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[Launchpad Bug Tracker <309747@xxxxxxxxxxxxxxxxxx>]

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Binary package hint: ubuntu-desktop

This is a metabug (like bug #1) that denotes that Ubuntu's 3d Desktop /
Compiz rendering effects / Composite graphics mode etc is NOT stable
on/for the majority of hardware/drivers on which Ubuntu desktop edition
is run (hence reporting against the ubuntu-desktop package).

Until this bug is solved, it is not relevant to talk about Ubuntu as
providing 3d effects in any other matter other than a test/development
version. We cannot recommend anyone that actually uses Ubuntu
professionally to have them enabled.

When I refer to stable I mean the following more rudimentary specs:
 - No X server crashes
 - No recurrent garbled or corrupted displays

But ALSO:
 - No overlay/transparency rendering glitches
 - No weird window behaviors when maximizing/moving (top window decorations inaccessible under the top panel, no minimizing of certain windows, inability to move certain windows etc)
 - No flickering
 - No weird white or black space displaying in various parts of the desktop

In short, I'd put the this bug as solved for a specific hardware/driver
combination when one can expect to be able to work weeks and weeks and
run 15-25 windows/applications simultaneously non-stop with at least but
minimal 3d desktop effects enabled without experiencing any of the above
nuisances. The same sort of usability that Mac-users take for granted.

Steps to reproduce:
 1. Enable the basic desktop effects
 2. Use your computer as usual for say around 100 hours
 3. If none of the above problems were experienced, please report this hardware/driver combination success together with the output of "lspci -vvnn", your xorg.conf-file together with any eventual special steps taken to achieve the problem free desktop effects set-up. 
 4. If any of the above problems occur, please report them as separate bugs in case they are not already reported - this meta-bug is only for tracking the overall usability issues.

This bug is solved when we can confirm full stability with the most used graphics cards and drivers (anyone have a good list to track the bug against?)
 - Most used Nvidia cards and drivers
 - Most used Intel cards and drivers
 - Most used ATI cards and drivers

** Affects: ubuntu
     Importance: Undecided
         Status: Confirmed

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

-- 
3d desktop effects is not (and has yet never been) stable for the majority of hardware/drivers that is used with Ubuntu - Compare with Mac OS X
https://bugs.edge.launchpad.net/bugs/309747
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