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Window goes blank intermittently, "Application firefox.exe has been blocked from accessing Graphics hardware"

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nottaw
nottaw

Several times a day, for no apparent reason, the Firefox window will go blank, as shown in the attached screenshots. It goes back to normal seemingly when I move my cursor. More rarely, when this happens, I get a Windows notification with the message "Application firefox.exe has been blocked from accessing Graphics hardware". I suspect the two things are related.

My graphics card might be relevant; it's an NVIDIA GeForce RTX 2070 SUPER.

Several times a day, for no apparent reason, the Firefox window will go blank, as shown in the attached screenshots. It goes back to normal seemingly when I move my cursor. More rarely, when this happens, I get a Windows notification with the message "Application firefox.exe has been blocked from accessing Graphics hardware". I suspect the two things are related. My graphics card might be relevant; it's an NVIDIA GeForce RTX 2070 SUPER.
Attached screenshots