Setting up the Lenovo Thinkpad X1 Carbon Extreme (gen2) for usage with Linux

Lenovo Thinkpad X1 Carbon Extreme (gen2).md5

These are my findings of helpful changes to make to Linux (I use Manjaro) to get the most out of this laptop,


# Kernel Modules

install acpi_call:

```
sudo pacman -S linux54-acpi_call
```

Where `linux54` is your current kernel version.

Make sure the proper modules are enabled:

```
$ sudo vim /etc/mkinitcpio.conf

# change MODULES="" to:

MODULES=(battery acpi_call)
```

# ACPI_OSI

I've found enableing this to be helping in power management:
http://iam.tj/prototype/enhancements/acpi_osi.sh

It's easy to enable by using `grub-customizer`

```
$ sudo pacman -S grub-customizer
```

Start it and edit your first menu item. You will see a line similar to this:

```
linux	/boot/vmlinuz-5.4-x86_64
```

Make sure to add `acpi_osi=! "acpi_osi=Windows 2015"`

Your line will now look like this (mind the space bewtween settings):

```
linux	/boot/vmlinuz-5.4-x86_64 root=UID_CODE_HERE rw  quiet cryptdevice=IF_YOU_HAVE_CRYPT root=/dev/mapper/luks-406  acpi_osi=! "acpi_osi=Windows 2015"
```

# TLP and power management

I have disabled cpupower and use `tlp-gui` to set power management.

```
$ sudo systemctl disable cpupower
$ sudo pacman -S tlp tlpui
```

Set the processor to the following:

```
CPU_SCALING_GOVERNOR_ON_AC = ondemand
CPU_SCALING_GOVERNOR_ON_BAT = ondemand
```

Set the Thinkpad battery to:

```
START_CHARGE_THRESH_BAT0 = 85
STOP_CHARGE_THRESH_BAT0 = 90
```
See https://support.lenovo.com/nl/en/solutions/ht078208 for possible best practices.

# Powertop

Install powertop for some tuning:

```
$ sudo pacman -S powertop  
``

run powertop as root and navigate to tunables and make sure `bad` is `good` by selecting and pressing enter.

Go to wakeup and disable wake-on-lan`