Small graphical glitch on the HUD while using Unity fullscreen (netbook mode)

[Dario Ruellan]

I detected this silly glitch while using Unity fullscreen (Netbook mode).
Hardware reference can be found here: https://wiki.ubuntu.com/druellan/hpenvy1095la

Steps to reproduce:
Put Unity on fullscreen (netbook) mode.
Open Nautilus just to have a referene background.
Push ALT to open the HUD.
The "blured" background of the HUD is not right, some parts are expanded vertically.

Screenshot:
TOP - shows how the background is supposed to be seen.
BOTTOM - shows how the background got rendered instead.

Details:
The effect can sometimes blink between the correct and the wrong visualization. This can happen on its own or related to focus. For example, it was imposibble to take a screenshot using print-screen, because the effect reverts to the "correct" condition while I push the key.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: unity 5.16.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-31.50-generic-pae 3.2.28
Uname: Linux 3.2.0-31-generic-pae i686
NonfreeKernelModules: wl
.tmp.unity.support.test.0:

ApportVersion: 2.0.1-0ubuntu13
Architecture: i386
CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
CompositorRunning: compiz
CurrentDmesg:
 Error: command ['sh', '-c', 'dmesg | comm -13 --nocheck-order /var/log/dmesg -'] failed with exit code 1: comm: /var/log/dmesg: Permission denied
 dmesg: write failed: Broken pipe
Date: Mon Sep 24 08:41:54 2012
DistUpgraded: Fresh install
DistroCodename: precise
DistroVariant: ubuntu
DkmsStatus:
 bcmwl, 5.100.82.38+bdcom, 3.2.0-29-generic-pae, i686: installed
 bcmwl, 5.100.82.38+bdcom, 3.2.0-30-generic-pae, i686: installed
 bcmwl, 5.100.82.38+bdcom, 3.2.0-31-generic-pae, i686: installed
GraphicsCard:
 Intel Corporation Core Processor Integrated Graphics Controller [8086:0046] (rev 02) (prog-if 00 [VGA controller])
   Subsystem: Hewlett-Packard Company Device [103c:1436]
 Advanced Micro Devices [AMD] nee ATI Madison [Radeon HD 5000M Series] [1002:68c1] (rev ff) (prog-if ff)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423)
MachineType: Hewlett-Packard HP ENVY 14 Notebook PC
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-31-generic-pae root=UUID=d2d32bd2-dc97-43d8-b52f-2b9a25a0de33 ro quiet splash modeset=1 hybridopts=ON,IGD,OFF vt.handoff=7
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/01/2011
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: F.26
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 1436
dmi.board.vendor: Hewlett-Packard
dmi.board.version: 59.24
dmi.chassis.asset.tag: CNU0250TQZ
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnHewlett-Packard:bvrF.26:bd12/01/2011:svnHewlett-Packard:pnHPENVY14NotebookPC:pvr0492100000241910000620000:rvnHewlett-Packard:rn1436:rvr59.24:cvnHewlett-Packard:ct10:cvrChassisVersion:
dmi.product.name: HP ENVY 14 Notebook PC
dmi.product.version: 0492100000241910000620000
dmi.sys.vendor: Hewlett-Packard
version.compiz: compiz 1:0.9.7.8-0ubuntu1.4
version.libdrm2: libdrm2 2.4.32-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.4-0ubuntu0.1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.4-0ubuntu0.1
version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu10.8
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1.2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20111219.aacbd629-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4.1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build2

[Omer Akram (om26er)]

Thanks for the bug report. This particular bug has already been reported and is a duplicate of bug 855627, so is being marked as such. Any further discussion regarding the bug should occur in the other report. Feel free to report any other bugs you may find.

[Dario Ruellan (druellan)]

Hi Omer.
About the duplicate flag: while technically could be related, visually is not exactly a duplicate of bug #855627: its only related to the HUD, the content is not shifted but distorted (I can be wrong), only happens while using the maximized version of the Dash, and is not permanent and can blink. Just changed the description to address the last behavior.