I went back to 8.10, and looks like my memory of running this OK on 8.10
false, it was 8.04 with a patched kernel.

On 8.10 I get the same error message as I got with Jaunty Alpha 2, but
it looks like it does not matter after all: what is needed is to
activate the following line in /etc/default/rng-tools:

RNGDOPTIONS="--hrng=viakernel --fill-watermark=90% --feed-interval=1"

In an older, working setup, that used to be just "--hrng=via"

The HW random generator starts fine thereafter.

Note also, that the other alternative in /etc/default/rng-tools:

RNGDOPTIONS="--hrng=viapadlock --fill-watermark=90% --feed-interval=1"

does NOT work.

There is very little information on the VIA Padlock in general and
especially about that and Ubuntu.

For those searching for "VIA PADLOCK UBUNTU /dev/hwrng", here are some
links that helped me along the way, for Google to pick up:

http://ubuntuforums.org/archive/index.php/t-710243.html

https://www.grounation.org/index.php?2008/07/02/6-via-c7-padlock-on-
debian-etch

http://www.logix.cz/michal/devel/padlock/

http://a110wiki.de/wiki/VIA_Padlock

Right now I can not continue further with Jaunty Alpha 2, but if the
code base for rng-tools is same on that as it was on 8.10, the
assumption is that the error I saw there was just the same as the one I
fixed on 8.10 with the steps above.

So as far as I am concerned, this bug can be closed.

-- 
rng-tools fails to create device files in jaunty alpha 2
https://bugs.launchpad.net/bugs/312968
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