I can confirm that a clean install on a newly formatted device on a box (which was affected by this problem) runs fine now.
The used box is an older intel i7-2600 CPU (8 cores) with an also older Radeon R9 285/380. The amdgpu module _is_ loaded as lsmod shows, but the installation itself and the update to 5.4.0-29-generic by the installer runs without any error by update-initramfs -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1873325 Title: update-initramfs complains of missing amdgpu firmware files To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1873325/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs