Kernel log showing repeated ACPI mutex, parse/execution errors

[castalia]

I'm running Dapper (2.6.15-25-386) on a Toshiba A105-S2712.

The system boots successfully, but the kernel log is posting numerous ACPI error messages. More precisely, a group of 6 messages is posted every minute or so, where the last 3 are a repeat of the first 3. They appear to be issued from:

linux-source-2.6.15/drivers/acpi/executer/exmutex.c
linux-source-2.6.15/drivers/acpi/parser/psparse.c

The messages are:

ACPI-0240: *** Error: Cannot release Mutex [MUT1], not acquired
ACPI-0517: *** Error: Method parse/execution failed [\_SB_.RDEC] (Node df7c25c0), AE_AML_MUTEX_NOT_ACQUIRED
ACPI-0517: *** Error: Method parse/execution failed [\_TZ_.TZCL._TMP] (Node df7c97c0), AE_AML_MUTEX_NOT_ACQUIRED

FWIW, this problem did NOT arise when running Breezy (2.6.12-10-386).

[Daniel T Chen (crimsun)]

Are you able to resume from suspend-to-RAM and/or from suspend-to-disk (hibernate) successfully?

[castalia (mshelor)]

Yes, I'm able to resume successfully in both cases. Suspend and Hibernate appear to function properly in all respects.

However, in the case of Shutdown, the system now requires me to manually turn off the power. With Breezy, it powered down automatically.

[Launchpad Janitor (janitor)]

Beginning with the Hardy Heron 8.04 development cycle, all open Ubuntu kernel bugs need to be reported against the "linux" kernel package. We are automatically migrating this linux-source-2.6.15 kernel bug to the new "linux" package. We appreciate your patience and understanding as we make this transition. Also, if you would be interested in testing the upcoming Intrepid Ibex 8.10 release, it is available at http://www.ubuntu.com/testing . Please let us know your results. Thanks!

[Leann Ogasawara (leannogasawara)]

The Ubuntu Kernel Team is planning to move to the 2.6.27 kernel for the upcoming Intrepid Ibex 8.10 release. As a result, the kernel team would appreciate it if you could please test this newer 2.6.27 Ubuntu kernel. There are one of two ways you should be able to test:

1) If you are comfortable installing packages on your own, the linux-image-2.6.27-* package is currently available for you to install and test.

--or--

2) The upcoming Alpha5 for Intrepid Ibex 8.10 will contain this newer 2.6.27 Ubuntu kernel. Alpha5 is set to be released Thursday Sept 4. Please watch http://www.ubuntu.com/testing for Alpha5 to be announced. You should then be able to test via a LiveCD.

Please let us know immediately if this newer 2.6.27 kernel resolves the bug reported here or if the issue remains. More importantly, please open a new bug report for each new bug/regression introduced by the 2.6.27 kernel and tag the bug report with 'linux-2.6.27'. Also, please specifically note if the issue does or does not appear in the 2.6.26 kernel. Thanks again, we really appreicate your help and feedback.

[MillenniumBug (millenniumbug)]

This bug report concerns only obsolete releases of Ubuntu. Is it still relevant?

[MillenniumBug (millenniumbug)]

Closing this bug report due to obsolete versions and lack of activity.

If a similar bug appears in Ubuntu 10.10, please open a new report.