I am getting the same warning messages with the fully-updated 20.04.
<snipp>
W: Possible missing firmware /lib/firmware/amdgpu/arcturus_smc.bin for module am
dgpu
ryzen@cp7:~$ apt policy linux-firmware
linux-firmware:
Installed: 1.187
Candidate: 1.187
Version table:
*** 1.187 500
500 http://us.archive.ubuntu.com/ubuntu focal/main amd64 Packages
500 http://us.archive.ubuntu.com/ubuntu focal/main i386 Packages
100 /var/lib/dpkg/status
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https://bugs.launchpad.net/bugs/1850654
Title:
update-initramfs complains of missing amdgpu firmware files
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