Comment 23 for bug 555595

Ok,

Here some new informations :

- My graphic card reported by lspci is : 00:02.0 VGA compatible controller: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (rev 0c)
- I have installed Lucid Final on another disk.
- I have applied all updates available.
- The kernel running is 'linux-image-2.6.32-22-generic-pae'.
- I have set the theme to 'Dust'.
- I have activated the tweak 'have_icons' :
    - /desktop/gnome/interface/menus_have_icons
    - /desktop/gnome/interface/buttons_have_icons
- I have activated the tweak 'button_layout' :
    - /apps/metacity/general/button_layout
    - I set it to : menu:minimize,maximize,close

After that I go to System -> Preferences -> Appearance -> Visual effects, and select 'Extra' (it was already set to 'Normal').
At this stage all things seems working properly, compiz working with defaults effects from the 'Dust' theme, etc ...

Now, I restore all my compiz parameters I have saved under Karmic (see file in attachment').

Bingo !!! Compiz gona slow down and render the desktop unusable (seem to refresh screen every 15-20 secs).

It's sure the problem come from the kernel, because under my Karmic, I have also backported kernel from lucid, and I'm actually forced to stick with the 'linux-image-2.6.32-18-generic-pae' because if I try every versions >= '-19', then same problem occur.

I have not already tested 'linux-image-2.6.32-18-generic-pae' under Lucid to see if it fix the problem, but I'm pretty confident it act like the same as under my Karmic environment with kernel backported ...

Hope it help ...