15

Introduction

This page should give some information you need about running Ubuntu on a Dell XPS 15 L502x laptop (the ones with sandy bridge cpu's).

For the L521X, see this page: https://wiki.ubuntu.com/HardwareSupport/Machines/Laptops/Dell/XPS/L521X

Installation gotcha's

  • USB installation: booting from the USB3 slots won't work. Use the e-SATA slot instead!

Hardware Support Matrix

HARDWARE

UBUNTU RELEASE

STATUS

Keyboard

Natty (11.04)

Works

Oneiric (11.10)

Works

Precise (12.04)

Works Except Fn+F1

Screen

Natty (11.04)

Works

-

Oneiric (11.10)

Works

Precise (12.04)

Works

Wireless ethernet

Natty (11.04)

Works

Oneiric (11.10)

Works

Precise (12.04)

Works

Trackpad

Natty (11.04)

Works

Oneiric (11.10)

Works

Precise (12.04)

Works

Wired ethernet

Natty (11.04)

Works

Oneiric (11.10)

Works

Precise (12.04)

Works

Sound

Natty (11.04)

Works

Oneiric (11.10)

Works

Optimus

Natty (11.04)

Works with manual changes

Oneiric (11.10)

Works with Bumblebee 3.0

Precise (12.04)

Works with Bumblebee 3.0

9-in-1 card reader

Natty (11.04) & Oneiric (11.10)

Works with manual changes

Precise (12.04)

Not tested yet

Webcam

Natty (11.04)

Works

Oneiric (11.10)

Works

Precise (12.04)

Works

Ntrig Multitouch screen

Natty (11.04)

Works with manual changes

Precise (12.04)

Not tested yet

HDMI

Natty (11.04)

?

Oneiric (11.10)

Does not Work

Precise (12.04)

Does not Work

Sound Device

Natty (11.04)

Works

Oneiric (11.10)

Works with a minor bug

Precise (12.04)

Works with a minor bug

Mini DisplayPort

Natty (11.04)

?

Oneiric (11.10)

Works (2560X1600 mDP)

Precise (12.04)

Works (1920X1080 mDP)

USB 3

Natty (11.04)

?

Oneiric (11.10)

Works

Precise (12.04)

Works

Hardware

Optimus / Graphics cards

Switch off NVIDIA card

# echo OFF > /sys/kernel/debug/vgaswitcheroo/switch

Switch on NVIDIA card

# echo ON > /sys/kernel/debug/vgaswitcheroo/switch

Using the following command before and after the switch, you should see a drop/rise in mW being used:

# grep rate /proc/acpi/battery/BAT0/state

You can also completely disable the NVIDIA card and only use the Intel onboard graphics card ( which has more than enough performance for day-to-day work:

# echo "blacklist nouveau" > /etc/modprobe.d/blacklist-nvidia.conf

# update-initramfs -c -k all

# reboot

If you prefer there is the bumblebee project that is currently supporting the optimus devices, especially the xps 15.

Here you can find Bumblebee:

https://launchpad.net/~mj-casalogic/+archive/bumblebee/ or even better: https://github.com/Bumblebee-Project/Bumblebee

Bumblebee allows to run applications with nvidia card:

optirun application

If you want to tweak nvidia propietary driver run

optirun nvidia-settings -c :8 (Bumblebee default screen is 8)

9-in-1 card reader

In 11.10, to enable insert the card and run:

# echo 1 > /sys/bus/pci/rescan

keep informed about this bug: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/703180

Trackpad

Full multi-gesture (2 points) trackpad usage work at this moment.

Top right keys

The special touch keys are strangely mapped by default. One changes brightness, one does next track. They seem to be linked to the same key sequences as the Fn+F# keys that do the same job. To fix this, create the keymap file as /lib/udev/keymaps/dell-xps-l502x:

0x85 prog1 # Second touch key
0x84 media # Third touch key

you can test it works with:

/usr/lib/udev/keymap input/event4 /lib/udev/keymaps/dell-xps-l502x

Note that "input/event4" comes from executing:

sudo /lib/udev/findkeyboards

To add this rule permanently add in /etc/udev/rules.d/99-l502x-keys.rules :

# Keymap Dell Touch keys
SUBSYSTEM=="input", KERNEL=="event4", RUN+="keymap $name dell-xps-l502x"

https://help.ubuntu.com/community/HybridGraphics

https://wiki.archlinux.org/index.php/Dell_XPS_15

Trackpad

http://comments.gmane.org/gmane.linux.kernel/1108661

Information on Bumblebee (for graphics card Optimus support)

https://github.com/Bumblebee-Project/Bumblebee

IronHide Optimus Support Project

https://github.com/MrMEEE/ironhide

Dell XPS 15 L502X running Ubuntu Blogs

http://hanynowsky.wordpress.com/2012/04/07/dell-xps-15-l502x-ubuntu-linux/

HardwareSupport/Machines/Laptops/Dell/XPS/15 (last edited 2013-12-05 02:19:41 by luke32j)