Bug 89101 - [SKL]clean boot system report *ERROR* CPU pipe A FIFO underrun
Summary: [SKL]clean boot system report *ERROR* CPU pipe A FIFO underrun
Status: CLOSED INVALID
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/Intel (show other bugs)
Version: unspecified
Hardware: All Linux (All)
: high normal
Assignee: Intel GFX Bugs mailing list
QA Contact: Intel GFX Bugs mailing list
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2015-02-12 08:35 UTC by lu hua
Modified: 2016-10-10 10:36 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:

Attachments
dmesg (81.58 KB, text/plain)
2015-02-12 08:35 UTC, lu hua 		no flags Details
View All

Description lu hua 2015-02-12 08:35:53 UTC 
Created attachment 113395 [details]
dmesg

System Environment:
--------------------------
Regression: not sure

no-working platforms: SKL

==kernel==
--------------------------
drm-intel-nightly/2a579576e4c01799ec67264c9169e5adeadcc3ff
commit 2a579576e4c01799ec67264c9169e5adeadcc3ff
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Wed Feb 11 17:16:34 2015 +0100

    drm-intel-nightly: 2015y-02m-11d-16h-11m-28s UTC integration manifest

==Bug detailed description==
-----------------------------
clean boot system with drm-intel-nightly kernel., report *ERROR* CPU pipe A FIFO underrun 

root@x-skly06:/GFX/Test/Piglit/piglit# dmesg -r|egrep "<[1-4]>"|grep drm
<3>[    3.297286] [drm:gen8_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun

==Reproduce steps==
---------------------------- 
1. clean boot system
2. dmesg -r|egrep "<[1-4]>"|grep drm
Comment 1 Jani Nikula 2015-02-12 08:59:12 UTC 
What is this, all of a sudden plenty of reports with the INCORRECT i915.debug=0xe module parameter. It should be drm.debug=0xe as always. Please attach new dmesg.
Comment 2 lu hua 2015-02-13 02:56:30 UTC 
(In reply to Jani Nikula from comment #1)
> What is this, all of a sudden plenty of reports with the INCORRECT
> i915.debug=0xe module parameter. It should be drm.debug=0xe as always.
> Please attach new dmesg.

Sorry, incorrect parameter. add drm.debug=0xe, I don't meet this error.
Comment 3 Jari Tahvanainen 2016-10-10 10:36:27 UTC 
Closing verified+invalid

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.