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[Bug 920650] [NEW] windows smoothly and slowly lag behind mouse cursor when using multiple monitors


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I don't know for certain if this unity or compiz bug. I have experienced
the same in ArchLinux with compiz 0.9.x.

Story (involving glxgears as a method of predicting slowness).
1. I'm using latest and greatest Van Vugt's PPA for Oneiric
2. When I start unity on a laptop with no monitor attached in 11.10, glxears shows me 2800 fps, everything seems to be smooth, no lags
3. When I attach VGA monitor to the system, glxgears show me about 1200 fps or so, it's still smooth, no lags
4. I try to open windows drag around, more windows, glxgears shows 600 (at this point windowses are kinda slowing behid the mouse pointer, sometimes it's so bad that if I move mouse fast around, windows still move around for 5-7 seconds after I stop)
5. More windows will make lag appear faster (well more resources used more slowness :))
6. This setup is not usable at work cause sometimes it's behaving quite ok for some time, but sometimes even 10 windows make it lag a lot

NOTE: The same driver version (fglrx), ubuntu 11.04 with 0.8.x compiz
behaves excellent with 2 monitors as well, it works with ~40 windowses
w/o any issues at all, it doesn't lag at all, it's smooth at all times,
no heavy glxgears drop when adding second monitor (for comparison: it
shows about 3500 at start (one monitor), adding monitor and opening a
lot of windowes makes it show no less than 2500).

Somehow I feel that's compiz 0.9.x, as the same lagginess was present in
archlinux using 0.9.x, with 0.8.x it was great in arch as well.

Additional info: fglrx 11.12, vsync off, radeon 3650 mobile

If You need any info, please ask, if needed I can try to test it in
development version of compiz or precise.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: unity 4.24.0-0ubuntu2.1
ProcVersionSignature: Ubuntu 3.0.0-14.23~ppa1-generic-tuxonice 3.0.9
Uname: Linux 3.0.0-14-generic-tuxonice x86_64
NonfreeKernelModules: fglrx
ApportVersion: 1.23-0ubuntu4
Architecture: amd64
CompizPlugins: [core,bailer,detection,composite,opengl,decor,imgpng,snap,move,grid,resize,vpswitch,mousepoll,wall,place,gnomecompat,compiztoolbox,unitymtgrabhandles,regex,session,animation,expo,workarounds,ezoom,staticswitcher,fade,scale,unityshell]
CompositorRunning: compiz
Date: Mon Jan 23 22:31:56 2012
DistUpgraded: Fresh install
DistroCodename: oneiric
DistroVariant: ubuntu
 fglrx, 8.920, 3.0.0-14-generic-tuxonice, x86_64: installed
 fglrx, 8.920, 3.0.0-15-generic, x86_64: installed
 ATI Technologies Inc Mobility Radeon HD 3650 [1002:9591] (prog-if 00 [VGA controller])
   Subsystem: Lenovo Device [17aa:2117]
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111011)
 xorg:fglrx_updates - ATI/AMD proprietary FGLRX graphics driver (post-release updates) (Proprietary, Disabled, Not in use)
 xorg:fglrx - ATI/AMD proprietary FGLRX graphics driver (Proprietary, Enabled, In use)
MachineType: LENOVO 205545G
 Socket 0:
   no product info available
 Socket 0:
   no card
 PATH=(custom, no user)
ProcKernelCmdLine: root=/dev/disk/by-label/root ro quiet splash vt.handoff=7 nomodeset vga=0x346 noswap noresume
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/14/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 6FET91WW (3.21 )
dmi.board.name: 205545G
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr6FET91WW(3.21):bd10/14/2011:svnLENOVO:pn205545G:pvrThinkPadT500:rvnLENOVO:rn205545G:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 205545G
dmi.product.version: ThinkPad T500
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.6+bzr20110929-0ubuntu6vv11
version.fglrx-installer: fglrx-installer N/A
version.ia32-libs: ia32-libs 20090808ubuntu26
version.libdrm2: libdrm2 2.4.26-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 7.11-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.11-0ubuntu3
version.xserver-xorg: xserver-xorg 1:7.6+7ubuntu7
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.0-1ubuntu13
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20110811.g93fc084-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.15.901-1ubuntu2.1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110411+8378443-1

** Affects: compiz (Ubuntu)
     Importance: Undecided
         Status: New

** Tags: amd64 apport-bug compiz-0.9 oneiric running-unity ubuntu
windows smoothly and slowly lag behind mouse cursor when using multiple monitors
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