Bug 107558 - [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
Summary: [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO unde...
Status: NEW
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/Intel (show other bugs)
Version: XOrg git
Hardware: Other All
: low normal
Assignee: Intel GFX Bugs mailing list
QA Contact: Intel GFX Bugs mailing list
URL:
Whiteboard: Triaged, ReadyForDev
Keywords:
Depends on:
Blocks: 105980
  Show dependency treegraph
 
Reported: 2018-08-13 12:00 UTC by Cristian Aravena
Modified: 2019-07-15 06:24 UTC (History)
1 user (show)

See Also:
i915 platform: SNB
i915 features: display/watermark


Attachments
dmesg_4.18.0-041800-generic (60.57 KB, text/plain)
2018-08-13 12:00 UTC, Cristian Aravena
no flags Details
#lspci_-vvnn.txt (20.87 KB, text/plain)
2018-08-13 12:01 UTC, Cristian Aravena
no flags Details
dpkg_-l (454.30 KB, text/plain)
2018-08-13 12:01 UTC, Cristian Aravena
no flags Details

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Description Cristian Aravena 2018-08-13 12:00:38 UTC
Created attachment 141061 [details]
dmesg_4.18.0-041800-generic

Hello,

Message in kernel 4.18
[    2.951630] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
[    2.952273] [drm:intel_set_pch_fifo_underrun_reporting [i915]] *ERROR* uncleared pch fifo underrun on pch transcoder A
[    2.952336] [drm:intel_pch_fifo_underrun_irq_handler [i915]] *ERROR* PCH transcoder A FIFO underrun

Regards,
--
Cristian Aravena Romero (caravena)
Comment 1 Cristian Aravena 2018-08-13 12:01:02 UTC
Created attachment 141062 [details]
#lspci_-vvnn.txt
Comment 2 Cristian Aravena 2018-08-13 12:01:49 UTC
Created attachment 141063 [details]
dpkg_-l
Comment 3 Jani Saarinen 2018-08-13 12:40:15 UTC
Can you using latest drm-tip: https://cgit.freedesktop.org/drm-tip and send dmesg with drm.debug=0x1e log_buf_len=4M?
Comment 4 Cristian Aravena 2018-08-13 12:51:59 UTC
Hello,

It has the "drm-tip" package so that it is easier for me to manipulate it.

My distribution is ubuntu 18.10 (development branch)

Regards,
--
Cristian Aravena Romero (caravena)
Comment 5 Cristian Aravena 2018-08-13 13:35:27 UTC
Hello,

The message is random...

Regards,
--
Cristian Aravena Romero (caravena)
Comment 6 Jani Saarinen 2018-08-14 06:33:46 UTC
What you mean with message is random. It is not happening all the time? 
Please explain use case how you see this problem.
Comment 7 Cristian Aravena 2018-08-14 14:29:02 UTC
Hello Jani Saarinen,


> It is not happening all the time?

Exactly, sometimes it appears when the computer is restarted...


Regards,
--
Cristian Aravena Romero (caravena)
Comment 8 Lakshmi 2018-09-15 19:42:16 UTC
Cristian, Apart from this error, have you noticed any other issues casued by this error?
Comment 9 Cristian Aravena 2018-09-15 20:48:46 UTC
Hello Lakshmi,

It's just a message, nothing bad happens.

Best regards,
--
Cristian Aravena Romero (caravena)
Comment 10 Lakshmi 2019-07-15 06:24:39 UTC
Based on the impact, setting the priority to low.


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