Comment 6 for bug 1850876

Thanks for the new kernel. I booted it and noted that the right drivers were now being used ( Accelerated video and glxinfo showing it was using VC4 rather than the original llvmpipe. However:

1) On Mate, the Pi locked up within a few seconds of resizing windows
2) On Ubuntu, it took a few minutes but again the machine locked up after using applications.

Ahead of failures, areas of the screens were flashing/jittering. Once locked, only a reboot would gain control of the console.

4GB Pi 4, all 64bit kernels - rock solid without acceleration on the former kernel, rock solid WITH acceleration when using Gentoo.

I reverted to the older kernel and the machine is back to being stable, albeit with out the acceleration.