Public bug reported:

Switching to a TTY and back fixes it.

Observed on trusty, utopic, and vivd. And on many different machines
with the same hardware.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: xserver-xorg-video-radeon 1:7.5.0-1ubuntu2
ProcVersionSignature: Ubuntu 3.19.0-12.12-generic 3.19.3
Uname: Linux 3.19.0-12-generic x86_64
.tmp.unity.support.test.0:
 
ApportVersion: 2.17-0ubuntu1
Architecture: amd64
CompizPlugins: No value set for 
`/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
CurrentDesktop: Unity
Date: Wed Apr  8 11:13:53 2015
DistUpgraded: 2015-01-24 16:21:53,459 DEBUG enabling apt cron job
DistroCodename: vivid
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
 Advanced Micro Devices, Inc. [AMD/ATI] Turks PRO [Radeon HD 7570] [1002:675d] 
(prog-if 00 [VGA controller])
   Subsystem: Dell Device [1028:2b20]
InstallationDate: Installed on 2014-07-25 (257 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
MachineType: Dell Inc. OptiPlex 7010
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-12-generic 
root=UUID=e505ac2d-47bc-4eb6-8759-06d542cb82b8 ro quiet splash vt.handoff=7
SourcePackage: xserver-xorg-video-ati
SystemImageInfo:
 current build number: 0
 device name: 
 channel: daily
 last update: Unknown
UpgradeStatus: Upgraded to vivid on 2015-01-24 (73 days ago)
dmi.bios.date: 09/09/2013
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A16
dmi.board.name: 0GY6Y8
dmi.board.vendor: Dell Inc.
dmi.board.version: A03
dmi.chassis.type: 6
dmi.chassis.vendor: Dell Inc.
dmi.modalias: 
dmi:bvnDellInc.:bvrA16:bd09/09/2013:svnDellInc.:pnOptiPlex7010:pvr01:rvnDellInc.:rn0GY6Y8:rvrA03:cvnDellInc.:ct6:cvr:
dmi.product.name: OptiPlex 7010
dmi.product.version: 01
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.12.1+15.04.20150330-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.60-2
version.libgl1-mesa-dri: libgl1-mesa-dri 10.5.2-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.5.2-0ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.17.1-0ubuntu3
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0-1ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 
2:2.99.917-1~exp1ubuntu2build1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 
1:1.0.11-1ubuntu2build1
xserver.bootTime: Wed Apr  8 11:12:48 2015
xserver.configfile: default
xserver.devices:
 input        Power Button         KEYBOARD, id 6
 input        Power Button         KEYBOARD, id 7
 input        Dell Dell USB Entry Keyboard KEYBOARD, id 8
 input        Logitech USB Optical Mouse MOUSE, id 9
xserver.errors:
 
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs: Output                                   DVI-0
xserver.version: 2:1.17.1-0ubuntu3
xserver.video_driver: radeon

** Affects: xserver-xorg-video-ati (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug compiz-0.9 trusty ubuntu utopic vivid

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https://bugs.launchpad.net/bugs/1441687

Title:
  Screen corruption after suspend/reboot

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