Remover os avisos de erro ao desligar o Arch Linux

Ae galera do Arch Linux,
conhece o problema abaixo, que ocorre na hora de desligar o sistema?

shutdown[1783]: Failed to remount '/oldroot/sys/fs/cgroup/devices' read-only: Device or resource busy
shutdown[1]: Failed to wait for process: Protocol error
shutdown[1796]: Failed to remount '/oldroot/sys/fs/cgroup/pids' read-only: Device or resource busy
shutdown[1]: Failed to wait for process: Protocol error
shutdown[1801]: Failed to remount '/oldroot/sys/fs/cgroup/systemd' read-only: Device or resource busy
shutdown[1]: Failed to wait for process: Protocol error

Muito bem. Para resolvê-lo siga esses passos:

1. Logue-se como root

2. Edite o arquivo /etc/mkinitcpio.conf

3. Procure pela parte que possui os HOOKS e adicione "shutdown"

De:

HOOKS=(base udev autodetect modconf block filesystems keyboard fsck)

Para:

HOOKS=(base udev autodetect modconf block filesystems keyboard fsck shutdown)

4. Salve o arquivo e rode o comando abaixo:

mkinitcpio -p linux

Se estiver utilizando o kernel LTS:

mkinitcpio -p linux-lts

5. Reinicie o sistema

Problema resolvido.

Abraços.