diff --git a/right-fit-swap-for-laptop-hibernation-Ubuntu-20.04-full-ZFS-install.md b/right-fit-swap-for-laptop-hibernation-Ubuntu-20.04-full-ZFS-install.md
index b8e32fd..c67590b 100644
--- a/right-fit-swap-for-laptop-hibernation-Ubuntu-20.04-full-ZFS-install.md
+++ b/right-fit-swap-for-laptop-hibernation-Ubuntu-20.04-full-ZFS-install.md
@@ -1,5 +1,12 @@
 # right fit swap for laptop hibernation Ubuntu 20.04 full ZFS install
 
+## bios setup
+
+You have to disable secure boot in bios to permit Hibernate because of *kernel lockdown prevent hibernation* see links bellow :
+
+* [](https://unix.stackexchange.com/questions/591488/why-does-the-kernel-lockdown-prevent-hibernation)
+* [](https://rephlex.de/blog/2019/12/27/how-to-hibernate-and-resume-from-swap-file-in-ubuntu-20-04-using-full-disk-encryption/)
+
 ## create swap partition to permit Hibernate
 
 create a swap partition right sized for hibernation.
@@ -88,12 +95,12 @@ And add this value to it (The number represents seconds you want to pass in slee
 HibernateDelaySec=7200
 ~~~
 
-[](https://doc.ubuntu-fr.org/tutoriel/activer_hibernation)
+Modify this two lines in /etc/systemd/logind.conf for sleep key and closing the lid actions if that's how you want it:
 
-kernel lockdown prevent hibernation :
-
-[](https://unix.stackexchange.com/questions/591488/why-does-the-kernel-lockdown-prevent-hibernation)
-[](https://rephlex.de/blog/2019/12/27/how-to-hibernate-and-resume-from-swap-file-in-ubuntu-20-04-using-full-disk-encryption/)
+~~~
+HandleSuspendKey=suspend-then-hibernate
+HandleLidSwitch=suspend-then-hibernate
+~~~
 
 Hiberner au bout de x secondes après une mise en veille
 [](https://doc.ubuntu-fr.org/veille_et_hibernation)