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[rho770 <1468232@xxxxxxxxxxxxxxxxxx>]

Thanks for the suggestions!

After BIOS update problem persists. Example is attached (note not
correctly displayed character "5").

Output of dmidecode -s bios-version && sudo dmidecode -s bios-release-date:
JBET50WW (1.15 )
06/10/2015

I am aware that this problem is reported for Ubuntu 14.10 which is
getting close to end-of-life. The problem was before observed also for
15.04. I performed a downgrade in order to use the Intel graphics stack
(which again did not seem to change the problem).

** Attachment added: "ascii.jpg"
   https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1468232/+attachment/4424523/+files/ascii.jpg

** Changed in: xorg (Ubuntu)
       Status: Incomplete => New

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https://bugs.launchpad.net/bugs/1468232

Title:
  Font corruption Intel Broadwell graphics

Status in xorg package in Ubuntu:
  New

Bug description:
  After resume from suspend it often happens that fonts are corrupted.
  The problem has not been observed if AccelMethod is set to "uxa".

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: xorg 1:7.7+7ubuntu2
  ProcVersionSignature: Ubuntu 3.16.0-41.57-generic 3.16.7-ckt11
  Uname: Linux 3.16.0-41-generic x86_64
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.14.7-0ubuntu8.5
  Architecture: amd64
  CompizPlugins: [core,composite,opengl,decor,regex,snap,vpswitch,imgpng,compiztoolbox,grid,staticswitcher,mousepoll,move,resize,place,gnomecompat,dbus,animation,expo,ring,workarounds,fade,session,kdecompat,scale]
  CompositorRunning: compiz
  CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
  CompositorUnredirectFSW: true
  Date: Wed Jun 24 10:16:47 2015
  DistUpgraded: Fresh install
  DistroCodename: utopic
  DistroVariant: ubuntu
  DkmsStatus:
   i915-3.19.2-3.16, 1, 3.16.0-41-generic, x86_64: installed
   virtualbox, 4.3.18, 3.16.0-41-generic, x86_64: installed
  ExtraDebuggingInterest: Yes, if not too technical
  GraphicsCard:
   Intel Corporation Broadwell-U Integrated Graphics [8086:1616] (rev 09) (prog-if 00 [VGA controller])
     Subsystem: Lenovo Device [17aa:5036]
  InstallationDate: Installed on 2015-06-18 (6 days ago)
  InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
  MachineType: LENOVO 20BX000XGE
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-41-generic root=UUID=ef80ed28-52d5-4bee-b65c-a543a2b68df4 ro quiet splash vt.handoff=7
  SourcePackage: xorg
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 12/23/2014
  dmi.bios.vendor: LENOVO
  dmi.bios.version: JBET41WW (1.06 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20BX000XGE
  dmi.board.vendor: LENOVO
  dmi.board.version: SDK0E50510 WIN
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: None
  dmi.modalias: dmi:bvnLENOVO:bvrJBET41WW(1.06):bd12/23/2014:svnLENOVO:pn20BX000XGE:pvrThinkPadT450s:rvnLENOVO:rn20BX000XGE:rvrSDK0E50510WIN:cvnLENOVO:ct10:cvrNone:
  dmi.product.name: 20BX000XGE
  dmi.product.version: ThinkPad T450s
  dmi.sys.vendor: LENOVO
  version.compiz: compiz 1:0.9.12+14.10.20140918-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.59-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.5.1-0intel1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.5.1-0intel1
  version.xserver-xorg-core: xserver-xorg-core 2:1.16.0-1ubuntu1.3
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.4.0-2ubuntu2
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917-1~exp1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2
  xserver.bootTime: Tue Jun 23 16:15:38 2015
  xserver.configfile: default
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                                1133 
   vendor                                     LGD
  xserver.version: 2:1.16.0-1ubuntu1.3

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