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[Jussi Rintanen <778083@xxxxxxxxxxxxxxxxxx>]

Me too: I believe that the bug is related to the option of selecting windows when the mouse is over the window. I have two computers, an old Dell D610 laptop with an Intel graphics card, and an equally old Dell Dimension 5150 with an old ATI Radeon, both having some windows not redrawn when switching workspaces. If I have windows selected when clicking them, then the problem disappears and windows are redrawn properly.

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https://bugs.launchpad.net/bugs/778083

Title:
  Switching workspaces does not always redraw everything necessary

Status in “metacity” package in Ubuntu:
  Confirmed

Bug description:
  This bug may be related to metacity, but I am uncertain of that.

  Since I upgraded to Natty, I've been having a problem when logging in
  with the Gnome desktop (the Unity desktop is not available for me
  because my graphics card has no available 3D driver). I've defined
  eight workspaces, arranged in a 4x2 fashion. When I switch workspaces,
  using CTRL-ALT-{left,right,up,down}-arrow, sometimes something (I
  suspect metacity) does not redraw everything that needs to be drawn.
  Especially window borders belonging to windows that are located on the
  previous workspace are sometimes left over on the new workspace, but
  only on top of windows located there, not on the background.

  This is, however, not always the case, and I cannot seem to figure out
  when it does and does not happen. If I trigger a complete screen
  redraw, for example from a terminal by triggering the visual bell,
  then everything is restored to how it is supposed to look.

  I've attached four images: one of the workspace at (1,2) (on which I'm
  filling in this bug report), one of the Gnome Terminal at (2,2) and
  one of the Gnome Terminal at (1,2). When I'm viewing workspace (1,2),
  then switch to (2,2) using CTRL-ALT-down-arrow, wait a second (keep on
  pressing CTRL and ALT) and then switch to (1,2) using CTRL-ALT-left-
  arrow, then I get (part of) the borders of the Gnome Terminal on (2,2)
  drawn onto the Gnome Terminal at (1,2).

  As stated, I'm not sure which package is responsible (for all I know,
  perhaps the graphics driver is buggy and does not draw everything that
  it's told to, although I don't have any other drawing problems).

  ProblemType: Bug
  DistroRelease: Ubuntu 11.04
  Package: metacity 1:2.30.3-0ubuntu8
  ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
  Uname: Linux 2.6.38-8-generic i686
  Architecture: i386
  Date: Thu May  5 21:21:53 2011
  ProcEnviron:
   LANGUAGE=en_US:en
   PATH=(custom, user)
   LANG=en_US.UTF-8
   SHELL=/bin/zsh
  SourcePackage: metacity
  UpgradeStatus: Upgraded to natty on 2011-04-16 (18 days ago)

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