I’ve found that as well with some files. At first I thought the issue was with the jellyfin instance had not enough capabilities, but after trying the same file with its subtitles, it worked on any other client: flatpak, web, and regular android. So for me it is the chromecast/androidtv device, so I am now looking what to replace it with

Go figure

What are you reinstalling? New haos on old kvm? Old haos on new kvm? New deployment?

From the logs I read that your user chris has no rw perms within the haos.

I somehow missed this to be a flatpak via Discover. Granted this may not be usual in distros with a traditional update model, downgrading packages may be present in rolling distros, or distros with overlapping minor versions, or having 3rd party repos providing conflicting packages to those of the distro.

I offer my system as example:

The following product is going to be upgraded:
  openSUSE Tumbleweed  20240211-0 -> 20240313-0

The following 14 packages are going to be downgraded:
  ghc-binary ghc-containers ghc-deepseq ghc-directory ghc-exceptions ghc-mtl ghc-parsec ghc-pretty ghc-process ghc-stm ghc-template-haskell ghc-text ghc-time ghc-transformers

It is called “downgrading”, and it is not uncommon to have some packages downgrading when updating/upgrading a system, due to several reasons.

That is why I also mentioned the latch/sensor, it may got stuck.

It sounds like the issue is with the lid latch/sensor, not with the graphics. Some laptops may not boot if the lid is closed, and some have options on the firmware to enable to boot when the lid is closed / on a docking station.

So no one told you life was gonna be this way

Yes. Don’t.

With vbox I don’t think you can do that, nor with any other hypervisor delivering full virtualization. You could try with a paravirtualization, like Xen, and see if you can trick the OS

Note that I don’t know if windows is supported as a paravirtualized guest.

So you "self"host elsewhere?