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port-i386/44408: More interrupt/locking errors in ACPI suspend

>Number:         44408
>Category:       port-i386
>Synopsis:       More interrupt/locking errors in ACPI suspend
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    port-i386-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Jan 18 13:05:00 +0000 2011
>Originator:     Jukka Ruohonen
>Release:        NetBSD 5.99.43



During suspend:


acpi0: entering state S3
Flushing disk caches: done
ACPI Error: Mutex [0x0] is not acquired, cannot release (20100528/utmutex-422)
ACPI Error: Could not release AML Interpreter mutex (20100528/exutils-249)
 hwsleep-0399 [13328] EnterSleepState       : Entering sleep state [S3]
ioapic0 reenabling


This appers not to be fatal (i.e. the system still suspends and resumes),
but failure to acquire the interpreter mutex is a serious bug that may cause
other problems ("works by chance"). Could be a bug in ACPICA.


Suspend and resume.


Under investigation.


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