Dell Latitude E7470

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The Dell Latitude E7470 is a 14" sexy business ultrabook released in the first quarter of 2016.

UEFI Boot Limitations and Workaround

Unfortunately the UEFI implementation does not properly forward the command line to the linux kernel when saved to the NVRAM. The simplest workaround is to build and install arch-efiboot^AUR.

This creates a binary blob whenever the kernel is updated consisting of: efistub + kernel + initrd + microcode + commandline.

The firmware can then boot Arch Linux from UEFI with a boot entry pointing to the created blob instead of the vmlinuz-linux kernel image.

What works

Almost everything works:

Video: Intel HD 520
Audio: Intel HD Audio with ALSA
Ethernet
Wireless: Intel 8260
Bluetooth
Suspend to RAM
Keyboard, touchpad and pointing stick
Keyboard backlight control
Screen backlight control
Fn-lock
HDMI output
Webcam (only 480p)
SmartCard reader
UEFI BIOS update with fwupd
Suspend to Disk

What does not work

Fingerprint reader (tracked at https://gitlab.freedesktop.org/libfprint/libfprint/issues/88)

What was not tested

Mini DisplayPort
NFC