[onerng talk] OneRNG LED malfunction?

[Paul Warren]

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As another data point, my v1.0 device with latest code also does the
flashing at ~1/s LED thing, and doesn't put out any entropy unless I
enable the radio source as well.

I'll do some more testing tonight, and make sure, but I think that's
what was happening.

- --
Paul.

On 06/07/15 10:34, Paul Campbell wrote:
> On Sun, 05 Jul 2015 18:32:50 Max Nager wrote:
>> I am running Ubuntu 14.04 and after calling cat /dev/random
>> >/dev/null the LED does not dim. The case is also pretty hot, but
>> the LED has never blinked so I am not sure whether it is a
>> temperature failure or not.
> 
> if it's on solid it doesn't indicate a temperature failure - the
> LED means two things:
> 
> - normally it's on when the internal OneRNG entropy pool is full
> (your case), it dims when it's continually being drained and filled
> when rngd is pulling data from it
> 
> - when it detects that the avalanche circuit has shut down (strings
> of too many 0000s of 1111s on the input it starts to flash every
> second to indicate)
> 
> What I think people who are seeing possible temperature failures
> are seeing a combination of these two states.
> 
> My guess is that you are seeing a failure and rngd is not starting
> up - you can test it by logging on as root and entering
> 
> /bin/onerng.sh daemon /dev/ttyACM0
> 
> (replace ttyACM0 by whatever dmesg says your OneRNG is connected
> to)
> 
> We've had a few cases of people who've had problems because of
> issues with the Python gpg library - you'll see a failure verifying
> the firmware's signature - you can disable the irmware check in
> /etc/onerng.conf
> 
> Paul
> 
> PS: more generally - the first batch of reworked devices are on
> their way back to China for shipping, they run nice and cool - I'll
> be announcing how we're going to do replacements as a Kickstarter
> status posting in the next week or so
> 
> 
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