How to make Arrandale GPU support more resolutions?

[1457384613gh]

Situations of Arrandale GPU

If Legacy boot, Arrandale GPU supports 1366x768, the same as resolution of screen, higher than 1024x768; If UEFI boot, Arrandale GPU supports 1024x768 at max, lower than resolution of screen, with graphical interface stretched horizontally.

Precedents with Solutions

In order to avoid graphical interface stretched horizontally, teams of CloverBootloader have developed CsmVideoDxe.efi and teams of OpenCore have developed BiosVideo.efi, used to make Arrandale GPU loaded in the way of being loaded by CSM or Legacy Mode ,under UEFI_Mode, so graphical interface of UEFI can use higher resolutions from CSM or Legacy Mode, such as 1366x768, the same as resolution of screen, higher than 1024x768. https://github.com/CloverHackyColor/CloverBootloader/tree/master/CloverEFI/BiosVideo https://github.com/acidanthera/OpenCorePkg/tree/master/Legacy/BootPlatform/BiosVideo

Hope and Ask

Hope

• I would like so do UEFI Grub2 and rEFInd. However, UEFI Grub2 and rEFInd cannot load CsmVideoDxe.efi or BiosVideo.efi.

  Ask

• Is there a Generic EFI Video Driver to make all bootloader x64 to achieve that? At least, supports to make UEFI Grub2 and rEFInd use higher resolutions from CSM or Legacy Mode, such as 1366x768, the same as resolution of screen, higher than 1024x768.
• Is there any other way to achieve that?

Information around Arrandale GPU

Originally posted by @1457384613gh in https://github.com/tianocore/edk2/discussions/4140

[lersek]

This issue may be valid/live, but you're clearly not going to get answers here. The edk2-discuss mailing list is potentially a better place. Keyword being "potentially".