Can't use `graphics=vnc` on TDVM

[pprincipeza]

[Bug] If a TDVM is created using libvirt, and it contains the VNC graphics setup as:

`

`

The VM itself crashes, and the following entries are seen in the logs:

2024-07-11T09:19:19.469114Z qemu-system-x86_64: Failed to get registers: Input/output error 2024-07-11 09:19:19.853+0000: shutting down, reason=crashed

[Repro Steps]

• Create a Noble (24.04) Host and Guest setup following the instructions in this Wiki.
• Create a VM with graphics type as vnc. Example here [0].
• Power the VM on.
• Check for the qemu logs to find the aforementioned messages.

[Expectation] VNC should not fail with TDX, unless there is a full statement outlining so.

[0] https://paste.ubuntu.com/p/7p3mVG8Qwy/

[syncronize-issues-to-jira[bot]]

Thank you for reporting us your feedback!

The internal ticket has been created: https://warthogs.atlassian.net/browse/PEK-1049.

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