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[Launchpad Bug Tracker <1100827@xxxxxxxxxxxxxxxxxx>]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: unity (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1100827

Title:
  "Sorry, nothing matches" string in dash search results flickers during
  search

Status in “unity” package in Ubuntu:
  Confirmed

Bug description:
  When searching for content using the dash, the string "Sorry, there is
  nothing that matches your search." is displayed in the dash when
  search can't find anything. The string flickers on and off as it's
  redrawn. This is a bad user experience.

  To reproduce:
  1) Hit the super key to invoke the dash
  2) Type in a string that will not return any search results, like "asdfasdfasdf"
  3) Watch the dash for a few (5-10) seconds

  Expected results:
  The search begins and the string "Sorry, there is nothing that matches your search" is drawn in the dash

  Actual results:
  The search begins and the string "Sorry, there is nothing that matches your search" is drawn in the dash. The string flickers at an irregular cadence. I assume this happens whenever new search results arrive and the status of the results is redrawn in the dash.

  The flickering seems more frequent (5-10Hz?) on devices with fast
  disks such as SSDs.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.10
  Package: unity 6.12.0-0ubuntu0.2
  Uname: Linux 3.6.3-030603-generic x86_64
  NonfreeKernelModules: nvidia
  .proc.driver.nvidia.gpus.0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/gpus/0'
  .proc.driver.nvidia.registry: Binary: ""
  .proc.driver.nvidia.version:
   NVRM version: NVIDIA UNIX x86_64 Kernel Module  310.14  Tue Oct  9 11:52:41 PDT 2012
   GCC version:  gcc version 4.7.2 (Ubuntu/Linaro 4.7.2-2ubuntu1)
  .proc.driver.nvidia.warnings.fbdev:
   Your system is not currently configured to drive a VGA console
   on the primary VGA device. The NVIDIA Linux graphics driver
   requires the use of a text-mode VGA console. Use of other console
   drivers including, but not limited to, vesafb, may result in
   corruption and stability problems, and is not supported.
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.6.1-0ubuntu9
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: compiz
  Date: Thu Jan 17 10:48:35 2013
  DistUpgraded: 2012-08-07 11:19:37,876 DEBUG enabling apt cron job
  DistroCodename: quantal
  DistroVariant: ubuntu
  DkmsStatus:
   nvidia-experimental-310, 310.14, 3.5.0-21-generic, x86_64: installed
   nvidia-experimental-310, 310.14, 3.6.3-030603-generic, x86_64: installed
   virtualbox, 4.1.18, 3.5.0-19-generic, x86_64: installed
   virtualbox, 4.1.18, 3.5.0-21-generic, x86_64: installed
   virtualbox, 4.1.18, 3.6.3-030603-generic, x86_64: installed
  GraphicsCard:
   NVIDIA Corporation G84 [GeForce 8600M GT] [10de:0407] (rev a1) (prog-if 00 [VGA controller])
     Subsystem: Apple Inc. Device [106b:00a0]
  InstallationDate: Installed on 2010-09-17 (853 days ago)
  InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Beta amd64 (20100901.1)
  MachineType: Apple Inc. MacBookPro3,1
  MarkForUpload: True
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.6.3-030603-generic root=UUID=4b3d81ed-fb5d-4946-97c0-ec537e1bfa3f ro quiet splash
  SourcePackage: unity
  UpgradeStatus: Upgraded to quantal on 2012-08-07 (163 days ago)
  dmi.bios.date: 03/05/08
  dmi.bios.vendor: Apple Inc.
  dmi.bios.version: MBP31.88Z.0070.B07.0803051658
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: Mac-F4238BC8
  dmi.board.vendor: Apple Inc.
  dmi.board.version: PVT
  dmi.chassis.asset.tag: Asset Tag#
  dmi.chassis.type: 2
  dmi.chassis.vendor: Apple Inc.
  dmi.chassis.version: Mac-F4238BC8
  dmi.modalias: dmi:bvnAppleInc.:bvrMBP31.88Z.0070.B07.0803051658:bd03/05/08:svnAppleInc.:pnMacBookPro3,1:pvr1.0:rvnAppleInc.:rnMac-F4238BC8:rvrPVT:cvnAppleInc.:ct2:cvrMac-F4238BC8:
  dmi.product.name: MacBookPro3,1
  dmi.product.version: 1.0
  dmi.sys.vendor: Apple Inc.
  version.compiz: compiz 1:0.9.8.6-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.39-0ubuntu1
  version.libgl1-mesa-dri: libgl1-mesa-dri 9.0-0ubuntu1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 9.0-0ubuntu1
  version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
  version.xserver-xorg-core: xserver-xorg-core 2:1.13.0-0ubuntu6.1
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.99.99~git20120913.8637f772-0ubuntu1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.20.9-0ubuntu2
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.2-0ubuntu3

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