Merge pull request #225 from claydoh/patch-1

Update post-install.md to add Debian/Ubuntu instructions for USB-C fixes

src/docs/installing/post-install.md

@@ -36,7 +36,9 @@ Install [Chrultrabook Tools](https://github.com/death7654/Chrultrabook-Tools/rel
 
 ### Fixing USB C on TigerLake and AlderLake
 
-Distros that use dracut for initramfs, such as Fedora, have an issue which prevents the `cros_ec_typec` kernel driver from loading correctly. You can fix it with the following steps.
+Fedora, Debian, and Ubuntu have an issue which prevents the `cros_ec_typec` kernel driver from loading correctly. You can fix it with the following steps:
+
+#### Fedora
 
 1. Create a file called `chromebook_typec.conf` file in `/etc/dracut.conf.d/`
 2. Paste the following contents into the file:
@@ -47,6 +49,18 @@ Distros that use dracut for initramfs, such as Fedora, have an issue which preve
 
 3. Rebuild your initramfs with `sudo dracut --force`.
 
+#### Debian and Ubuntu
+
+1. Open the file /etc/initramfs-tools/modules 
+2. Paste the follwing contents to the end of the file:
+
+   ```txt
+   cros-ec-typec
+   intel-pmc-mux
+   ```
+
+3. Rebuild your initramfs with `sudo update-initramfs -u -k all`.
+
 ### CELES Post Install Workaround Possible (Linux)
 
 If you experience issues in applications such as Parsec, or encounter disruptive freezes, adding the kernel parameters `clocksource=hpet hpet=force` may fix your problem. The following instructions assume you are using GRUB, and will be different for other bootloaders. Do your own research on how to set kernel parameters in your bootloader if these do not apply.