Dell Optiplex GX28O
P4 2.8GHz 1MB Cache w/ hyperthreading enabled
ATI 128MB PCI-Express Dual DVI Radeon X300
Windows XP SP1 or SP2
Don’t know what version of OpenGL is provided with the driver. GLInfo complains about a missing export in NTDLL.dll.
Users of a custom application can right-click on a view and create a secondary popup of the view. When hyperthreading is DISABLED everything works fine, minus some degradation in performance.
When hyperthreading is ENABLED, whoahh bessy. Only the most recently updated OpenGL window updates. The original window stops drawing. When windows are covered by other windows, the window’s client area is not redrawn producing phantom windows. As the application works, updates to background windows start bleeding through. It’s ugly.
Driver version is A00 and is the most recent provided by Dell. ATI doesn’t provide OEM drivers. Any ideas? Is this a driver problem, BIOS problem, OpenGL problem? Happens on both SP1 and SP2.