def4ec6dce39 ("e1000e: PCIm function state support") would be in
5.3-rc1 and above and was not backported. If you test the package from
experimental, is the issue gone? If you cherry-pick this commit on
top is the issue gone?
I tried installing the linux-image-5.3.0-trunk-amd64 package from experimental on buster but I still experiencing the same issue. -- Markus