When the freeze occurs, MIR_CLIENT_PERF_REPORT=log in the affected client shows the client is then seeing only two buffers despite Mir being configured for triple buffers. So it would appear the problem might be QtMir failing to release the one that's on screen.
When the freeze occurs, MIR_CLIENT_ PERF_REPORT= log in the affected client shows the client is then seeing only two buffers despite Mir being configured for triple buffers. So it would appear the problem might be QtMir failing to release the one that's on screen.