I am new user of Ubuntu 20.04, and recently I have been encountering these ACPI BIOS Error on my Acer device when I start it. I am not sure on how to fix it. Any suggestion is highly appreciated. 
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AdShil00
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2Does this answer your question? ACPI error on every boot – karel Oct 28 '22 at 04:29
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3If the computer boots and you can login without error, ignore. This is a known issue that is being worked on. – David Oct 28 '22 at 05:54