Manjaro not booting after system upgrade

I recently upgraded most aspects of my system, including moving to a new cpu and motherboard (AMD FX-8320 on AM3+ to Ryzen 7 5700X on AM4, new mobo: MSI B550-A Pro) and installing additional drives (NVMe-SSD, currently empty, plus new Blu-Ray drive, removing two old IDE optical drives). Now Manjaro no longer boots. Grub boots fine in CMS-Mode and so does Windows (including from Grub), but choosing Manjaro just gives me a black screen with no useful information.
I already tried chmod-manjaro and update-grub from a live stick, but it didn’t help. I think I’m out of my depth here.

You likely need to change driver config and more.
One place to start may be:


You need to boot either with

  1. fallback initrd
  2. chroot into the system and rebuild initrd

you need with USB live iso manjaro ,

  • do a chroot
  • rebuild img
  • restore Grub entry

check this point before

For UEFi and /boot/efi

sudo manjaro-chroot -a
efibootmgr -v
grub-install --target=x86_64-efi --efi-directory=/boot/efi --bootloader-id=manjaro --recheck    ( for UEFI + /boot/efi)
grub-mkconfig -o /boot/grub/grub.cfg 
mkinitcpio -P
efibootmgr -v

Thanks, I checked through your guides an apparantly my problem is not Grub issue at all and rather a graphics driver issue. I also upgrade from an GCN-GPU to an RDNA2-GPU and it seems my system stubbornly tries to use the old ati drivers instead of amdgpu. Typing startx I get (EE) Fatal server error:(EE) no screens found. I have some trouble solving this though. The stuff I find by search all either seem to deal NVIDEA stuff or are don’t really seem to fit my case.