[Bug 160226] Re: In a dual head setup with different resolutions, background wallpaper + desktop icons disappear when compiz runs

[Vancouverite]

I had a very similar problem in 8.10 (amd64) and now have the same
similar thing in 9.04 (amd64).

For me the desktop just freezes when I start compiz.  It doesn't go
black, it just stays exactly the same: can't change the background,
animations don't work, and file/folder icons don't update.

Of note:  When I use the proprietary driver v180 my desktop completely
locks up with compiz.  The screen flashes and rendering becomes erratic.
I have to hard-shutdown to recover and reconfigure the xserver in
recovery mode to get back to work.  Using the older v173 to run compiz
leaves me with the stuck desktop - but at least it runs!

lshw returns the following about my video card:

    *-pci
          description: Host bridge
          product: 82Q963/Q965 Memory Controller Hub
          vendor: Intel Corporation
          physical id: 100
          bus info: pci at 0000:00:00.0
          version: 02
          width: 32 bits
          clock: 33MHz
        *-pci:0
             description: PCI bridge
             product: 82Q963/Q965 PCI Express Root Port
             vendor: Intel Corporation
             physical id: 1
             bus info: pci at 0000:00:01.0
             version: 02
             width: 32 bits
             clock: 33MHz
             capabilities: pci pm msi pciexpress bus_master cap_list
             configuration: driver=pcieport-driver
           *-display
                description: VGA compatible controller
                product: GeForce 8400 GS
                vendor: nVidia Corporation
                physical id: 0
                bus info: pci at 0000:01:00.0
                version: a1
                width: 64 bits
                clock: 33MHz
                capabilities: pm msi pciexpress bus_master cap_list
                configuration: driver=nvidia latency=0 module=nvidia

Could the problem be related to the 64 bit system and vid card, with
only a 32 bit pci bridge?

What else can I provide to help find a resolution to this problem?

Cheers.

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In a dual head setup with different resolutions, background wallpaper + desktop icons disappear when compiz runs
https://bugs.launchpad.net/bugs/160226
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