---
title: Latitude E6400
x-toc-enable: true
...

<div class="specs">
<center>
Dell Latitude E6400
</center>

| ***Specifications***       |                                                |
|----------------------------|------------------------------------------------|
| **Manufacturer**           | Dell                                           |
| **Name**                   | Latitude E6400                                 |
| **Released**               | 2009                                           |
| **Chipset**                | Intel Cantiga GM45                             |
| **CPU**                    | Intel Core 2 Duo (Penryn family). A Quad-core 
                        mod exists, replacing the Core 2 Duo with a Core Quad |
| **Graphics**               | Intel GMA 4500MHD (and NVidia Quadro NVS 160M 
                                                         on some models) |
| **Display**                | 1280x800/1440x900 TFT                          |
| **Memory**                 | 2 or 4GB (Upgradable to 8GB)                   |
| **Architecture**           | x86_64                                         |
| **EC**                     | SMSC MEC5035 with proprietary firmware         |
| **Original boot firmware** | Dell BIOS                                      |
| **Intel ME/AMD PSP**       | Present. Can be completely disabled.           |
| **Flash chip**             | SOIC-8 4MiB or 2MiB+4MiB (Upgradable to 16MiB) |


```
W+: Works without blobs; 
N: Doesn't work; 
W*: Works with blobs; 
U: Untested; 
P+: Partially works; 
P*: Partially works with blobs
```

| ***Features***                                    |    |
|---------------------------------------------------|----|
| **Internal flashing with original boot firmware** | W+ |
| **Display**                                       | W+ |
| **Audio**                                         | W+ |
| **RAM Init**                                      | W+ |
| **External output**                               | W+ |
| **Display brightness**                            | P+ | 

| ***Payloads supported***  |           |
|---------------------------|-----------|
| **GRUB**                  | Not yet     |
| **SeaBIOS**               | Works     |
| **SeaBIOS with GRUB**     | Not yet     |
</div>
Introduction
============

**To install Libreboot, see: [E6400 installation
instructions](../install/e6400.md)**

ROM images for Dell Latitude E6400 will be available in the next Libreboot
release after 20230413, or you can compile a ROM image for installation via
lbmk, see: [build instructions](../build/)

We believe all models with iGPU are GM45 and will work perfectly. We suspect
that the dGPU models are PM45 and won't work yet, because Libreboot currently
supports just the iGPU (Intel graphics) on these machines.

There are two possible flash chip sizes for the E6400: 4MiB (32Mbit) or
2+4MiB (64Mbit). Libreboot presently supports the 4MiB version, and provides
8MiB images for those who upgrade their flash to 8MiB or 16MiB.

Most people will want to use the 4MiB images.

SeaBIOS-only
------------

At the time of publishing this port, keyboard initialisation is
broken in the GRUB payload (it *works fine* in BIOS GRUB, loaded
from SeaBIOS, but not *coreboot* GRUB provided by Libreboot - see
build targets `i386-coreboot` and `i386-pc` in GRUB).

This is being investigated. For the time being, SeaBIOS payload works
very well and it is provided by Libreboot.

Blob-free setup (no-ME possible)
---------------

This is a GM45/PM45 platform, so completely libre initialisation in
coreboot is possible, provided by default in Libreboot.

Management Engine (ME) firmware removed
-------------------------

This port in Libreboot makes use of `ich9gen` from ich9utils, which
you can read about in the [ich9utils manual](../install/ich9utils.md) - this
creates a no-ME setup. The Intel Management Engine firmware (ME) is completely
removed, and the ME disabled, just like on ThinkPad X200, T400 and so on.

*The E6400 laptops may come with the ME (and sometimes AMT in addition) before
flashing libreboot. Dell also sold configurations with the ME completely
disabled, identifiable by a yellow sticker reading "3 ME Disabled" inside the
bottom panel. This config sets the MeDisable bit in the IFD and sets the ME
region almost entirely to 1's, with the occasional 32-bit value (likely not
executable). libreboot disables and removes it by using a modified descriptor:
see [../install/ich9utils.md](../install/ich9utils.md)*
(contains notes, plus instructions)