From: "Laszlo Ersek" <lersek@redhat.com>
To: Hou Qiming <hqm03ster@gmail.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>,
valerij zaporogeci <vlrzprgts@gmail.com>,
discuss@edk2.groups.io,
"Marcel Apfelbaum (GMail address)" <marcel.apfelbaum@gmail.com>,
edk2-devel-groups-io <devel@edk2.groups.io>,
qemu devel list <qemu-devel@nongnu.org>
Subject: Re: [edk2-discuss] Load Option passing. Either bugs or my confusion.
Date: Wed, 22 Apr 2020 18:05:06 +0200 [thread overview]
Message-ID: <de03e16a-df14-c18b-31a0-ec025e7b2b65@redhat.com> (raw)
In-Reply-To: <CABSdmrm2qp=nMdu7N7kxxS9PVA25_pfnK_F3EimLuq8twPKjgg@mail.gmail.com>
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
next prev parent reply other threads:[~2020-04-22 16:05 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <18709.1586743215734342129@groups.io>
[not found] ` <11181.1586825080096843656@groups.io>
2020-04-14 14:26 ` [edk2-discuss] Load Option passing. Either bugs or my confusion Laszlo Ersek
[not found] ` <5211.1586899245384995995@groups.io>
2020-04-15 15:05 ` Laszlo Ersek
2020-04-16 4:38 ` Hou Qiming
2020-04-16 14:12 ` Laszlo Ersek
2020-04-17 3:22 ` Hou Qiming
2020-04-20 9:32 ` Laszlo Ersek
2020-04-20 14:19 ` Gerd Hoffmann
2020-04-20 14:13 ` Gerd Hoffmann
2020-04-21 13:02 ` Laszlo Ersek
2020-04-22 7:42 ` Hou Qiming
2020-04-22 16:05 ` Laszlo Ersek [this message]
2020-04-23 3:15 ` Hou Qiming
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