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[Alberto Salvia Novella <es20490446e@xxxxxxxxx>]

** Changed in: xserver-xorg-video-intel (Ubuntu)
   Importance: Undecided => Critical

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https://bugs.launchpad.net/bugs/1434219

Title:
  video mode switches make graphical processes unstable?

Status in xserver-xorg-video-intel package in Ubuntu:
  Confirmed

Bug description:
  Not sure what to hang this on. I have a Lenovo T550 with an Intel
  HD5500.

  It barely worked in Ubuntu 14.04 so here we are on 15.04 beta.

  light-locker seems to change video mode, so logging out and logging in again breaks the desktop.
  xscreensaver does not suffer from this problem.

  Sometimes I get weird sideways-scrolling of the entire display
  (analogue tv anyone?)

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: xserver-xorg-video-intel 2:2.99.917-1~exp1ubuntu2build1
  ProcVersionSignature: Ubuntu 3.19.0-9.9-generic 3.19.1
  Uname: Linux 3.19.0-9-generic x86_64
  ApportVersion: 2.16.2-0ubuntu3
  Architecture: amd64
  CurrentDesktop: XFCE
  Date: Thu Mar 19 11:05:36 2015
  InstallationDate: Installed on 2015-03-05 (14 days ago)
  InstallationMedia: Xubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
  SourcePackage: xserver-xorg-video-intel
  UpgradeStatus: Upgraded to vivid on 2015-03-19 (0 days ago)

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