hybrid-graphics-linux team mailing list archive

[Quentin Gibeaux <plusquezero@xxxxxxxxx>]

>
>
> To set mode to 3 do
>

> echo "\OSGS 0x03" > /proc/acpi/call
>

> this will affect your next boot.
>

This works for me, thanks !

2010/12/27 Raphael Metzler <raphdev@xxxxxxxxxxxxxx>

> Merry christmas list and all 1015pn fans,
>
> By analysing Asus GraphicSwitch utiliy I managed to figure out how the
> graphic switch works so rebooting shouldn't be neccessary anymore.
>
> There are 2 relevant modes:
> 1 = Ion only (meaning only nvidia chip is visible to linux)
> 3 = Optimus (meaning nvidia + intel are visible to linux and nvidia
> chip can be turned off)
>
> You have to set mode 3 (Optimus) on every boot or else mode will be
> reset to mode 1 (this is also done by GraphicSwitch under Windows).
>
> To set mode to 3 do
>
> echo "\OSGS 0x03" > /proc/acpi/call
>
> this will affect your next boot.
>
>
> To check your current mode do
>
> echo "\AMW0.DSTS 0x90013" > /proc/acpi/call
> cat /proc/acpi/call
>
> Mine for example is 0x30003 meaning
> - first byte 0x03 means mode 3 (returnvalue &= 3)
> - logical AND with 0x10000 and right-bitshift 16 bytes gives whether
> Optimus is supported (1=true, 0=false): here 1
>
> Please confirm.
>
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