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[RaffaeleC <raffaele.candeliere@xxxxxxxxxx>]

** Attachment added: "An close-up of the screen fater resume"
   https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/1452220/+attachment/4394422/+files/WP_20150508_001.jpg

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https://bugs.launchpad.net/bugs/1452220

Title:
  screen corruption on resume after suspend

Status in xserver-xorg-video-ati package in Ubuntu:
  New

Bug description:
  Hi all.
  Upon resume after a suspend, the screen gets corrupted. It is still readable (and usable) but the graphical output is like covered with a fine grid of vertical white lines, each (apparently) 1px wide, interleaved with 1px lines from the underlying real image, so that the effect is similar to a grayed-out image. Mouse is visible (and working). Writings are (almost) visible too, so that the the system is (hardly) usable, but the only way to restore proper video functionality is reboot. Useless to switch to a text-only tty and back (ctrl-alt f2 followed by alt f7).

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: xserver-xorg-video-ati 1:7.3.0-1ubuntu3.1
  ProcVersionSignature: Ubuntu 3.13.0-51.84-generic 3.13.11-ckt18
  Uname: Linux 3.13.0-51-generic x86_64
  NonfreeKernelModules: wl
  .tmp.unity.support.test.0:

  ApportVersion: 2.14.1-0ubuntu3.10
  Architecture: amd64
  CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,staticswitcher,workarounds,scale,expo,ezoom,dbus]
  CompositorRunning: compiz
  CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
  CompositorUnredirectFSW: true
  CurrentDesktop: Unity
  Date: Wed May  6 12:04:20 2015
  DistUpgraded: 2015-05-06 12:03:13,887 DEBUG failed to SystemUnLock() (E:Non bloccato)
  DistroCodename: trusty
  DistroVariant: ubuntu
  ExtraDebuggingInterest: Yes, including running git bisection searches
  GraphicsCard:
   Advanced Micro Devices, Inc. [AMD/ATI] RV630/M76 [Mobility Radeon HD 2600 XT/2700] [1002:9583] (prog-if 00 [VGA controller])
     Subsystem: Apple Inc. iMac 7,1 [106b:0083]
  InstallationDate: Installed on 2013-10-27 (555 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  MachineType: Apple Inc. iMac7,1
  ProcEnviron:
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=it_IT.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: root=UUID=b0c4efb9-95b0-4e5d-98e1-8beb43f413c2 ro rootflags=subvol=@  quiet splash initrd=\initrd.img
  SourcePackage: xserver-xorg-video-ati
  UpgradeStatus: Upgraded to trusty on 2015-05-06 (0 days ago)
  dmi.bios.date: 03/05/08
  dmi.bios.vendor: Apple Inc.
  dmi.bios.version: IM71.88Z.007A.B03.0803051705
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: Mac-F4238CC8
  dmi.board.vendor: Apple Inc.
  dmi.board.version: PVT
  dmi.chassis.asset.tag: Asset Tag#
  dmi.chassis.type: 13
  dmi.chassis.vendor: Apple Inc.
  dmi.chassis.version: Mac-F4238CC8
  dmi.modalias: dmi:bvnAppleInc.:bvrIM71.88Z.007A.B03.0803051705:bd03/05/08:svnAppleInc.:pniMac7,1:pvr1.0:rvnAppleInc.:rnMac-F4238CC8:rvrPVT:cvnAppleInc.:ct13:cvrMac-F4238CC8:
  dmi.product.name: iMac7,1
  dmi.product.version: 1.0
  dmi.sys.vendor: Apple Inc.
  version.compiz: compiz 1:0.9.11.3+14.04.20150313-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.56-1~ubuntu2
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.3-0ubuntu0.4
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.3-0ubuntu0.4
  version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2.7
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3.1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1.6
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
  xserver.bootTime: Wed May  6 10:35:39 2015
  xserver.configfile: default
  xserver.errors:

  xserver.logfile: /var/log/Xorg.0.log
  xserver.version: 2:1.15.1-0ubuntu2.7
  xserver.video_driver: radeon

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