ubuntu-x-swat team mailing list archive

[Graeme Geldenhuys <graeme@xxxxxxxxxxxxxxxxx>]

The attached images [x11_paint_bug.png] shows how WINE applications
(and my custom drawn GUI toolkit - fpGUI) looks like with the default
open-source ATI driver. Notice all the lines are not connecting. This
bug has now been in Ubuntu since the 8.10 release.

Today I installed Ubuntu 10.04 (64-bit) and still this bug is visible
there. As soon as I upgrade to the proprietary ATI driver, then the bug
is gone.

I have created numerous tests to make sure the issue is not in my fpGUI
Toolkit, but as I said, the bug is also in all Windows applications run
under WINE. A simple test I did was draw a vertical line from the bottom
up. The first pixel is never painted with the open-source ATI drivers.
In Ubuntu 8.04.3 and earlier, this bug was not there.

** Attachment added: "Default ubuntu showing painting bugs."
   http://launchpadlibrarian.net/49017725/x11_paint_bug.png

-- 
missing pixels when drawing connecting lines
https://bugs.launchpad.net/bugs/353137
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