Re: [Qemu-devel] [Bug 1658634] Re: Can't get correct display with latest QEMU and OVMF BIOS

[Kai Cong <1658634@bugs.launchpad.net>]

Splash screen and UEFI shell were displayed correctly. Grub2 menu and
Ubuntu login screen also appeared, however the display didn't seem right. I
got very blurry output.

[image: Inline image 1]

With QEMU 2.7.0 and the same OVMF.fd, everything works well.

Please let me know if anything is not clear.

Thanks,
Kai

On Mon, Jan 23, 2017 at 4:50 AM, Laszlo Ersek (Red Hat) <lersek@redhat.com>
wrote:

> (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.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1658634
>
> Title:
>   Can't get correct display with latest QEMU and OVMF BIOS
>
> Status in QEMU:
>   New
>
> Bug description:
>   I tried to install a Ubuntu 16.04.1 Desktop 64bits with latest QEMU and
> OVMF UEFI BIOS, however I can't get correct display output with default vga
> configuration (-vga std). However, qemu works with a couple of different
> configurations:
>   1. "-vga cirrus" + "-bios OVMF.fd": works
>   2. "-vga std" + non-UEFI bios: works
>
>   The same error with QEMU 2.8.0 release. Everything works well on
>   2.7.0/1.
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/qemu/+bug/1658634/+subscriptions
>


** Attachment added: "image.png"
   https://bugs.launchpad.net/bugs/1658634/+attachment/4808338/+files/image.png

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devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1658634

Title:
  Can't get correct display with latest QEMU and OVMF BIOS

Status in QEMU:
  New

Bug description:
  I tried to install a Ubuntu 16.04.1 Desktop 64bits with latest QEMU and OVMF UEFI BIOS, however I can't get correct display output with default vga configuration (-vga std). However, qemu works with a couple of different configurations:
  1. "-vga cirrus" + "-bios OVMF.fd": works
  2. "-vga std" + non-UEFI bios: works

  The same error with QEMU 2.8.0 release. Everything works well on
  2.7.0/1.

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1658634/+subscriptions