15z

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Introduction

This page should give you all the information you need about running Ubuntu on a Dell XPS 15z laptop.

Installation gotcha's

  • Boot installer with acpi=off

  • 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)

?

Screen

Natty (11.04)

Works

External Screen (HDMI)

Natty (11.04)

?

Wireless ethernet

Natty (11.04)

Works

Trackpad

Natty (11.04)

Works with manual changes

Wired ethernet

Natty (11.04)

Works

Sound

Natty (11.04)

Works

Optimus

Natty (11.04)

Works with manual changes

9-in-1 card reader

Natty (11.04)

Does not work

Webcam

Natty (11.04)

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

Bumblebee

Bumblebee can be installed either from GIT or from the repositories at GitHub.

The enable/disable scripts can be taken from here.

Trackpad

Full multi-gesture trackpad usage does not work at this moment. It is however possible to get basic mouse functionality with the following command:

# sudo rmmod psmouse; sudo modprobe psmouse proto=imps

( Or use proto=bare or proto=exps ).

To make this persistent, add the following line to a file in /etc/modprobe.d/ (/etc/modprobe.d/options.conf could be an option, but modprobe parses all the files in that directory):

options psmouse proto=imps

Fix various glitches

Add pcie_aspm=force acpi=noirq i915.semaphores=1 to GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub.

Then run the following command:

# update-grub

And reboot. This fixes ACPI issues, lowers power consumption and 1-2 second regular freezes of your video card.

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

Trackpad

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

Information on Bumblebee (for graphics card Optimus support)

https://github.com/MrMEEE/bumblebee/issues/258

HardwareSupport/Machines/Laptops/Dell/XPS/15z (last edited 2014-06-24 09:25:38 by da6930p)