Messages in this thread | | | Subject | Re: atyfb in 2.5.51 | From | "David S. Miller" <> | Date | 11 Dec 2002 00:42:29 -0800 |
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On Tue, 2002-12-10 at 22:18, James Simmons wrote: > > AFAIK, the X "mach64" driver in XF 4.* doesn't care about UseFBDev. > > Marc Aurele La France (maintainer of this driver) is basically allergic > > to kernel fbdev support. > > :-(
I've always stated that the whole fbdev model was flawed, it makes basic assumptions about how a video card's memory and registers are accessed (ie. the programming model) and many popular cards absolutely do not fit into that model.
> I will have to go threw the X code to fix that :-(
There is nothing to fix. You simply must restore the video state when the last mmap() client goes away. The __sparc__ code does exactly that.
I think relying on an application that mmap's a card to perfectly restore the state would work in a perfect world, one we do not live in. Furthermore, fixing up the state like I am suggesting makes life much simpler for people actually working on things like X servers and other programs directly programming the ATI chip.
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