[Bug 374307] [NEW] Blender - OpenGL windows behaving badly; incorrect repainting and screen corruption

[Adam Johnson]

Public bug reported:

Binary package hint: blender

The desktop paints on top of the Blender window and corrupts the
display. Launch Blender in windowed mode and drag the window. Observe
the window is erroneously repainted with the desktop during the drag
operation.

Also, opening a render window is fairly hit-n-miss. As soon as the
render completes the OpenGL display is painted over the top of it.
Dragging the render output window leaves a trail of corruption over the
Blender window (it's painting the desktop instead of the Blender window
contents).

I'm running on a Dell Inspiron 9400 with a Radeon Mobility X1400 using
the default graphics driver (not fglrx).

* Version Information

> lsb_release -rd
Description:	Ubuntu 9.04
Release:	9.04

> uname -r
2.6.28-11-generic

> apt-cache policy blender
blender:
  Installed: 2.48a+dfsg-1ubuntu3
  Candidate: 2.48a+dfsg-1ubuntu3
  Version table:
 *** 2.48a+dfsg-1ubuntu3 0
        500 http://archive.ubuntu.com jaunty/universe Packages
        100 /var/lib/dpkg/status

> lspci -v
...
01:00.0 VGA compatible controller: ATI Technologies Inc Radeon Mobility X1400
	Subsystem: Dell Device 2002
	Flags: bus master, fast devsel, latency 0, IRQ 16
	Memory at c0000000 (32-bit, prefetchable) [size=256M]
	I/O ports at ee00 [size=256]
	Memory at dfdf0000 (32-bit, non-prefetchable) [size=64K]
	Expansion ROM at dfe00000 [disabled] [size=128K]
	Capabilities: <access denied>
...

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


** Tags: ati blender opengl x1400

-- 
Blender - OpenGL windows behaving badly; incorrect repainting and screen corruption
https://bugs.launchpad.net/bugs/374307
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