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Old 12-13-2020, 05:20 PM   #1
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ACPI Error: AE_NOT_FOUND - dspkginit-414

After upgrading from Debian Stretch to Buster I encounter the following error message at boot time:

ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - \_PR_CPU0 (20180810/dspkginit-414)

This slows the boot process. Any idea what this is about and what to do about it?
Old 12-13-2020, 11:36 PM   #2
Ser Olmy
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It's a firmware bug. ACPI entries not conforming to the ACPI specifications is an extremely common problem.

It happens because Windows has its very own (lax) rules for parsing ACPI tables, and most hardware is only really tested properly against Windows.

Since the problem occurred after an OS upgrade, it would seem that more recent kernels take issue with this particular ACPI error. Short of performing a BIOS upgrade, assuming one is available for your system, there's nothing much you can do to resolve the issue.
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