Touchscreen stops working after upgrading to Utopic HWE stack

[Jared Dominguez]

The system is a Dell Precision M3800 Developer Edition, i.e. it has Ubuntu 14.04 factory installed. If I upgrade the kernel and Xorg to the Utopic HWE versions, the touchscreen doesn't work. *However*, if I suspend and resume, the touchscreen starts working again.

I noticed the touchscreen not working with just upgrading the kernel though didn't think of suspending/resuming to see if it came back. However, I do know that the touchscreen stops working when upgrading the kernel (3.13->3.16).

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.16.0-31-generic 3.16.0-31.41~14.04.1
ProcVersionSignature: Ubuntu 3.16.0-31.41~14.04.1-generic 3.16.7-ckt5
Uname: Linux 3.16.0-31-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.7
Architecture: amd64
CurrentDesktop: Unity
Date: Tue Mar 10 22:51:15 2015
DistributionChannelDescriptor:
 # This is a distribution channel descriptor
 # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
 canonical-oem-somerville-trusty-amd64-20140620-0
InstallationDate: Installed on 2015-02-12 (26 days ago)
InstallationMedia: Ubuntu 14.04 "Trusty" - Build amd64 LIVE Binary 20140620-04:25
SourcePackage: linux-lts-utopic
UpgradeStatus: No upgrade log present (probably fresh install)

[Jared Dominguez (jared-dominguez)]

Awesome, I see that installing the HWE Xorg also removes gnome-control-center. (and downgrades the nvidia driver from 340 to 331).

[penalvch (penalvch)]

Jared Dominguez, thank you for reporting this and helping make Ubuntu better.

Please execute the following command only once, as it will automatically gather debugging information, in a terminal:
apport-collect 1430622