http://bugzilla.kernel.org/show_bug.cgi?id=12620
------- Comment #4 from [email protected] 2009-02-01 18:33 ------- Hi, Erik Thanks for so quick response. From the acpidump there exists the ACPI fan device. When the temperature is above the threshold returned by the _AC0 object, OS will try to turn on the ACPI fan device to cool the temperature. But unfortunately it is a bogus FAN device. There is no ACPI object(_PS0/_PS3) to turn on/off the FAN device. >Device (FAN) { Name (_HID, EisaId ("PNP0C0B")) Method (_INI, 0, NotSerialized) { Store (TP1H, CTOS) Store (TP1L, CTHY) } } At the same time there exists the following definition under the scope of \_GPE: >Method (_L00, 0, NotSerialized) { Notify (\_TZ.THRM, 0x80) } Maybe when the temperature is above the threshold, the ACPI event(0x80) is sent to the thermal object. But OS can do nothing to cool the temperature. So the ACPI event(0x80) will continually be sent to the thermal object. In such case the kacpi_notify will chew up 50-60% CPU. Will you please check whether there exists the BIOS option related with FAN device? Thanks. Will -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug, or are watching someone who is. ------------------------------------------------------------------------------ This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword _______________________________________________ acpi-bugzilla mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/acpi-bugzilla
