FYI, we noticed the below changes on git://anongit.freedesktop.org/drm-intel drm-intel-next-queued commit 396e33ae204f52abebec9e578f44c749305500f4 ("drm/i915: Add two-stage ILK-style watermark programming (v10)") +--------------------------------------------------+------------+------------+ | | 2dfb0b816d | 396e33ae20 | +--------------------------------------------------+------------+------------+ | boot_successes | 8 | 19 | | boot_failures | 0 | 4 | | drm:intel_set_cpu_fifo_underrun_reporting[i915]] | 0 | 4 | | drm:intel_cpu_fifo_underrun_irq_handler[i915]] | 0 | 4 | | drm:intel_set_pch_fifo_underrun_reporting[i915]] | 0 | 4 | | drm:intel_pch_fifo_underrun_irq_handler[i915]] | 0 | 4 | +--------------------------------------------------+------------+------------+ [ 36.077826] NFS: Registering the id_resolver key type [ 36.078178] Key type id_resolver registered [ 36.078444] Key type id_legacy registered [ 60.884026] [drm:intel_set_cpu_fifo_underrun_reporting [i915]] *ERROR* uncleared fifo underrun on pipe B [ 60.884659] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun [ 60.885221] [drm:intel_set_pch_fifo_underrun_reporting [i915]] *ERROR* uncleared pch fifo underrun on pch transcoder B [ 60.885887] [drm:intel_pch_fifo_underrun_irq_handler [i915]] *ERROR* PCH transcoder B FIFO underrun [ 61.180651] random: nonblocking pool is initialized [ 81.430503] [drm:intel_set_cpu_fifo_underrun_reporting [i915]] *ERROR* uncleared fifo underrun on pipe C [ 81.431193] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe C FIFO underrun [ 81.431782] [drm:intel_set_pch_fifo_underrun_reporting [i915]] *ERROR* uncleared pch fifo underrun on pch transcoder C [ 81.432474] [drm:intel_pch_fifo_underrun_irq_handler [i915]] *ERROR* PCH transcoder C FIFO underrun To reproduce: git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git cd lkp-tests bin/lkp install job.yaml # job file is attached in this email bin/lkp run job.yaml Thanks, Kernel Test Robot