Hi Sylvain, good news, while i`m writing this, i'm using less than 9 Watts of energy :). This is a great piece of code for me and probably others! Thank you! If you google a little bit, you'll find out why it works on Acer: Switchable Graphics was a cooperation between Intel and ATI. So, Acer AND Lenovo are in fact are using the same stuff. And i would really really wonder if Lenovo or Acer were developing such hardware techniques themselves. I would put a website for informing other Thinkpad and Acer users and make your code easier downloadable (the opensuse online archives don't keep attachments, i had to download the whole august mbox file). Would that be okay for you? Someone from the Ubuntu guys also already found your entry: http://ubuntuforums.org/showthread.php?p=7944950 Alex
I had the same situation on my Lenovo U330. I digged into it, and switching off the ATI card was taken care of by the embedded controller, through an ACPI call.
Check the mailing list archives, I already sent the related code ... It would probably not work exactly the same way for you I guess, but you can try ;-)
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