On Fri, Jul 13, 2012 at 5:59 PM, Guo Tang <guo.tang at sonoartis.com> wrote: > Hi, > Greetings! > > I have a system with GM 45 chip set. I want to have 3 displays: LVDS, VGA, > and TV output. There is no need for > them to show different contents. So only clone display is required. From GM > 45 chip set spec, looks like only 2 > display ports can be active at the same time. Is it possible to modify > driver to get 3 clone displays? Any suggestion > to where in the driver/Kernel I can poke around would be appreciated. This does not work, because both LVDS and TV run on a fixed clock (which does not necessarily agree with the dotclock of the mode), hence you can't clone them. At least not in all cases, and imo trying to support such a configuration in more cases is wasted effort. If you need to drive that many outputs, you're not in the market of a low-end igd solution like gm45 imho. Cheers, Daniel -- Daniel Vetter daniel.vetter at ffwll.ch - +41 (0) 79 364 57 48 - http://blog.ffwll.ch
