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[MegaBrutal <ubuntu@xxxxxxxxxxxxxx>]

Public bug reported:

I was experimenting with Ubuntu MATE, and I found severe screen
corruption whenever I run the image under a KVM virtual machine. I
attached a screenshot. I don't think the problem is Ubuntu MATE
specific. I also found it doesn't depend on the display manager. (It can
be either LightDM or GDM.)

Reproduce instructions:
1. Boot up a KVM virtual machine with an Ubuntu Vivid Vervet image.
2. Put some stress on the display: what I used to do is to launch Firefox and htop in a terminal, then lock the screen, or let it lock by itself.
3. Wait a little, then unlock the computer.
4. You'll see letters missing and images corrupted, like on the attached screenshot.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: xorg 1:7.7+7ubuntu4
ProcVersionSignature: Ubuntu 3.19.0-10.10-generic 3.19.2
Uname: Linux 3.19.0-10-generic x86_64
ApportVersion: 2.16.2-0ubuntu5
Architecture: amd64
Date: Sat Mar 28 02:04:36 2015
InstallationDate: Installed on 2015-03-27 (0 days ago)
InstallationMedia: Ubuntu-MATE 15.04 "Vivid Vervet" - Beta amd64 (20150326)
ProcEnviron:
 LANGUAGE=hu
 TERM=xterm
 PATH=(custom, no user)
 LANG=hu_HU.UTF-8
 SHELL=/bin/bash
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: xorg (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug vivid

** Attachment added: "UbuntuMATE-display-error.png"
   https://bugs.launchpad.net/bugs/1437536/+attachment/4358376/+files/UbuntuMATE-display-error.png

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https://bugs.launchpad.net/bugs/1437536

Title:
  Screen corruption under KVM with Spice display

Status in xorg package in Ubuntu:
  New

Bug description:
  I was experimenting with Ubuntu MATE, and I found severe screen
  corruption whenever I run the image under a KVM virtual machine. I
  attached a screenshot. I don't think the problem is Ubuntu MATE
  specific. I also found it doesn't depend on the display manager. (It
  can be either LightDM or GDM.)

  Reproduce instructions:
  1. Boot up a KVM virtual machine with an Ubuntu Vivid Vervet image.
  2. Put some stress on the display: what I used to do is to launch Firefox and htop in a terminal, then lock the screen, or let it lock by itself.
  3. Wait a little, then unlock the computer.
  4. You'll see letters missing and images corrupted, like on the attached screenshot.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: xorg 1:7.7+7ubuntu4
  ProcVersionSignature: Ubuntu 3.19.0-10.10-generic 3.19.2
  Uname: Linux 3.19.0-10-generic x86_64
  ApportVersion: 2.16.2-0ubuntu5
  Architecture: amd64
  Date: Sat Mar 28 02:04:36 2015
  InstallationDate: Installed on 2015-03-27 (0 days ago)
  InstallationMedia: Ubuntu-MATE 15.04 "Vivid Vervet" - Beta amd64 (20150326)
  ProcEnviron:
   LANGUAGE=hu
   TERM=xterm
   PATH=(custom, no user)
   LANG=hu_HU.UTF-8
   SHELL=/bin/bash
  SourcePackage: xorg
  UpgradeStatus: No upgrade log present (probably fresh install)

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