Dell XPS 13-L321X Ultrabook

Overview
This is an article about running Gentoo on an Dell XPS 13 Ultrabook.

Laptop Specifications
Hardware specs may vary. These are the specs for the model XPS 13 Ultrabook:


 * Intel Core i5-2467M 1.6GHz to 2.3GHz or i7-2637M 1.7GHz to 2.9GHz, 3MB cache
 * 3GB DDR2 RAM (2 slots)
 * Intel HD Graphics 3000 (on-CPU)
 * High Definition Audio with Waves MaxxAudio 4
 * 11.6in TFT LCD Screen (Widescreen), 1366x768 WXGA
 * Samsung PM830 SATA 3 128GB or 256GB mSATA SSD Hard Disk
 * 1x USB 2.0 ports and 1x USB 3.0 ports
 * mini-DisplayPort output
 * Intel Centrino Advanced-N 6230 802.11 a/g/n with Intel Smart Connect Technology + Bluetooth 3.0

Printout of lspci:

Printout of lsusb (builtin devices, no external devices connected):

Printout of lsmod (builtin devices, no external devices connected):

Information from :

Drives and Storage

 * Hard Drive controller works using ahci driver in the kernel.

Graphics Chip
There is an issue with screen brightness which cannot be adjustable. It is possible to workaround it by:

You can use the same command line to a /etc/local.d/blacklight.start start up script.

WLAN Card
You'll also need the firmware:

Webcam

 * Untested

Problems
http://www.dell.com/support/drivers/us/en/19/DriverDetails/DriverFileFormats?DriverId=C0VG5&FileId=2902722114&productCode=xps-13-l321x&urlProductCode=False
 * The fan was running too often and too early. A bios upgrade resolved the issue.
 * The TouchPad is a Cypress I2C and doesn't seem to have good opensource driver (I couldn't get the tap and multi-touch to work yet).