Since a year I noticed strange black and white patterns shown on my Cinema Display 30 and strange noise pattern on the secondary Philips monitor during startup. I have a 3.1 MacPro w. ATI Radeon HD 2600 video card, and I am using Mac OSX 10.6.8.
I have tried several software solutions, and PRAM reset as well. Unfortunately the problem still occurs.
Mac Pro, Mac OS X (10.6.8)
What is shown on the display is often a window into the display memory. Patterns such as the ones you are seeing may indicate that the RAM on the display card is failing.
The Apple-brand ATI 5770 is a good replacement card, and as long as you are running 10.6.5 or later, seems to work in all models MacPro.
What is shown on the display is often a window into the display memory. Patterns such as the ones you are seeing may indicate that the RAM on the display card is failing.
The Apple-brand ATI 5770 is a good replacement card, and as long as you are running 10.6.5 or later, seems to work in all models MacPro.
Strange patterns during startup
