Not as bad perhaps as some of your experiences, because I'm using nvidia GPU for M/L on a remote server and not for desktop display.

After update the nvidia driver is not loaded. Tried rebooting a couple of times since sometimes akmod seems to need this.

Manually loading the driver

modprobe nvidia

I get an error message that there is no driver in /lib/modules,...

Finally I manually run

depmod -a

Then reboot again.

Now nvidia driver is loaded and nvidia-smi reports success.

My question is:

Why did I need to manually run depmod -a?