Ubuntu Read Error

[BrianX]

Im running latest Ubuntu Linux 16 LTS

I followed the install instructions without issues.

In checking the logs I get this read error. Permissions issue?

Jan 5 13:10:51 X02 systemd[1]: Starting rng-tools.service…
Jan 5 13:10:51 X02 rng-tools[6422]: Starting Hardware RNG entropy gatherer daemon: rngd.
Jan 5 13:10:51 X02 rngd: read error
Jan 5 13:10:51 X02 rngd: message repeated 99 times: [ read error]
Jan 5 13:10:51 X02 rngd: No entropy sources working, exiting rngd

[BrianX]

This may be the same error as an old post. When I check 99-TrueRNG.rules I get. An older post says to change /bin/stty raw -echo -ixoff -F /dev/%k speed 3000000
to
/bin/stty raw -echo -ixoff -F /dev/TrueRNG speed 3000000

IS THIS CORRECT?

MY 99-TrueRNG.rules

# ubld.it TrueRNG
#
# This rule creates a symlin to newly attached CDC-ACM device
# Also includes fix for wrong termios settings on some linux kernels
# New! includes ignore for modemmanger
# (Thanks neoaeon)
SUBSYSTEM==”tty”, ATTRS{product}==”TrueRNG”, SYMLINK+=”TrueRNG”, RUN+=”/bin/stty raw -echo -ixoff -F /dev/%k speed 3000000″
ATTRS{idVendor}==”04d8″, ATTRS{idProduct}==”f5fe”, ENV{ID_MM_DEVICE_IGNORE}=”1″

An

[BrianX]

After change:

sudo service rng-tools status
● rng-tools.service
Loaded: loaded (/etc/init.d/rng-tools; bad; vendor preset: enabled)
Active: active (exited) since Fri 2018-01-05 13:49:15 EST; 7min ago
Docs: man:systemd-sysv-generator(8)

Jan 05 13:49:15 X02 systemd[1]: Starting rng-tools.service…
Jan 05 13:49:15 X02 rng-tools[2481]: Starting Hardware RNG entropy gatherer daem
Jan 05 13:49:15 X02 rngd[2484]: read error
Jan 05 13:49:15 X02 systemd[1]: Started rng-tools.service.

[BrianX]

I solved it

Final Solution:

cd /etc/default
sudo nano rng-tools

Change
#HRNGDEVICE=/dev/hwrng
To
#HRNGDEVICE=/dev/TrueRNG

# Configuration for the rng-tools initscript
# $Id: rng-tools.default,v 1.1.2.5 2008-06-10 19:51:37 hmh Exp $

# This is a POSIX shell fragment

# 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

# Additional options to send to rngd. See the rngd(8) manpage for
# more information. Do not specify -r/–rng-device here, use
# HRNGDEVICE for that instead.
#RNGDOPTIONS=”–hrng=intelfwh –fill-watermark=90% –feed-interval=1″
#RNGDOPTIONS=”–hrng=viakernel –fill-watermark=90% –feed-interval=1″
#RNGDOPTIONS=”–hrng=viapadlock –fill-watermark=90% –feed-interval=1″
#RNGDOPTIONS=”–hrng=tpm –fill-watermark=90% –feed-interval=1″

[BrianX]

Very odd because I know saved it during the setup and then it reverted back on reboot. Oh well. Live and learn. its all fixed now.

[Author]

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