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Installation fails with ACPI Exception

This document (7009309) is provided subject to the disclaimer at the end of this document.


SUSE Linux Enterprise Server 10 Service Pack 4


On certain machines the boot process of the installation stops with the following or a similar repeating message:

ACPI Exception (utmutex-0257): AE_TIME, Thread 0 could not acquire Mutex [8] [20060127]


Abort the installation and try it again. It should work fine then. The kernel/boot failure only happens once in 5 attempts. After the installation immediately perform an update to the latest maintenance kernel (version or higher) which includes a fix for this behavior.


Additional Information

The issue occured because of a bug in the  ACPI support stack of the installation kernel.


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  • Document ID:7009309
  • Creation Date: 07-Sep-2011
  • Modified Date:03-Mar-2020
    • SUSE Linux Enterprise Server

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