On Sun, Jul 29, 2012 at 11:51:48AM +0800, joeyli wrote:
Hi Luca,
於 六，2012-07-28 於 16:56 +0200，Luca Tettamanti 提到：
I just found the first problem (probably a BIOS bug): ATIF_FUNCTION_GET_SYSTEM_PARAMETERS is implemented in the DSDT, but the corresponding bit ATIF_GET_SYSTEM_PARAMETERS_SUPPORTED is not set :( I intended to use the method to set up the notification handler but now my BIOS says that it's not there even if it is... Can I assume some default values (e.g. notifications are enabled and will use 0x81 unless ATIF_FUNCTION_GET_SYSTEM_PARAMETERS says something different)?
Did you check your DSDT for there have some "Notify (VGA, 0x81)" statement in AFN0..AFN15? If YES, I think that means your machine in case the 0x81 is for ATI used by default.
Yes, my point is that the nofication is there, but since GET_SYSTEM_PARAMETERS is not announced I have not way to check it. IOW, what is implemented in the DSDT does not match what is announced by VERIFY_INTERFACE. For reference this is the DSDT: http://pastebin.com/KKS7ZsTt
Luca