[Bug 1362419] [NEW] screen freezes periodically

[Lorange]

Public bug reported:

After the recent installing of Kubuntu, the screen freezes periodically.
It appears often but accidentally. The keyboard and mouse work, the
application continues to run, but the screen is not updated. ALT + CTRL
+ F1 is working and "sodo service lightdm restart" solves problem for
while.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: kubuntu-desktop 1.308.1.1
ProcVersionSignature: Ubuntu 3.13.0-34.60-generic 3.13.11.4
Uname: Linux 3.13.0-34-generic i686
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3.3
Architecture: i386
CurrentDesktop: KDE
Date: Thu Aug 28 10:38:41 2014
InstallationDate: Installed on 2014-08-27 (0 days ago)
InstallationMedia: Kubuntu 14.04.1 LTS "Trusty Tahr" - Release i386 (20140722.2)
SourcePackage: kubuntu-meta
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: kubuntu-meta (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386 trusty

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Title:
  screen freezes periodically

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