I got the same error message during the Testcase [1] on the same device BEFORE the installation started. There also were weird graphical artifacts displayed for a few seconds after this error message.
[1] Install (Safe Graphics mode) in Ubuntu Desktop (Legacy) amd64 in Focal 20.04.6 http://iso.qa.ubuntu.com/qatracker/milestones/443/builds/274052/testcases/1733/results
I got the same error message during the Testcase [1] on the same device BEFORE the installation started. There also were weird graphical artifacts displayed for a few seconds after this error message.
[1] Install (Safe Graphics mode) in Ubuntu Desktop (Legacy) amd64 in Focal 20.04.6 iso.qa. ubuntu. com/qatracker/ milestones/ 443/builds/ 274052/ testcases/ 1733/results
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