diff --git a/Archguide.md b/Archguide.md
index 5d9055b..1c549c0 100644
--- a/Archguide.md
+++ b/Archguide.md
@@ -2,7 +2,7 @@
 title: Arch Linux Install guide
 description: 
 published: true
-date: 2019-11-05T23:52:01.954Z
+date: 2019-11-05T23:55:19.047Z
 tags: 
 ---
 
@@ -198,14 +198,18 @@ Install `nvidia` and `nvidia-utils` as normal.
 These by default will hijack your screen and run everything with the NVIDIA card. The NVIDIA control panel allows you to turn the GPU off completely.
 
 > However, this doesn't really work on some laptops, which will just blackscreen or exhibit buggy behavior.
+> Plus, it drains the battery pretty much *instantly*. 
 {.is-warning}
 
 Install `bumblebee` so the integrated graphics have priority and activate its service: `systemctl enable bumblebeed`.
 
+You will need to add your user to the `bumblebee` group. Run `gpasswd -a yourusername bumblebee`.
+
 To run programs with the NVIDIA card, run `optirun program`. For Steam games, change their executable command line to `optirun %command%`. 
 
 Finally, to allow the card to turn off completely when unused, install `bbswitch`.
 > Even LESS laptops will like that. The workaround involves editing your kernel cmdline options to blacklist a little bit of Windows-specific BIOS code. 
+> Try adding `acpi_osi=! acpi_osi="Windows 2012"`. Try with 2009 or 2015 instead for 9xxm and 20xx series respectively if it doesn't work.
 {.is-danger}
 
 More information [can be found at the usual place](https://wiki.archlinux.org/index.php/NVIDIA_Optimus)