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SubjectRe: 2.6.9-rc1: scrolling with tdfxfb 5 times slower
Date
On Wednesday 01 September 2004 19:55, Paolo Ornati wrote:
> > Ok, I think I know why the scrolling speed is too slow, the driver is not
> > maximizing the extra memory of the framebuffer.
> >
> > This patch sets info->var.yres_virtual to the maximum upon driver load.
> > If this works, it's possible to get sub-1 second scrolling speed.
> >
> > Reverse the previous patch first, then apply this patch.
>
> Results for 2.6.9-rc1 + your patch (time cat MAINTAINERS):
>
> CONFIG_FB_3DFX_ACCEL=n
> ~1.27 s
>
> CONFIG_FB_3DFX_ACCEL=y
> ~0.18 s
>
> BUT with CONFIG_FB_3DFX_ACCEL enabled I get strange video
> "corruptions" (like bitmaps with random colors) that go away simply
> swithcing to another console and than back to the previous.

And another suggestion:

Try to comment out FBINFO_HWACCEL_COPYAREA.

Tony


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