What is acpi _OSI in Ubuntu 12.04 LTS

Some proprietary ACPI implementations need certain settings. Decent ACPIs will work out of the box. Acer, Sony and Alienware are known for this and enjoy lots of overheating issues and low battery lifes. These are catered for in Windows using drivers but as usual, Linux is left by the wayside. Often there is a boot option which makes things work (as you have found).

Thanks very much.i got it.
Do you have any document such as release note/change log about this changes.

Thanks very much.i got it.
Do you have any document such as release note/change log about this changes.

2012-05-24

吴道华

发件人： actionparsnip
发送时间： 2012-05-24 17:40:57
收件人： wudiwu727
抄送：
主题： Re: [Question #198262]: What is acpi _OSI in Ubuntu 12.04 LTS

Your question #198262 on Ubuntu changed:
https://answers.launchpad.net/ubuntu/+question/198262
    Status: Open => Answered
actionparsnip proposed the following answer:
Some proprietary ACPI implementations need certain settings. Decent
ACPIs will work out of the box. Acer, Sony and Alienware are known for
this and enjoy lots of overheating issues and low battery lifes. These
are catered for in Windows using drivers but as usual, Linux is left by
the wayside. Often there is a boot option which makes things work (as
you have found).
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https://answers.launchpad.net/ubuntu/+question/198262/+confirm?answer_id=0
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Try finding on Wiki will be great Help ::

Thanks

Huard, you can refer to http://odm.ubuntu.com/docs/ubuntu-bios-uefi-requirements.pdf, section 4.7.1.