OpenGL works only intermittently

[Tony_Bi...@adobeforums.com]

I'm using the trial version of CS4. Even though I'm using a low grade video board (Radeon X1300), the openGL features work - sometimes.

I can't figure out why, even though it is enabled in preferences, the graphics acceleration doesn't work. But at some other time it does work. Often I can rotate the canvas, or the animated zoom and flick pan and smooth odd magnification levels all work, and then not.

Is anyone else having this problem?

Thanks

[mal...@adobeforums.com]

Hi,
you have this problem when you open more files? I get a warning message when I open more then 10 files that opengl is for all files above 10 is disabled until the number of open files is 10 or less.

Regards
Matthias

[Tony_Bi...@adobeforums.com]

The problem I'm having is not dependent on how many files I have open at a time. It happens with one open.

[Myle...@adobeforums.com]

Sounds like a resource problem. The card seems to only do so many processing cycles and when its internal caches are filled, it doesn't flush them properly so no additional processing can happen. This possibly could be merely a driver problem where the graphics system is not receiving the correct commands or not interpreting PS' resource requests properly, so that would be something to look into...

Mylenium

[Tony_Bi...@adobeforums.com]

It very well could be a cache issue. After having made the initial post, and closing and reopening PS several times, the OpenGL features started working again.

Let's hope the programmers working on the new video drivers are paying attention to CS4's specifications.

Thanks all for your input.