[Development] Broken RNG on AMD Ryzen CPUs affect QTemporaryFile, Qt IFW

Sze Howe Koh szehowe.koh at gmail.com
Tue Feb 18 12:35:53 CET 2020


See https://forum.qt.io/topic/111473/maintenance-tool-error-cannot-open-file-for-writing-no-error/

In summary, a bad BIOS prevents QTemporaryFile from generating
different filenames each run. The Qt Installer encounters name
conflicts and produces a cryptic error message:

    Cannot open file "" for writing: No file name specified


Is this worth a post on the Qt Blog? I foresee many frustrated and
confused Ryzen users out there who would benefit from a reminder to
update their BIOS.


Regards,
Sze-Howe


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