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This was an error on my part. When I redid the setup from scratch I failed to set up rng-tools correctly.
CURE: Uncomment HRNGDEVICE specifier in /etc/default/rng-tools file.
... # Set to the input source for random data, leave undefined # for the initscript to attempt auto-detection. Set to /dev/null # for the viapadlock and tpm drivers. #HRNGDEVICE=/dev/hwrng #HRNGDEVICE=/dev/null HRNGDEVICE=/dev/TrueRNG ...
- This reply was modified 5 years, 4 months ago by rcs.
USE CASE: Newly purchased TrueRNGpro with current rule on MINT 19 with a 4.15.0-38-generic kernel.
PROBLEM: Using rng-tools 5-0ubuntu4 from the default MINT repositories execution of /etc/init.d/rng-tools start posts rngd read errors to /var/log/syslog and rngd halts.
DIAGNOSIS: TrueRNGpro functions properly (e.g. ACT light comes on briefly when a command such as head -c 512K /dev/TrueRNG > /tmp/foo.dat is executed). The default stty configuration shown below on MINT 19 or a modified rule to match the configuration given earlier in this thread for MINT 15 both exhibit rngd read errors.
CURE: rngd does not produce errors. Any ideas? Thank you in advance!
==== RULE ====
SUBSYSTEM=="tty", ATTRS{product}=="TrueRNGpro", SYMLINK+="TrueRNG", RUN+="/bin/stty raw -echo -ixoff -F /dev/%k speed 3000000" ATTRS{idVendor}=="16d0", ATTRS{idProduct}=="0aa0", ENV{ID_MM_DEVICE_IGNORE}="1"
==== STTY CONFIGURATION ====
# stty -F /dev/TrueRNG speed 3000000 baud; line = 0; min = 1; time = 0; -brkint -icrnl -imaxbel -opost -isig -icanon -echo
==== RNGD ERROR FROM SYSLOG ====
rngd: read error rngd: message repeated 99 times: [ read error] rngd: No entropy sources working, exiting rngd
- This reply was modified 5 years, 4 months ago by rcs.
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