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| From: | Laszlo Ersek |
| Subject: | Re: [edk2-discuss] Load Option passing. Either bugs or my confusion. |
| Date: | Wed, 22 Apr 2020 18:05:06 +0200 |
| User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 |
On 04/22/20 09:42, Hou Qiming wrote:
> A little off topic thing: isn't the default resolution supposed to be
> 1024x768?
No.
> This is the Microsoft regulation which all my physical devices
> seem to follow:
>
> https://docs.microsoft.com/en-us/windows-hardware/test/hlk/testref/6afc8979-df62-4d86-8f6a-99f05bbdc7f3
Key term being "Microsoft regulation".
The UEFI spec requires discrete ("plug-in") graphics devices to support
at least either 800x600x32 or 640x480x32.
And the edk2 (not just OVMF) default for the console resolution is
800x600. (See PcdVideoHorizontalResolution and
PcdVideoVerticalResolution in "MdeModulePkg/MdeModulePkg.dec".)
> 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
Laszlo
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