Bruce Crowthorne
Posts: 89
Joined: Wed Jan 11, 2012 7:19 pm
Location: Sussex, UK

Inconsistent partial boot

Wed Nov 28, 2012 7:17 pm

I finally got my RasPi, and bought a pre loaded Debian SD card.
Hooked it all up (HDMI to display, power to board, mouse, keyboard)

It seems to either boot inconsistently or not at all.

I get the flashing LEDs and I have had video output, I even had the config screen.
I stupidly selected "boot straight to X Windows"
And it did - a couple of times, I even got the mouse to respond once.

So now, it goes through the flashing LEDs, isn't putting anything on the screen, powers up the mouse (it has an LED) occasionally - but otherwise it is dead!!!!

Any constructive suggestions gratefully accepted .....

Bruce Crowthorne
Posts: 89
Joined: Wed Jan 11, 2012 7:19 pm
Location: Sussex, UK

Re: Inconsistent partial boot

Wed Nov 28, 2012 7:35 pm

Hmmm....
I had a look at the SD card contents (really just to make sure there were files on there. So that let the RaspPi fully power down / cool down or whatever for a few minutes.

Plugged it all back in and it booted into Xwindows - hooray!
I even got a browser and reached Google

..... then it just hung :-(

Do they all do this?

kbootb
Posts: 12
Joined: Wed Feb 01, 2012 9:32 pm

Re: Inconsistent partial boot

Wed Nov 28, 2012 7:47 pm

No. I got mine last week. Had it running for hours. Left it idling for 6 hours. I locked it up once clicking on something I shouldn't have.

I pushed it hard running the CPU at close to 100% for over an hour and it was warm but nothing scary.

Sounds like you may have a power supply problem.

bgirardot
Posts: 517
Joined: Wed Oct 10, 2012 6:20 am
Location: Switzerland

Re: Inconsistent partial boot

Wed Nov 28, 2012 7:49 pm

No, they do not all do that.

It could be a power problem. But that could be your power problem, like a poor power supply, or the pi's power problem.

Have go with the trouble shooting guide:

http://elinux.org/R-Pi_Troubleshooting

And maybe have a look at the last few pages of this thread:

http://www.raspberrypi.org/phpBB3/viewt ... 28&t=20657

I would also suggest maybe trying to put the latest Raspbian OS onto your SD card, it is pretty easy, just follow the directions linked to from the download page on the main raspberrypi.org site.

Keep us informed and let us know how you get on.

Bruce Crowthorne
Posts: 89
Joined: Wed Jan 11, 2012 7:19 pm
Location: Sussex, UK

Re: Inconsistent partial boot

Wed Nov 28, 2012 7:53 pm

I am using an HTC USB phone charger as a PSU, rated at 1A, so I am assuming it is sufficient.

Swapped to a second supply (newer HTC phone charger) but same result.
Then tried running off a USB port on my laptop - again same result.

What are you using as a PSU?

bgirardot
Posts: 517
Joined: Wed Oct 10, 2012 6:20 am
Location: Switzerland

Re: Inconsistent partial boot

Wed Nov 28, 2012 8:07 pm

Both of those sound sufficient to me and the fact you get the exact same behavior with both suggests the issue is probably elseware.

Check your voltage across TP1 and TP2, that might answer the question right there.

Then I would try one more SD card with the most recent raspbian from the foundation's site and see if that makes a difference.

kbootb
Posts: 12
Joined: Wed Feb 01, 2012 9:32 pm

Re: Inconsistent partial boot

Wed Nov 28, 2012 8:20 pm

Bought it from RS when I ordered the Pi. Cost a fiver.
Outputs 5v at 1200 mA

I looked at my kindle and other adapters and they are only putting out .8 A

Bruce Crowthorne
Posts: 89
Joined: Wed Jan 11, 2012 7:19 pm
Location: Sussex, UK

Re: Inconsistent partial boot

Thu Nov 29, 2012 8:18 am

Thanks for the inputs.
I checked the other thread that was suggested - looks like mine is part of a bad batch.
So I am returning it to RS today - fingers crossed they don't take too long to get me a new one....

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