Black screen after new update

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OK, so be not afraid.

  1. Boot into the Live ISO environment. (Which it seems you have done.)
    1.1. If you wish, open this page in a browser as reference.

  2. Open a terminal and chroot into your Manjaro installation:

manjaro-chroot -a

Be careful now: You are now working on your installation as root!

  1. Once in the chroot environment, uninstall the faulty kernel:
mhwd-kernel --remove linux59
  1. While you’re at it, you can just as well remove the nvidia drivers. To do so we must first identify the drivers installed. To do that run the following in the chroot environment:
sudo mhwd --listinstalled

You should get a result similar to this:

> Installed PCI configs:
--------------------------------------------------------------------------------
NAME               VERSION          FREEDRIVER           TYPE
--------------------------------------------------------------------------------
video-nvidia            2020.11.30               false            PCI

From the output we can clearly see that the nvidia driver that has to be uninstalled is video-nvidia, so to remove it run:

mhwd --remove video-nvidia
  1. Now reinstall the kernel for your system. I suggest kernel version 5.4 or 5.10 as they are LTS. To install version 5.10, run:
mhwd-kernel --install linux510
  1. Follow that by reinstalling the nvidia driver:
mhwd --install video-nvidia
  1. Hold your thumbs, cross your heart, say a little prayer to Brigid, and reboot.

Theoretically, it should be fine now. If not, I don’'t take responsibility. If it is, however, feel free to heap on the praise!

Note:
No, it’s not really an nvidia thing. it’s because the nvidia drivers want to use kernel 5.9, which has been EOL for some time now, so the ATI GPU won’t help. I think.

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