[Bug 1843151] Re: Regression: QEMU 4.1.0 qxl and KMS resoluiton only 4x10

[Dr. David Alan Gilbert]

Hi James,
  The change in QEMU in 4.1 is that it's using a newer spice interface;  Freddy 
is on our spice team and we chatted about whether to change QEMU but they 
thought it best to fix Spice to be more tolerant; so I'm happy to go with that 
recommendation.

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Title:
  Regression: QEMU 4.1.0 qxl and KMS resoluiton only 4x10

Status in QEMU:
  New

Bug description:
  Host is Arch Linux.  linux 5.2.13, qemu 4.1.0.  virt-viewer 8.0.

  Guest is Arch Linux Sept 2019 ISO.  linux 5.2.11.

  Have replicated this both on a system using amdgpu and one using
  integrated ASPEED graphics.

  Downgrading from 4.1.0 to 4.0.0 works as usual, see:
  https://www.youtube.com/watch?v=NyMdcYwOCvY

  Going back to 4.1.0 reproduces, see:
  https://www.youtube.com/watch?v=H3nGG2Mk6i0

  4.1.0 displays fine until KMS kicks in.

  Using 4.1.0 with virtio-vga doesn't cause this.

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