https://bugs.freedesktop.org/show_bug.cgi?id=107095
--- Comment #4 from kyle.devir@mykolab.com --- You aren't alone.
I get the wonderful "GPU fault detected: 147" error with dolphin-emu. Turns out that using mogrify with OpenCL backend causes lockups also. Anything OpenCL-related in fact.
Frustrating and annoying.
I bet the devs are trying to find a solution, for months, but have had trouble narrowing down this strange bug, or a related set of bugs.