Background: I’ve been running Ubuntu for years (started at 16.04, now at 20.04), and been constantly fighting with NVIDA drivers which I need as I use CUDA. As recently as yesterday, my NVIDIA 460 drivers were working fine, and an apt upgrade broke them again: Ubuntu 20.4 update broke my Nvidia 460 driver config
What I want to achieve:
- Create a restore point of a kernel and its modules (eg nvidia drivers) I’m happy with
- Whenever NVIDIA drivers break (or something else breaks badly), restore it
What I already have:
- GRUB which seems to allow choosing specific kernels to boot from
Restore point containing kernel+modules: is it possible to create (if so how), or am I simply misunderstanding how kernels & modules are managed on linux (ie a kernel wouldn’t include the nvidia drivers) ?
Restoring from grub: It seems
/etc/grub.d/40_customis the file I want to modify as it’s designed specifically for custom menu entries. Do you confirm this is the intended way of booting custom kernels or should I be looking at another file?
#!/bin/sh exec tail -n +3 $0 # This file provides an easy way to add custom menu entries. Simply type the # menu entries you want to add after this comment. Be careful not to change # the 'exec tail' line above.