Hi Same issue in RPi 2 running linux 4.1.6 with PREEMPT_RT_FULL. Kodi-video playback gives skipped frames and freezes after a few minutes which does not happen when rt is disabled (with FIQ enabled or disabled, it does not matter). Turning off FIQ as suggested by Mikhail gives the expected behaviour for cyclictest and also prevents the freezes in kodi which is great, so thanks for that hint! However, I still get skipped frames in kodi. Is it possible there is another/related issue? Oliver -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html