====== Habilitar hibernação no linux mint 19 ======

[[https://forums.linuxmint.com/viewtopic.php?t=284100|https://forums.linuxmint.com/viewtopic.php?t=284100]]

<code bash>
sudo swapoff -a
</code>


''SIZE=10'' -- como regra use o tamanho da RAM + 2GB. Se for 8GB use SIZE=10 


<code bash>
sudo dd if=/dev/zero of=/swapfile bs=1M count=$(($SIZE * 1024))  
sudo chmod 0600 /swapfile 
sudo mkswap /swapfile sudo sed -i '/swap/{s/^/#/}' /etc/fstab 
sudo tee -a /etc/fstab<<<"/swapfile none swap sw 0 0"
</code>

<code bash>
RESUME_PARAMS="resume=UUID=$(findmnt / -o UUID -n) resume_offset=$(sudo filefrag -v /swapfile|awk 'NR==4{gsub(/\./,"");print $4;}') "
</code>

<code bash>
if grep resume /etc/default/grub>/dev/null; then echo -e "\nERROR: Hibernation already configured. Remove the existing configuration from /etc/default/grub and add these parameters instead:\n$RESUME_PARAMS";else sudo sed -i "s/GRUB_CMDLINE_LINUX_DEFAULT=\"/GRUB_CMDLINE_LINUX_DEFAULT=\"$RESUME_PARAMS/" /etc/default/grub;fi
</code>

<code bash>
sudo update-grub
</code>

<code bash>
sudo tee /etc/polkit-1/localauthority/50-local.d/com.ubuntu.enable-hibernate.pkla <<'EOB'
[Enable hibernate]
Identity=unix-user:*
Action=org.freedesktop.login1.hibernate;org.freedesktop.login1.handle-hibernate-key;org.freedesktop.login1;org.freedesktop.login1.hibernate-multiple-sessions
ResultActive=yes
EOB
</code>

Reboot.
Ao reiniciar o botão dehibernar já deve estar disponível.

Teste para saber se está ok

<code bash>
busctl call org.freedesktop.login1 /org/freedesktop/login1 org.freedesktop.login1.Manager CanHibernate
</code>

tem de retornar "yes"

ou para hibernar em linha de comando

<code bash>
systemctl hibernate
</code>