or resize the first partition. I could install a 3-ish GB? Raspbian image, so the space is still available, but can you never use it in the PC again after using it in the Pi? Or is it just my PC or (built in) Card reader acting funny?
Again no idea if related, but since the I/O error might have something to do with SD card corruption I thought I'd mention it here as well.
Sorry for the long post and thanks for reading, any info would be greatly appreciated. I don't wanna be that guy that shows up at the store blaming the Pi for something I could have fixed myself.
Last edited by OttovanZanten
on Wed Apr 29, 2015 12:03 pm, edited 1 time in total.