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Not sure if this is a graphics driver bug, or gnome-shell doing something wrong, but I've got to start somewhere so I'm filing it with gnome-shell for now. Attached screen shot shows [at least] two kinds of graphical artefacts that I'm seeing in Fedora 16. The image is mainly the old X11 weave, which seems to provoke this bug fairly well. The two artefacts are: a) Horizontal banding. I pulled out the levels tool as you can see in the screen shot, and even though the image is only supposed to contain pure black and pure white, you still get a bunch of not-quite-black and not-quite-white there. Dragging the window around keeps the banding stationary, so it seems the bug has something to do with the screen coordinates rather then window coordinates. b) Window trailing noise. This is most of the gunk in the screen shot. It was created by dragging the Levels dialog on top of the main gimp window. These artefacts tend to disappear now and then, so it seems like a full redraw of the window will remove them. Hardware is a Radeon HD 4550 (RV710). ~ [ossman@ossman]$ rpm -q xorg-x11-drv-ati mesa-libGL libdrm gnome-shell clutter xorg-x11-drv-ati-6.14.3-3.20111125git534fb6e41.fc16.x86_64 mesa-libGL-7.11.2-1.fc16.x86_64 mesa-libGL-7.11.2-1.fc16.i686 libdrm-2.4.27-2.fc16.x86_64 libdrm-2.4.27-2.fc16.i686 gnome-shell-3.2.1-2.fc16.x86_64 clutter-1.8.2-3.fc16.x86_64
Created attachment 558308 [details] Screen shot of artefacts
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Fedora 16 changed to end-of-life (EOL) status on 2013-02-12. Fedora 16 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. Thank you for reporting this bug and we are sorry it could not be fixed.