I'd also like to help out with this. I have an Alienware m11x R1 with switchible intel 4500 and nvidia 335M.
On Jul 17, 2010, at 2:45 AM, Dave Airlie <airl...@gmail.com> wrote: > So I'd really like to finish the _DSM support in nouveau so we can > actually switch the GPU over on the non-optimus systems. > > There are two things left to do: > > a) figure out what values to pass the DSM method to trigger the MUX, > It looks like method 0x5 is the one to trigger the mux switch but I've > no idea yet what values to pass it to trigger the mux switch. > > b) figure out how to get the LVDS DDC lines and make nouveau find the > panel, at the moment it fails to find the panel when booted and intel > is in control. > > looking at (a) I expect we could pass a bunch of values to the ACPI > method possibly using acpi_call to switch the mux and switch it back, > > It looks like passing 0 will return the current toggle status, then > its a matter of working out which of the top bits are doing what, > >> From reading one DSDT I can see, > > if bit 31 set, then bit 30 is some sort of notify, then bits 25,26,27 > are used to work out some values stored in a TOGF > > otherwise bit 24 is used for something, then bits 12,13,14, and 3,2,1, > and it stores some values for CRT/LCD/TVout, which may again be > toggles. > > If someone with the hardware and can use acpi_call it would be nice to > try and map out some of these things, at least initially a value that > will turn the Intel LCD off and back on. > > The DSDT I'm using at the moment is attached to bug 16403. > > Dave. > > _______________________________________________ > Mailing list: https://launchpad.net/~hybrid-graphics-linux > Post to : hybrid-graphics-linux@lists.launchpad.net > Unsubscribe : https://launchpad.net/~hybrid-graphics-linux > More help : https://help.launchpad.net/ListHelp _______________________________________________ Mailing list: https://launchpad.net/~hybrid-graphics-linux Post to : hybrid-graphics-linux@lists.launchpad.net Unsubscribe : https://launchpad.net/~hybrid-graphics-linux More help : https://help.launchpad.net/ListHelp