nvidia 470-server driver no longer loads

On a DGX A100:

ubuntu@blanka:~$ cat /proc/version
Linux version 5.4.0-99-generic (buildd@lgw01-amd64-007) (gcc version 9.3.0 (Ubuntu 9.3.0-17ubuntu1~20.04)) #112-Ubuntu SMP Thu Feb 3 13:50:55 UTC 2022
ubuntu@blanka:~$ dpkg -l linux-modules-nvidia-470-server-5.4.0-99-generic | cat
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Architecture Description
+++-================================================-==============-============-================================================
ii linux-modules-nvidia-470-server-5.4.0-99-generic 5.4.0-99.112+1 amd64 Linux kernel nvidia modules for version 5.4.0-99

ubuntu@blanka:~$ sudo modprobe nvidia
modprobe: ERROR: could not insert 'nvidia': No such device
ubuntu@blanka:~$ sudo dmesg -c > /dev/null
ubuntu@blanka:~$ sudo modprobe nvidia
modprobe: ERROR: could not insert 'nvidia': No such device
ubuntu@blanka:~$ dmesg
[ 2553.525411] nvidia-nvlink: Nvlink Core is being initialized, major device number 510
[ 2553.526915] NVRM: No NVIDIA GPU found.
[ 2553.527196] nvidia-nvlink: Unregistered the Nvlink Core, major device number 510