I owned a nMP, which is installed El Capitan 10.11.5
I have been having graphic issue. At first, I thought it is a GPU failure or some sort of video card issue at hardware level. After I have ran some hardware test and there was no any error pop up. There is no gpu error log in system log. I did reset smh and NVRAM.
Couple videos show sign of weird graphic issue.
The interesting thing is here.
I am be able to recreate the problem. It only happens when I open 2 applications. One application must be iTunes application. To recreate the problem, all I have to do is to expośe iTunes application with another application back and forward constantly. After that you will see that strange white and black box. It looks like a piece broken of another window application that I open it alongside with iTunes like in the videos.
Importantly, the problem is gone when I disable transparency (reduce transparency in accessibility setting).
Now, I don't know it is my video cards, or bugs of OS level or driver.
At this point, what should I do? What do you think?
I have been having graphic issue. At first, I thought it is a GPU failure or some sort of video card issue at hardware level. After I have ran some hardware test and there was no any error pop up. There is no gpu error log in system log. I did reset smh and NVRAM.
Couple videos show sign of weird graphic issue.
The interesting thing is here.
I am be able to recreate the problem. It only happens when I open 2 applications. One application must be iTunes application. To recreate the problem, all I have to do is to expośe iTunes application with another application back and forward constantly. After that you will see that strange white and black box. It looks like a piece broken of another window application that I open it alongside with iTunes like in the videos.
Importantly, the problem is gone when I disable transparency (reduce transparency in accessibility setting).
Now, I don't know it is my video cards, or bugs of OS level or driver.
At this point, what should I do? What do you think?