| From: | "Thomas E. Spanjaard" <tgen@xxxxxxxxxxxxx> |
| Date: | Thu, 12 Nov 2009 12:27:20 +0000 |
Matthew Dillon wrote: > :Alexander Polakov <polachok@gmail.com> added the comment: > : > :Can you please try this diff [1] ? I don't have hardware with both SMP and = > :EC. > : > :[1] http://leaf.dragonflybsd.org/~polachok/acpi-ec-lock.diff > > How can I tell if I have this feature? What is acpi-ec? That is an ACPI Embedded Controller, a microcontroller device which manages a system and offers an interface via ACPI to query its status and execute commands. Examples are setting brightness levels on an LCD screen if the graphics controller doesn't allow you to set it, advanced queries regarding the state of a battery in a laptop, acceleration sensors, the ThinkLight in IBM/Lenovo ThinkPad laptops, etc. Most (modern) laptops have one, and if you see acpi_ec attach in dmesg you probably do as well. Cheers, -- Thomas E. Spanjaard tgen@netphreax.net tgen@deepbone.net
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