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[Marco Trevisan (Treviño) <mail@xxxxxxxxx>]

** Changed in: unity/5.0
   Importance: Undecided => High

** Changed in: unity/5.0
       Status: New => Confirmed

** Changed in: unity/5.0
    Milestone: None => 5.24.0

** Changed in: unity
    Milestone: 5.24.0 => 7.3.1

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https://bugs.launchpad.net/bugs/1050701

Title:
  [SRU regression] Slight UI lag after updating to Unity 5.16

Status in Unity:
  Confirmed
Status in Unity 5.0 series:
  Confirmed
Status in “unity” package in Ubuntu:
  Confirmed

Bug description:
  I've been using Unity 5.14. Today, I saw that Unity 5.16 was available
  in the -proposed repository. It greatly improved my 3d, but I noticed
  that things such as typing, dragging windows, using scrollbars, etc,
  have a slight and noticeable delay. I've rebooted to rule out any
  version clash issues.

  Reproduce:

  1) Enable -proposed
  2) Install the new Unity update (5.16)
  3) Restart lightdm (sudo service lightdm restart) and log into a Unity session
  4) Drag any window/scrollbar, highlight text, input text into a field, etc.
  5) Notice that there's a delay between when you perform the action to when the action takes place (you can see the window/scrollbar trying to catch up to your cursor, for example)

  Definitely related to the new Unity version, since I didn't have this
  issue until I applied this update. I haven't made any changes to
  anything graphics-related that would cause this to happen.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: unity 5.16.0-0ubuntu1
  ProcVersionSignature: Ubuntu 3.2.0-30.48-generic 3.2.27
  Uname: Linux 3.2.0-30-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  304.43  Sun Aug 19 20:14:03 PDT 2012
   GCC version:  gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5)
  .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: 2.0.1-0ubuntu13
  Architecture: amd64
  CompizPlugins: [core,composite,opengl,decor,grid,regex,place,mousepoll,vpswitch,move,compiztoolbox,imgpng,resize,session,gnomecompat,animation,wall,unitymtgrabhandles,expo,workarounds,ezoom,fade,scale,unityshell]
  CompositorRunning: compiz
  CrashDB: unity
  Date: Thu Sep 13 23:19:43 2012
  DistUpgraded: Fresh install
  DistroCodename: precise
  DistroVariant: ubuntu
  GraphicsCard:
   NVIDIA Corporation GF116 [GeForce GTS 450] [10de:1245] (rev a1) (prog-if 00 [VGA controller])
     Subsystem: Giga-byte Technology Device [1458:3523]
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
  JockeyStatus:
   xorg:nvidia_current - NVIDIA accelerated graphics driver (Proprietary, Disabled, In use)
   xorg:nvidia_current_updates - NVIDIA accelerated graphics driver (post-release updates) (Proprietary, Disabled, Not in use)
  MachineType: Hewlett-Packard p7-1038
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-30-generic root=UUID=b615a0a8-be18-43c5-8395-6bc4c55719d3 ro quiet splash vt.handoff=7
  SourcePackage: unity
  UpgradeStatus: No upgrade log present (probably fresh install)
  XorgConf:
   Section "Device"
   	Identifier	"Default Device"
   	Option	"NoLogo"	"True"
   EndSection
  dmi.bios.date: 03/22/2011
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 6.06
  dmi.board.name: 2AB1
  dmi.board.vendor: FOXCONN
  dmi.board.version: 1.00
  dmi.chassis.asset.tag: MXU12106NH
  dmi.chassis.type: 3
  dmi.chassis.vendor: Hewlett-Packard
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr6.06:bd03/22/2011:svnHewlett-Packard:pnp7-1038:pvr:rvnFOXCONN:rn2AB1:rvr1.00:cvnHewlett-Packard:ct3:cvr:
  dmi.product.name: p7-1038
  dmi.sys.vendor: Hewlett-Packard
  version.compiz: compiz 1:0.9.7.8-0ubuntu1.4
  version.ia32-libs: ia32-libs 20090808ubuntu36
  version.libdrm2: libdrm2 2.4.32-1ubuntu1
  version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.3+8.0.2-0ubuntu3.2
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.3+8.0.2-0ubuntu3.2
  version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
  version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu10.7
  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 2:2.19.0-0ubuntu1~xup1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build2

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