HP EliteBook 850 G3

UEFI / Secure Boot

Secure Boot and TPM backed disk encryption is tested and works. Enrolling custom keys for secure boot is supported but is not tested, proceed with caution.

AMD Graphics

The AMD Radeon R7 M365X is supported by both radeon and AMDGPU drivers, but AMDGPU driver performs better. Read AMDGPU to configure the driver in your system.

Fan Control

Fan control requires additional software to be configured. Install nbfc-linux^AUR read Fan speed control for more information.

Cellular

NetworkManager uses ModemManager for mobile broadband connection support.

Setting up usb_modeswitch does not set up the modem properly. Add the following udev rule & script to manually configure the modem to operational mode,

/etc/udev/rules.d/99-hp-modem.rules

ACTION=="add", ATTR{idVendor}=="03f0", ATTR{idProduct}=="9d1d", RUN+="/usr/local/bin/hp-modem-setup.sh"

/usr/local/bin/hp-modem-setup.sh

#!/bin/bash

echo 0 > /sys/bus/usb/devices/1-3/bConfigurationValue
echo 2 > /sys/bus/usb/devices/1-3/bConfigurationValue
echo 1 > /sys/bus/usb/devices/1-3/bConfigurationValue
echo 3 > /sys/bus/usb/devices/1-3/bConfigurationValue

Give executable permissions to the modem set up script, reload udev and trigger an usb even to set up the device:

# udevadm trigger --action=add /sys/bus/usb/devices/1-3

Confirm that the modem is set up by running:

$ mmcli -L

Touchpad

To enable synaptics intertouch on Synaptics TM3140-001 for a better touch pad experience:

# modprobe -r psmouse
# modprobe psmouse synaptics_intertouch=1

If all works well you can make the changes persistent in next boot by adding the driver parameter to Kernel parameters.

Keyboard Pointer

The keyboard nipple/pointer is tested and works, both the rows of touch-pad mouse click buttons works.

Battery

HP Intelligent charging is unsupported to change battery health configurations on the fly while powered on, but battery health configurations (Maximize for Duration/Health, Let HP Manage..) could be set from BIOS menu. Setting charging thresholds on the fly is also unsupported.

HP Docking

The docking port on the right side of the device below the sim card slot is and older docking standard that is now discontinued. To recognize whether the device is docked or not the path to the device can be found out by running:

$ find /sys/devices/platform -name dock -print -exec cat {} \;

A list of tested docks are listed,

HPFall (HP 3D DriveGaurd)

The laptop built to work with hard drives has an accelerometer to unload the drive head to prevent damage to the hard drive. If you have a harddrive the same feature is implemented by hpfall and is tested and works, follow the guide in hpfall to configure. The accelerometer can also be used for other purposes, values can be read using the jstest utility from the joyutils

$ jstest /dev/input/js0

NFC

The NFC device on the board is unsupported by the NFC software/firmware stack.

Fingerprint

The fingerprint device "Validity Sensors, Inc. VFS495 Fingerprint Reader" does not work, as the firmware is proprietary and it's functionality is obscure to be integrated to the linux pam components. There are reverse engineered drivers that work with older kernels and older versions of libcrypto and other dependencies but later versions of packages seems to break commonly linked resources.