forwarding a comment from an engineer: "During viewing the source code of radeon module, I found there is a bug [1] related to the dpm and clocks. So I decided to do some experiments. Tried to set different max_sclk and max_mclk to see if the issue is gone. 1. max_sclk: 70000, max_mclk: 75000 --> have the same issue 2. max_sclk: 50000, max_mclk: 60000 --> pass multi-run test (more than 50 runs) [1] https://bugs.freedesktop.org/show_bug.cgi?id=76490 "