On Mon, Jan 11, 2016 at 2:35 AM, kernel test robot
<ying.hu...@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
