Re: [edk2-discuss] Load Option passing. Either bugs or my confusion.

[Hou Qiming <hqm03ster@gmail.com>]

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>
>
> > And when the user provides an EDID one should parse it and set the
> default
> > resolution to match it. But that's a less important feature.
>
> It's more complex than you might think, and (to me personally) it seems
> to require more time than its importance justifies.
>
> https://bugzilla.redhat.com/show_bug.cgi?id=1749250
>
>
Read the thread. Actually, I wrote some EDID parsing code a while ago, but
that's before QEMU supporting EDID so I had to do it outside QEMU and pass
my parsing result to ramfb as the now-removed starting_width /
starting_height. In the context QEMU, the EDID actually reflects the user
preference since the whole structure is usually made up from the
user-specified resolution. And I think most guest OSes initialize
first-time-seen monitors to their EDID resolution, which should have
motivated QEMU to provide an EDID for a virtual monitor.

But at this point it's kind of awkward to do the EDID / resolution handling
(that I need) in the ramfb driver as the kvmgt EDID has to be read out from
the i915 MMIO just like a physical GPU. Guess now my use case is better
covered with a fully functional i915 framebuffer driver for OVMF. If I had
the time...

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