<div dir="ltr">My Sony Vaio (SZ1XP, 2 years old) already has a dual graphics card option, one with the "SPEED" option (nvidia) and the other with the integrated Intel graphics chip. When using Windows XP, one can switch to the other configuration, and a window will pop up saying something like: "you have chosen the STAMINA mode, please reboot". I am not sure how Linux would be able to detect that, but it's not happening right now. Keith? I guess what the new Intel Centrinos will do is enable this as a hot switch, without requiring reboot. <div class="gmail_quote">On Tue, Jul 15, 2008 at 7:13 AM, Keith Packard <<a href="mailto:keithp@keithp.com">keithp@keithp.com</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div class="Ih2E3d">On Tue, 2008-07-15 at 13:31 +1000, Drew Parsons wrote: > Switchable graphics sounds like a great idea for improving laptop > battery performance. Does Xorg already support it, selecting between > the intel and ati video drivers, say? Or have plans to implement it > already been drawn up? </div>Most of the work here is software, and while we'd love to do this under Linux, we haven't gotten there yet. Ideally, we'd have hot-plug video card support and could add/remove them on the fly. Making that work in the existing X server is a pile of new code. Making that work with direct-rendered 3D seems like a much bigger challenge... -- <a href="mailto:keith.packard@intel.com">keith.packard@intel.com</a> _______________________________________________ xorg mailing list <a href="mailto:xorg@lists.freedesktop.org">xorg@lists.freedesktop.org</a> <a href="http://lists.freedesktop.org/mailman/listinfo/xorg" target="_blank">http://lists.freedesktop.org/mailman/listinfo/xorg</a> </blockquote></div> </div>