2015-02-24 0:24 GMT+01:00 Rafael J. Wysocki <rjw@xxxxxxxxxxxxx>: > On Sunday, February 22, 2015 01:33:09 PM Jörg Otte wrote: >> Starting with kernel 3.19.0-05184-g18320f2, I often find my notebook >> running with 'powersave' policy even if it is on AC. >> >> It turned out that /sys/class/ACAD directory is missing and in the >> logs I see: >> >> ACPI Error: Cannot release Mutex [MUT0], not acquired (20150204/exmutex-376) >> ACPI Error: Method parse/execution failed [\_SB_.ACAD._PSR] (Node >> ffff880216028d48), AE_AML_MUTEX_NOT_ACQUIRED (20150204/psparse-536) >> ACPI Exception: AE_AML_MUTEX_NOT_ACQUIRED, Error reading AC Adapter >> state (20150204/ac-131) >> >> At the last 25 startups since 3.19.0-05184-g18320f2 it occured 13 times. >> >> It does not occur with kernels older than 3.19.0-05184-g18320f2. > > Which mainline commit is that? 18320f2 Merge tag 'pm+acpi-3.20-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm > > The only changes in 4.0-rc1 that can affect that are the ACPI EC updates IIRC. > > Is there a chance to try the acpi-ec branch from linux-pm.git and see if the > problem is there? Should be no problem. I will give it a try. Thanks, Jörg -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
