Mac users are venting in online forums about frequent system crashes that began after they updated to macOS Catalina 10.15.4.

The crash reports are popping up on a number of online forums with most saying kernel panics seem to happen after attempting large file transfers.

Some iMac Pro units are subject to occasional hard crashes. The reasons are hard to pin down, but fingers are starting to point at the Apple T2 chip inside this computer. 

There’s also one in the 2018 MacBook Pro, and this new device is seemingly prone to the same problem.   

Some users of early 2009 iMacs who have upgraded to OS X Snow Leopard or higher are still reporting issues with a kernel issue that seems to be due to the Nvidia GeForce GT 130 graphics card that came with the machine, with nary a response from Apple proper. There’s a thread on Apple’s support discussion pages that is now around a year old that mentions the problem. According to the posters there, there was a faulty kernel extension released in one of the later Snow Leopard updates that can cause graphics glitches and even kernel panics when there’s a heavy load on the video card, like when playing games. Apple has not yet responded in the official forums.

Gizmodo reported today that their new MacBook Air was crashing something fierce. They turned to their own forums and the Apple Support forums and found that many other users of the MacBook Air also had the crashing issue. Both parties saw improvements when they stopped using Google’s star web browser, Chrome, but no one could be sure.

They even checked on the MacRumors forums, finding the same issue. Then, they heard from Google.