Hey there! Thanks for the bug report. Based on your upgrader logs, the
only thing sticking out to me is the `xorg_fix_proprietary.py` script
failing, which I've also seen here:
https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-
upgrader/+bug/2169251

However, I would not mark your bug as a duplicate of it. Since falling
back to 6.8.0-142 solves the issue, I'd suspect this is a kernel
regression for your AMD GPU.

I will mark this as a kernel bug for now.

All the best,
Simon

** Changed in: ubuntu-release-upgrader (Ubuntu)
       Status: New => Won't Fix

** Also affects: linux (Ubuntu)
   Importance: Undecided
       Status: New

** Summary changed:

- Black screen on boot after upgrade  from 24.04 to 26.04
+ Linux 7.0 causes black screen on AMD Stoney Ridge APU

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https://bugs.launchpad.net/bugs/2170402

Title:
  Linux 7.0 causes black screen on AMD Stoney Ridge APU

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