> After waking from sleep and running a process using hardware accelerated video decoding / encoding, the UI will freeze for a couple of seconds, then starts working again, then freezes again, and so on. The mouse can still be moved but the UI is non-responsive. Eventually, after waiting for long enough, a kernel panic occurs and the machine reboots.
How to reproduce:
1. Use any Navi10 or Navi14 graphics card inside a Mac Pro 2019, eGPU case or use a MacBook Pro 16.
2. Open Video Proc or any other app utilizing hardware video acceleration (e.g. Safari playing Youtube, exporting with FCPX / iMovie).
3. Run the video acceleration test in Video Proc, start playing a H.264 / H.265 video in Safari or export a H.264 / H.265 file from FCPX / iMovie.
4. Put the machine to sleep.
5. Wake it again and re-test video acceleration.
6. If machine doesn't freeze, repeat the cycle from step 4.
7. Repeat this until the UI starts freezing / video acceleration stops working.
8. Eventually the machine will kernel panic after several minutes.
Re:macOS Catalina 10.15.5
by ngcazz on Wednesday May 27, 2020 @03:22PM
(#23328527)
I’ve had this happen on my work MBP (13” non-touch bar, BT magic keyboard and trackpad and HDMI monitor connected via a cheap USB-C hub) a handful of times. Really have no idea what motivated it.
https://forums.macrumors.com/threads/constant-kernel-panics-...
> After waking from sleep and running a process using hardware accelerated video decoding / encoding, the UI will freeze for a couple of seconds, then starts working again, then freezes again, and so on. The mouse can still be moved but the UI is non-responsive. Eventually, after waiting for long enough, a kernel panic occurs and the machine reboots.
How to reproduce:
1. Use any Navi10 or Navi14 graphics card inside a Mac Pro 2019, eGPU case or use a MacBook Pro 16.
2. Open Video Proc or any other app utilizing hardware video acceleration (e.g. Safari playing Youtube, exporting with FCPX / iMovie).
3. Run the video acceleration test in Video Proc, start playing a H.264 / H.265 video in Safari or export a H.264 / H.265 file from FCPX / iMovie.
4. Put the machine to sleep.
5. Wake it again and re-test video acceleration.
6. If machine doesn't freeze, repeat the cycle from step 4.
7. Repeat this until the UI starts freezing / video acceleration stops working.
8. Eventually the machine will kernel panic after several minutes.