Failed to start Load Kernel Modules / GRUB restore

[dm-on]

Hi @vbakalis I had a similar problem Booting “Module ‘nvidia” is not found” and lightdm issues

Did you run mhwd -li on your live-boot or after you manjaro-chrooted into your actual system? It looks to me like it was run from the live-boot, which doesn’t help.

@vbakalis

1. rm /var/lib/mhwd/local/pci/*
   …
   and i am trying to understand if i have to delete all installed gpu related files from this output:

I think both these are bad ideas, I learned that you can achieve the same, but in a cleaner way, with mhwd -r pci <driver-name> as was pointed out here to me.
In that situation I had to install those drivers again using mhwd -a pci <driver-name> and then delete them properly with the above command.
mhwd -l gives you a list of compatible possible drivers I believe. mhwd -li -d gives detail information about currently installed ones. All of this and more is also explained in the link @megavolt provided above.

@vbakalis

sudo mount /dev/sda3 /mnt ( now i can access my old filesystem under /mnt )

Is that enough to manjaro-chroot into your broken installation, or do you have any problems doing so? Can’t you also just boot normally and once you see the [FAILED] Failed to start Load Kernel Modules open the tty (Ctrl+Alt+F3) and do the changes from there?