Hello,
I discussed the below problem with the QubesOS team on Github
(https://github.com/QubesOS/qubes-issues/issues/4493) and they
suggest that this seems to be a problem with Xen, and suggested that
I post it to this e-mail address.
I have problems restoring backups in QubesOS release 4.1.2 on one of
my machines.
Other users reported the issue too, but no QubesOS developer seemed
to be able to reproduce it, therefore nothing happened for a while
and the assumption has been that it's some sort of hardware problem.
I analyzed the problem down to the "scrypt" tool
(https://www.tarsnap.com/scrypt.html) falsely complaining that the
password would be wrong.
I proceeded and re-compiled the "scrypt" tool in it's latest version
and found that the self-tests show intermittent erratic behavior.
This issue only happens with QubesOS/Xen Kernel, if I boot into a
kernel without Xen, the problem can't be observed.
The problem can only be observed on one of my machines which is a
Dell Inspiron 5675
with an AMD Ryzen 7 1700 Eight-Core Processor.
I hope you can help with this issue.
With Xen - self test fails intermittently
Without Xen - self test succeeds
Regards
~Joe
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