Installer goes no-signal-ly after GUI loads most commonly

[Eggmanplant]

macOS Version

15 and 14

What is your CPU's model?

AMD Ryzen 5 3600

What is your GPU's model?

AMD Radeon RX 6600

Please describe the behaviour in detail.

Read the title. Managed to get it past 2 times out of e.g., 30. Can't install because my network something isn't supported. Can't power off using button.

Not a NootRX issue, but I don't know what's the general bugs repo. This seems most relevant for supposed fixes. Doesn't work with NootRX or WhateverGreen, too.

What should've happened instead?

It works every time.

If applicable, attach the .gpuRestart, .panic, etc file related to this issue.

Can't get it.

[Eggmanplant]

I got a chance. The PC booted. I installed macOS. The OS itself boots always.