Xorg Tainted messages in syslog after/during boot

[Martin Visser]

Running Ubunt 14.04.3 on a Dell XPS 15 9550.

After booting (successfully BTW) I see a number of errors in syslog. I don't notice any errors which seem to indicate that something really is broken, but, and I don't know if it's related, on multiple occasions I had an issue during shutdown where the system only displays my background and nothing responds, not even for example Num Lock.

$lsb_release -rd
Description: Ubuntu 14.04.3 LTS
Release: 14.04

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.19.0-49-generic 3.19.0-49.55~14.04.1
ProcVersionSignature: Ubuntu 3.19.0-49.55~14.04.1-generic 3.19.8-ckt12
Uname: Linux 3.19.0-49-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
CurrentDesktop: Unity
Date: Fri Feb 5 12:36:15 2016
InstallationDate: Installed on 2016-02-02 (2 days ago)
InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
SourcePackage: linux-lts-vivid
UpgradeStatus: No upgrade log present (probably fresh install)

[Martin Visser (martinvisser)]

This only seems to happen while connected to an external monitor. It happens between every <1s and 2 minutes.

[penalvch (penalvch)]

Martin Visser, thank you for taking the time to report this bug and helping to make Ubuntu better. Please execute the following command only once, as it will automatically gather debugging information, in a terminal:
apport-collect 1542285

[Martin Visser (martinvisser)]

Christopher, as I am no longer the owner of the laptop I cannot run the command anymore.

[penalvch (penalvch)]

Martin Visser, this bug report is being closed due to your last comment https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1542285/comments/4 regarding you no longer have the hardware. For future reference you can manage the status of your own bugs by clicking on the current status in the yellow line and then choosing a new status in the revealed drop down box. You can learn more about bug statuses at https://wiki.ubuntu.com/Bugs/Status. Thank you again for taking the time to report this bug and helping to make Ubuntu better. Please submit any future bugs you may find.