Messages in this thread | | | From | William Dauchy <> | Date | Thu, 17 Mar 2016 11:49:28 +0100 | Subject | Re: [lkp] [drm/i915] 396e33ae20: [drm:intel_set_cpu_fifo_underrun_reporting [i915]] *ERROR* uncleared fifo underrun on pipe B |
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On Mon, Jan 11, 2016 at 2:35 AM, kernel test robot <ying.huang@linux.intel.com> wrote: > 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
I am still triggering these errors on v4.4.6 Does anybody knows if there is a fix in queue? What can I do to help debug this issue?
Thanks, -- William
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