# ArchLinux Upgrade Issues

## Error: key "ABCDE1282828181" could not be looked up remotely

Upgrade archlinux-keyring: `pacman -S archlinux-keyring`

## Unable to get past login window after upgrading

This is caused by Nvidia driver being upgraded

nvidia-dkms: `pacman -S nvidia-libgl`

## Failed to start load kernel modules after upgrade:

Possible causes:

- `broadcom-wl` module
- Solved by re-"makepkg" `broadcom-wl` from **AUR**
- Find error message in `systemctl status systemd-modules-load.service`