diff --git a/linux/working_with_devices.md b/linux/working_with_devices.md
index 64071ea..4547d95 100644
--- a/linux/working_with_devices.md
+++ b/linux/working_with_devices.md
@@ -5,7 +5,9 @@ lspci -k | grep -EA3 'VGA|3D|Display'
 
 nvidia-settings --version
 
-hostnamectl
+- hostnamectl - ubuntu verions
 
 ubuntu-drivers devices
-sudo ubuntu-drivers autoinstall
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+sudo ubuntu-drivers autoinstall
+
+see https://linuxconfig.org/how-to-install-the-nvidia-drivers-on-ubuntu-20-04-focal-fossa-linux
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