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Re: [lkp] [drm/i915] 396e33ae20: [drm:intel_set_cpu_fifo_underrun_reporting [i915]] *ERROR* uncleared fifo underrun on pipe B

Started byWilliam Dauchy <wdauchy@gmail.com>
First post2016-03-17 11:50 +0100
Last post2016-03-17 15:30 +0100
Articles 3 — 2 participants

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  Re: [lkp] [drm/i915] 396e33ae20: [drm:intel_set_cpu_fifo_underrun_reporting  [i915]] *ERROR* uncleared fifo underrun on pipe B William Dauchy <wdauchy@gmail.com> - 2016-03-17 11:50 +0100
    Re: [lkp] [drm/i915] 396e33ae20:  [drm:intel_set_cpu_fifo_underrun_reporting [i915]] *ERROR* uncleared fifo  underrun on pipe B Maarten Lankhorst <maarten.lankhorst@linux.intel.com> - 2016-03-17 12:30 +0100
      Re: [lkp] [drm/i915] 396e33ae20: [drm:intel_set_cpu_fifo_underrun_reporting  [i915]] *ERROR* uncleared fifo underrun on pipe B William Dauchy <wdauchy@gmail.com> - 2016-03-17 15:30 +0100

#1359726 — Re: [lkp] [drm/i915] 396e33ae20: [drm:intel_set_cpu_fifo_underrun_reporting [i915]] *ERROR* uncleared fifo underrun on pipe B

FromWilliam Dauchy <wdauchy@gmail.com>
Date2016-03-17 11:50 +0100
SubjectRe: [lkp] [drm/i915] 396e33ae20: [drm:intel_set_cpu_fifo_underrun_reporting [i915]] *ERROR* uncleared fifo underrun on pipe B
Message-ID<rdDF8-6fy-7@gated-at.bofh.it>
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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#1359748 — Re: [lkp] [drm/i915] 396e33ae20: [drm:intel_set_cpu_fifo_underrun_reporting [i915]] *ERROR* uncleared fifo underrun on pipe B

FromMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Date2016-03-17 12:30 +0100
SubjectRe: [lkp] [drm/i915] 396e33ae20: [drm:intel_set_cpu_fifo_underrun_reporting [i915]] *ERROR* uncleared fifo underrun on pipe B
Message-ID<rdEhQ-6LW-13@gated-at.bofh.it>
In reply to#1359726
Op 17-03-16 om 11:49 schreef William Dauchy:
> 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?
>
Does it happen with latest -nightly?

~Maarten

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#1359909

FromWilliam Dauchy <wdauchy@gmail.com>
Date2016-03-17 15:30 +0100
Message-ID<rdH63-6P-51@gated-at.bofh.it>
In reply to#1359748
Hi Maarten,

Thank you for your quick reply.

On Thu, Mar 17, 2016 at 12:27 PM, Maarten Lankhorst
<maarten.lankhorst@linux.intel.com> wrote:
> Does it happen with latest -nightly?

The issue is indeed fixed in last linux.git, so there must be a fix
which is not yet backported in -stable. Could you point it to me? I
may ask for -stable inclusion (or wait for it if it's already tagged
as -stable)

Thanks,
-- 
William

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