(1) What phase of the guest do you get invalid video output in? Do you see the TianoCore splash screen? Does the grub2 menu appear?
(2) I cannot reproduce the issue (with a different guest OS anyway); I just tried QEMU (at d1c82f7cc344) and OVMF (built from edk2 at 7cf59c854f35), with stdvga; this combo works fine.
(3) Can you bisect QEMU from 2.7 through 2.8, using the same OVMF binary?
(4) Side point: please *never* use "-bios OVMF.fd"; use two pflash chips instead. Libvirt (strongly recommended) will do this for you.
(1) What phase of the guest do you get invalid video output in? Do you see the TianoCore splash screen? Does the grub2 menu appear?
(2) I cannot reproduce the issue (with a different guest OS anyway); I just tried QEMU (at d1c82f7cc344) and OVMF (built from edk2 at 7cf59c854f35), with stdvga; this combo works fine.
(3) Can you bisect QEMU from 2.7 through 2.8, using the same OVMF binary?
(4) Side point: please *never* use "-bios OVMF.fd"; use two pflash chips instead. Libvirt (strongly recommended) will do this for you.
Thanks.