# Dell Latitude E7470

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Reason: Stub (Discuss in Talk:Dell Latitude E7470#)

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

## Hardware Overview

Output of `lspci -nn`:

    00:00.0 Host bridge [0600]: Intel Corporation Skylake Host Bridge/DRAM Registers [8086:1904] (rev 08)
    00:02.0 VGA compatible controller [0300]: Intel Corporation HD Graphics 520 [8086:1916] (rev 07)
    00:04.0 Signal processing controller [1180]: Intel Corporation Skylake Processor Thermal Subsystem [8086:1903] (rev 08)
    00:14.0 USB controller [0c03]: Intel Corporation Sunrise Point-LP USB 3.0 xHCI Controller [8086:9d2f] (rev 21)
    00:14.2 Signal processing controller [1180]: Intel Corporation Sunrise Point-LP Thermal subsystem [8086:9d31] (rev 21)
    00:16.0 Communication controller [0780]: Intel Corporation Sunrise Point-LP CSME HECI #1 [8086:9d3a] (rev 21)
    00:16.3 Serial controller [0700]: Intel Corporation Device [8086:9d3d] (rev 21)
    00:17.0 RAID bus controller [0104]: Intel Corporation 82801 Mobile SATA Controller [RAID mode] [8086:282a] (rev 21)
    00:1c.0 PCI bridge [0604]: Intel Corporation Sunrise Point-LP PCI Express Root Port #5 [8086:9d14] (rev f1)
    00:1d.0 PCI bridge [0604]: Intel Corporation Device [8086:9d1a] (rev f1)
    00:1f.0 ISA bridge [0601]: Intel Corporation Sunrise Point-LP LPC Controller [8086:9d48] (rev 21)
    00:1f.2 Memory controller [0580]: Intel Corporation Sunrise Point-LP PMC [8086:9d21] (rev 21)
    00:1f.3 Audio device [0403]: Intel Corporation Sunrise Point-LP HD Audio [8086:9d70] (rev 21)
    00:1f.4 SMBus [0c05]: Intel Corporation Sunrise Point-LP SMBus [8086:9d23] (rev 21)
    00:1f.6 Ethernet controller [0200]: Intel Corporation Ethernet Connection I219-LM [8086:156f] (rev 21)
    01:00.0 Network controller [0280]: Intel Corporation Wireless 8260 [8086:24f3] (rev 3a)
    02:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS525A PCI Express Card Reader [10ec:525a] (rev 01)

Output of `lsusb`:

    Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
    Bus 001 Device 004: ID 8087:0a2b Intel Corp.
    Bus 001 Device 003: ID 0a5c:5834 Broadcom Corp.
    Bus 001 Device 002: ID 1bcf:28b8 Sunplus Innovation Technology Inc.
    Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

## 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-efibootAUR.

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

The firmware can then boot ArchLinux 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 doesn't work

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

## What was not tested

- Mini DisplayPort
- NFC

Category:

- Dell

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