IOAPIC - probe failed with error -22

This document (7017631) is provided subject to the disclaimer at the end of this document.


SUSE Linux Enterprise Server 12 Service Pack 1 (SLES 12 SP1)


During boot there comes messages similar to

   [ 6.952497] ioapic: probe of 0000:00:05.4 failed with error -22
   [ 6.959542] ioapic: probe of 0000:80:05.4 failed with error -22

indicating maybe an issue.


This can safely be ignored as it is a false alarm.

The error of the IOAPIC at this moment is irrelevant and has no impact on the system.


This stems from IOAPIC Hotplug not being implemented as ACPI but as PCI driver.

At boot the IOAPIC should be enabled before the PCI and work on this is in progress.

Additional Information


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  • Document ID:7017631
  • Creation Date: 23-May-2016
  • Modified Date:03-Mar-2020
    • SUSE Linux Enterprise Server

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