On Mon, Aug 20, 2012 at 04:36:40PM +0100, Matthew Garrett wrote: > On Mon, Aug 20, 2012 at 10:31:04AM -0500, Seth Forshee wrote: > > + /* > > + * For secondary graphics devices shouldn't be initialized > > + * until the handler and primary graphics device have been > > + * registered with vga_switcheroo. > > + * > > + * FIXME: Is vga_default_device() reliable enough for this > > + * purpose? > > + * > > + * FIXME: If vga_switcheroo is disabled secondary devices > > + * never gets initialized. Is this okay? Maybe it is, since > > + * we can't switch to the secondary GPU anyway. > > + */ > > Won't this break the multiple cards with independent outputs case?
Yes, if they don't have a switcheroo handler. I only have experience with one such machine, which had optimus graphics. My recollection is that it did have a switcheroo handler, which was only capable of controlling power to the discrete card.
