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[Daudi Amani <874619@xxxxxxxxxxxxxxxxxx>]

I have this same issue, on both upgraded 11.10 and newly installed 12.04
.. but only in twinview mode with two monitors on my workstation.
Display response to uner interaction (mouse clicks, movements, etc) is
excessively slow: about 20s per action (click, move window, etc)

I do not have this issue on my upgraded 11.10 on my Gateway NV79
notebook with external monitor in twinview.

Hardware specs for both systems are:

HAVE ISSUE 
=========================
Ubuntu 12.04 
3.2.0-24-generic-pae #37-Ubuntu SMP  i686 i386 GNU/Linux
ASUS P5E WS PRO motherboard REV 1.01g WITH iNTEL cORE2 qUAD q6600 @ 2.40GHZx4 6GiB ddr2
VIDEO: nVidea EVGA 320-P2-N811-AR GeForce 8800GTS 320MB 320-bit GDDR3

lspci -nn | grep VGA
  VGA compatible controller [0300]: NVIDIA Corp G80 [GeForce 8800 GTS] [10de:0193] (rev a2)

DOES NOT HAVE ISSUE
==========================
Ubuntu 11.10 
3.0.0-19-generic #33-Ubuntu SMP  x86_64 x86_64 x86_64 GNU/Linux
Gateway Notebook NV79

lspci -nn | grep VGA
  00:02.0 VGA compatible controller [0300]: Intel Corporation Core Processor Integrated Graphics Controller [8086:0046] (rev 12)

lshw -c video
  *-display               
       description: VGA compatible controller
       product: Core Processor Integrated Graphics Controller
       vendor: Intel Corporation
       physical id: 2
       bus info: pci@0000:00:02.0
       version: 12
       width: 64 bits
       clock: 33MHz
       capabilities: msi pm vga_controller bus_master cap_list rom
       configuration: driver=i915 latency=0
       resources: irq:42 memory:d0000000-d03fffff memory:c0000000-cfffffff ioport:3050(size=8)

Let me know if any further information would be helpful

-- 
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https://bugs.launchpad.net/bugs/874619

Title:
  Dragging windows around is slow/sluggish/laggy when multiple monitors
  are enabled

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