Public bug reported:
I was running Ubuntu 20.04 on a B550 motherboard.
I believe the 2.5gb ethernet is actually only in newer kernels normally
but Ubuntu backport it.
It was working fine, then I received a kernel upgrade 5.4.0-53 and the
ethernet dissapeared.
If I use grub to boot into the old kernel 5.4.0-52 the ethernet is there
still so it appears to be the newer kernel.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Incomplete
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https://bugs.launchpad.net/bugs/1904102
Title:
Upgrade from 5.4.0-52 to 5.4.0-53 lost 2.5gbe ethernet on B550 board
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