Is anyone dual-booting both an older & newer Ubuntu version on a machine with nVidia graphics?

[Petter Adsen]

On Sun, 19 Nov 2023 13:56:03 -0500
Little Girl <littlergirl at gmail.com> wrote:

> Hey there,
> 
> Liam Proven wrote:
> >Little Girl wrote:  
> >>
> >> Are either of these of any use?  
> >
> >Sadly no.
> >  
> >> https://www.reddit.com/r/Ubuntu/comments/177b1ve/no_support_for_nvidia_graphics_cards_in_ubuntu/
> >>  
> >
> >You'll see I already commented there.  
> 
> My mistake. I was looking at content rather than authors.
> 
> >> https://forums.developer.nvidia.com/t/nvidia-535-86-05-unable-to-install-on-ubuntu-23-04/262011
> >>  
> >
> >I need driver version 390 and it's unsupported and doesn't work on
> >kernel 6.5.  
> 
> The suggestion by Error404 on this page might work:
> 
> https://askubuntu.com/questions/1392507/nvidia-driver-broken-on-update-unable-to-reinstall
> 
> But before you try that, you might want to try something I had to do
> recently. It occurs to me that I ran into a somewhat similar issue to
> yours after an update this past June. I wasn't able to boot
> afterward, but my symptoms were a bit different from yours.
> 
> The explanation that was given to me was that it's likely the initrd
> just didn't get updated for the latest kernel and that that can
> happen when the kernel and the drivers get updated together.
> 
> This is the first command that was recommended to me, but it didn't
> fix the issue:
> 
> 	sudo apt install --fix-broken
> 
> This command was then recommended, because it brings in the NVIDIA
> drivers and updates initramrd automatically:
> 
> 	sudo ubuntu-drivers install
> 
> That worked like a charm. It might work for you, too.

Or just update the initramfs, if you can get in:

sudo update-initramfs -k all -u

That might unfreak it.