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  1. Bug #1283589
  2. Comment #60

Comment 60 for bug 1283589

Revision history for this message
In , sebastian.riemer (sebastian.riemer-linux-kernel-bugs) wrote :

It seems like everything related to the embedded controller "Device (H_EC)" doesn't work. Power source "ADP1", the battery "BAT1" and "LID0" are connected to it. Bug 45461 is related. LID0 should return the 1-bit value "LIDS" from the Controller registers with method "_LID". This method is described in the ACPI Spec: http://www.acpi.info/DOWNLOADS/ACPIspec50.pdf .

The "_LID" method is only called by the following: "Notify (LID0, 0x80)" and this is part of "Method (_Q5E, 0, NotSerialized)" as well as "Method (_Q5F, 0, NotSerialized)" which are embedded controller queries.

So if nothing queries that embedded controller, then it can't be reported if the lid is closed or not. Perhaps, something has to activate that embedded Controller first.

It is the Intel HM76 chipset.

http://www.intel.com/content/www/us/en/chipsets/performance-chipsets/mobile-chipset-hm76.html

They have an OEM manual where they describe their embedded controller.

http://www.intel.com/content/dam/www/public/us/en/documents/datasheets/7-series-chipset-pch-datasheet.pdf

Look at page 197. The EC is connected to the SMBus via "SMLink1".