915resolution on an i810

[Grant]

> > > > I'm getting the following when trying to run '915resolution -l' with
> > > > my i810 onboard video:
> > > >
> > > > system1 ~ # 915resolution -l
> > > > Intel 800/900 Series VBIOS Hack : version 0.5.2
> > > > Intel chipset detected.  However, 915resolution was unable to
> > > > determine the chipset type.
> > > > Chipset Id: 71248086
> > > > Please report this problem to stomljen at yahoo.com
> > > >
> > > > Is there anything I can do?  Could 915resolution work anyway?
> > >
> > > The i810 uses direct/native modesetting already, and so i915resolution
> > > won't do anything useful there.  Assuming you really do have an i810.
> > >
> > > Keith
> >
> > Are you sure?  I spent this morning in a conversation on this list
> > about how the i810 has its modes defined in BIOS and 915resolution is
> > necessary to define your own.
>
> Grant,
>
> Going back through the thread shows that Keith Packard jumped to the
> wrong conclusion for your original question, and I just followed up on
> Keith's response.
>
> So, getting back to the real problem. You have a real i810 chip which is
> the very old device which does program the video modes directly without
> the BIOS.
>
> Now, the driver has some code for interlaced modes, but I can also see
> it's disabled and any modes that are defined as interlaced are returned
> as BAD. Which is why the mode is actually being rejected.
>
> It's probably worth you checking out the git repository for the driver
> and see if you can remove the code in I810ValidMode() and get it to
> work.

I looked at the source for 1.6.5 and it says:

Interlace modes cannot be supported.

I guess I'm out of luck.  I wonder why at the interlacing code is in
there though.

- Grant