reinstalling Nvida driver after upgrade to 21.04

Sat May 15 12:34:26 UTC 2021

Hi,
After the upgrade to 21.04, I noticed that the upgrade changed the Nvidia driver from the by me used 340 version to the latest 460 version.
I tried installing the 390 version without success. So I tried reinstalling the 460 version that is recommended by "ubuntu-drivers devices".
I tried a "sudo apt-get -f install nvidia-driver-460" but some packages have unmet dependencies and that I shoud do a "apt --fix-broken install". Tried that, but "dpkg-divert : error mismatch on package".
How do I get out of this mismatch and unmet dependencies ?
Thanks.
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