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[Jean-Louis Dupond <jean-louis@xxxxxxxxx>]

apport information

** Attachment added: "xserver.errors.txt"
   https://bugs.launchpad.net/bugs/1432384/+attachment/4346347/+files/xserver.errors.txt

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https://bugs.launchpad.net/bugs/1432384

Title:
  Performance regression in 2:1.17.1-0ubuntu1+

Status in xorg-server package in Ubuntu:
  New

Bug description:
  I'm running Vivid some time now, and it worked fine.

  Now I upgraded to 2:1.17.1-0ubuntu2, and the performance in xfreerdp (RDP software) dropped like hell. Its just useless at this moment.
  Every action done in the program makes Xorg spike to +80-90% cpu.

  Now after a downgrade to the previous version of xserver (2:1.16.2.901-1ubuntu4), everything works fine again.
  Upgrade to 2:1.17.1-0ubuntu1, and its broken again.

  So it seems like there is a quite serious regression between those versions.
  --- 
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.16.2-0ubuntu3
  Architecture: amd64
  CompizPlugins: [core,bailer,detection,composite,opengl,decor,resize,move,gnomecompat,place,imgpng,session,compiztoolbox,vpswitch,grid,regex,mousepoll,snap,animation,wall,unitymtgrabhandles,workarounds,fade,expo,ezoom,scale,unityshell]
  CompositorRunning: None
  CurrentDesktop: GNOME
  DistUpgraded: 2015-01-21 00:24:56,954 DEBUG enabling apt cron job
  DistroCodename: vivid
  DistroRelease: Ubuntu 15.04
  DistroVariant: ubuntu
  ExtraDebuggingInterest: Yes, including running git bisection searches
  GraphicsCard:
   Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0116] (rev 09) (prog-if 00 [VGA controller])
     Subsystem: Dell Device [1028:050e]
   NVIDIA Corporation GF108M [GeForce GT 540M] [10de:0df4] (rev a1) (prog-if 00 [VGA controller])
     Subsystem: Dell Device [1028:050e]
  InstallationDate: Installed on 2011-07-14 (1340 days ago)
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha amd64 (20110705.1)
  MachineType: Dell Inc. Dell System XPS L502X
  Package: xorg-server (not installed)
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.19.0-9-generic root=/dev/mapper/ubuntu-root_crypt ro quiet splash modeset=1 pcie_aspm=force i915.i915_enable_rc6=1 i915.i915_enable_fbc=1 i915.lvds_downclock=1 vt.handoff=7
  ProcVersionSignature: Ubuntu 3.19.0-9.9-generic 3.19.1
  Tags:  vivid ubuntu regression reproducible has-workaround
  Uname: Linux 3.19.0-9-generic x86_64
  UpgradeStatus: Upgraded to vivid on 2015-01-20 (53 days ago)
  UserGroups: adm admin bacula cdrom dialout libvirtd lpadmin plugdev sambashare wireshark
  _MarkForUpload: True
  dmi.bios.date: 09/07/2012
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A12
  dmi.board.name: 0NJT03
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: 0.1
  dmi.modalias: dmi:bvnDellInc.:bvrA12:bd09/07/2012:svnDellInc.:pnDellSystemXPSL502X:pvr:rvnDellInc.:rn0NJT03:rvrA00:cvnDellInc.:ct8:cvr0.1:
  dmi.product.name: Dell System XPS L502X
  dmi.sys.vendor: Dell Inc.
  version.compiz: compiz 1:0.9.12.1+15.04.20150303-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.59-0ubuntu1
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.5.0-0ubuntu1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.5.0-0ubuntu1
  version.xserver-xorg-core: xserver-xorg-core 2:1.17.1-0ubuntu2
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0-1ubuntu2
  version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2build1
  xserver.bootTime: Sun Mar 15 16:57:12 2015
  xserver.configfile: default
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                                6125 
   vendor                                     AUO
  xserver.version: 2:1.16.2.901-1ubuntu4

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