via k8m890 very slow with vesa

Alex Deucher alexdeucher at
Sat Nov 25 18:53:25 PST 2006

On 11/24/06, Henrik Lundberg <henrik at> wrote:
> On Fri, 2006-11-24 at 00:35 -0500, Alex Deucher wrote:
> > The vesa driver is not accelerated as vesa does not provide any
> > interface for acceleration.  Basically vesa just provides a generic
> > bios interface for setting modes.  MMIO access to the FB is slow.
> > That is the limiting factor in performance.
> >
> > Alex
> I used vesa with xorg 7.0 before installing 7.1 and the operations I
> described earlier performed quiet well. Was there acceleration available
> back then? I'm confused...

No, vesa has never supported acceleration and as the spec stands now,
never will.  Are you sure you were using vesa before?  Do you have a
log anyway from your old setup or any x11perf results?


> I'm using Debian testing on arch AMD64. Maybe it matters?
> Best regards
> /Henrik

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