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["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

As per https://bugs.launchpad.net/ubuntu/+bug/309747/comments/4 .

** Changed in: ubuntu
       Status: Confirmed => Invalid

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https://bugs.launchpad.net/bugs/309747

Title:
  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

Status in Ubuntu:
  Invalid
Status in “mesa” package in Ubuntu:
  Invalid

Bug description:
  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

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