Public bug reported:

Attached is an example of a problem behaviour of horizontal black lines
which affects Evince, Guadayeque and other programs on my desktop.

The corruption is progressive (when first opened, apps don't tend to
have the problem, happens on a per-window basis, (moving another window
over the area is not corrupted) and seems to permanently affect certain
in-memory glyphs (e.g. even after a restore and maximise, the icons in
some applications remain similarly corrupted).

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: xorg 1:7.7+1ubuntu5
Uname: Linux 3.11.0-031100-generic i686
ApportVersion: 2.12.1-0ubuntu3
Architecture: i386
CompizPlugins: No value set for 
`/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
Date: Mon Sep  9 15:45:26 2013
DistUpgraded: Fresh install
DistroCodename: saucy
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes, including running git bisection searches
GraphicsCard:
 Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller 
[8086:2a42] (rev 07) (prog-if 00 [VGA controller])
   Subsystem: Toshiba America Info Systems Device [1179:000c]
   Subsystem: Toshiba America Info Systems Device [1179:000c]
InstallationDate: Installed on 2013-08-15 (25 days ago)
InstallationMedia: Ubuntu-GNOME 13.10 "Saucy Salamander" - Alpha i386 (20130626)
MachineType: TOSHIBA PORTEGE R600
MarkForUpload: True
ProcEnviron:
 LANGUAGE=en_GB:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.11.0-031100-generic 
root=/dev/mapper/ubuntu--gnome--vg-root ro crashkernel=384M-2G:64M,2G-:128M 
quiet splash vt.handoff=7
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/23/2008
dmi.bios.vendor: TOSHIBA
dmi.bios.version: Version 1.50
dmi.board.asset.tag: 0000000000
dmi.board.name: Portable PC
dmi.board.vendor: TOSHIBA
dmi.board.version: Version A0
dmi.chassis.asset.tag: 0000000000
dmi.chassis.type: 10
dmi.chassis.vendor: TOSHIBA
dmi.chassis.version: Version 1.0
dmi.modalias: 
dmi:bvnTOSHIBA:bvrVersion1.50:bd10/23/2008:svnTOSHIBA:pnPORTEGER600:pvrPPR61E-00Q00CEN:rvnTOSHIBA:rnPortablePC:rvrVersionA0:cvnTOSHIBA:ct10:cvrVersion1.0:
dmi.product.name: PORTEGE R600
dmi.product.version: PPR61E-00Q00CEN
dmi.sys.vendor: TOSHIBA
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.46-1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.2-1ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.2-1ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.14.2.901-2ubuntu4
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu3.1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.2.0-0ubuntu6
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.14-4ubuntu3
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.9-2ubuntu1
xserver.bootTime: Mon Sep  9 13:53:48 2013
xserver.configfile: default
xserver.errors:
 
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 
xserver.version: 2:1.14.2.901-2ubuntu4

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


** Tags: apport-bug i386 saucy ubuntu

** Attachment added: "Corruption on my external monitor (portrait mode)"
   
https://bugs.launchpad.net/bugs/1222871/+attachment/3811159/+files/Screenshot%20from%202013-09-09%2015%3A36%3A59.png

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https://bugs.launchpad.net/bugs/1222871

Title:
  Corrupted painting of window surfaces

Status in “xorg” package in Ubuntu:
  New

Bug description:
  Attached is an example of a problem behaviour of horizontal black
  lines which affects Evince, Guadayeque and other programs on my
  desktop.

  The corruption is progressive (when first opened, apps don't tend to
  have the problem, happens on a per-window basis, (moving another
  window over the area is not corrupted) and seems to permanently affect
  certain in-memory glyphs (e.g. even after a restore and maximise, the
  icons in some applications remain similarly corrupted).

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: xorg 1:7.7+1ubuntu5
  Uname: Linux 3.11.0-031100-generic i686
  ApportVersion: 2.12.1-0ubuntu3
  Architecture: i386
  CompizPlugins: No value set for 
`/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: None
  Date: Mon Sep  9 15:45:26 2013
  DistUpgraded: Fresh install
  DistroCodename: saucy
  DistroVariant: ubuntu
  ExtraDebuggingInterest: Yes, including running git bisection searches
  GraphicsCard:
   Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller 
[8086:2a42] (rev 07) (prog-if 00 [VGA controller])
     Subsystem: Toshiba America Info Systems Device [1179:000c]
     Subsystem: Toshiba America Info Systems Device [1179:000c]
  InstallationDate: Installed on 2013-08-15 (25 days ago)
  InstallationMedia: Ubuntu-GNOME 13.10 "Saucy Salamander" - Alpha i386 
(20130626)
  MachineType: TOSHIBA PORTEGE R600
  MarkForUpload: True
  ProcEnviron:
   LANGUAGE=en_GB:en
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.11.0-031100-generic 
root=/dev/mapper/ubuntu--gnome--vg-root ro crashkernel=384M-2G:64M,2G-:128M 
quiet splash vt.handoff=7
  SourcePackage: xorg
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 10/23/2008
  dmi.bios.vendor: TOSHIBA
  dmi.bios.version: Version 1.50
  dmi.board.asset.tag: 0000000000
  dmi.board.name: Portable PC
  dmi.board.vendor: TOSHIBA
  dmi.board.version: Version A0
  dmi.chassis.asset.tag: 0000000000
  dmi.chassis.type: 10
  dmi.chassis.vendor: TOSHIBA
  dmi.chassis.version: Version 1.0
  dmi.modalias: 
dmi:bvnTOSHIBA:bvrVersion1.50:bd10/23/2008:svnTOSHIBA:pnPORTEGER600:pvrPPR61E-00Q00CEN:rvnTOSHIBA:rnPortablePC:rvrVersionA0:cvnTOSHIBA:ct10:cvrVersion1.0:
  dmi.product.name: PORTEGE R600
  dmi.product.version: PPR61E-00Q00CEN
  dmi.sys.vendor: TOSHIBA
  version.compiz: compiz N/A
  version.libdrm2: libdrm2 2.4.46-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 9.2-1ubuntu1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 9.2-1ubuntu1
  version.xserver-xorg-core: xserver-xorg-core 2:1.14.2.901-2ubuntu4
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu3.1
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.2.0-0ubuntu6
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.14-4ubuntu3
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 
1:1.0.9-2ubuntu1
  xserver.bootTime: Mon Sep  9 13:53:48 2013
  xserver.configfile: default
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   
  xserver.version: 2:1.14.2.901-2ubuntu4

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