Video support in UEFI mode

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https://bbs.archlinux.org – Unfortunately, I did not save the Xorg.0.log of fglrx. So I only wrote what I remember because I had to reinstall the xf86-video-ati drivers to have X working.I have only one problem with Radeon/KMS/Xorg drivers in EFI and BIOS modes. When I go in full screen mode (Ctrl_Alt+f) with qemu(-kvm), I get a white/black screen flicking. I have to Control-Backspace-Delete and go back to console. Any modification to xorg.conf, drirc or anything fail. Without Xorg Radeon 3D acceleration or with Xorg fbdev driver, there is no problem. My Amd/Ati card is00:01.0 VGA compatible controller: Advanced Micro De (HowTos)