I have rectangular black dots in the top left corner of my screen. They blink on and off periodically, and sometimes they turn white. However, they never go away for more than around 3 seconds. Here’s a screenshot where you can distinctly see the scattered rectangular marks in the top left corner of the screen.
I am running Ubuntu 12.10. I’m using the driver provided by the nvidia installer, not the driver provided by my distribution.
- Intel Core i5-2500k
- EVGA GeForce GTX 570 HD (012-P3-1571-KR)
Steps to reproduce:
- Start computer