[Bug 1923673] Re: Rewrite fkms overlay to kms overlay on upgrade of desktop pi image

[Dave Jones]

Hmm, config.txt is fairly wide ranging, dealing with things the user
generally shouldn't change (which kernel to boot, which initramfs to
load) to things they're very likely to change (whether the camera
firmware is enabled, overlays to load for things like the fan-shim).

Unfortunately the lines that may need altering may well be spread out
across the file so there's not necessarily an ideal location to place a
comment but I could certainly adjust things to output such a comment
prior to the first line changed and link to this bug.

I'll propose a merge in a bit with the suggestions.

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https://bugs.launchpad.net/bugs/1923673

Title:
  Rewrite fkms overlay to kms overlay on upgrade of desktop pi image

Status in ubuntu-release-upgrader package in Ubuntu:
  New

Bug description:
  With the switch to the Wayland desktop in hirsute, the gadget defining
  the boot partition of the desktop image for the Raspberry Pi was
  updated to use the KMS overlay ("full" KMS) instead of FKMS ("fake"
  KMS): https://github.com/snapcore/pi-
  gadget/commit/5c701c62e9502999a4af3ba0f071bf3b764e1b30

  In addition, the camera firmware was disabled with a comment as there
  may be incompatibilities with it at this time. However, users
  upgrading from groovy may still have such entries in their boot
  configuration. We should deal with this by adding an appropriate
  "quirk" to the release upgrader.

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