Bug 83180 - [HSW Regression]igt/kms_plane some subcases cause "[drm:ivybridge_set_fifo_underrun_reporting] *ERROR* uncleared fifo underrun on pipe A"
Summary: [HSW Regression]igt/kms_plane some subcases cause "[drm:ivybridge_set_fifo_un...
Status: CLOSED FIXED
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/Intel (show other bugs)
Version: unspecified
Hardware: Other All
: high normal
Assignee: Intel GFX Bugs mailing list
QA Contact: Intel GFX Bugs mailing list
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2014-08-28 08:27 UTC by Guo Jinxian
Modified: 2016-10-28 09:57 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:

Attachments
dmesg (116.34 KB, text/plain)
2014-08-28 08:27 UTC, Guo Jinxian 		no flags Details
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Description Guo Jinxian 2014-08-28 08:27:53 UTC 
Created attachment 105373 [details]
dmesg

==System Environment==
--------------------------
Regression: Yes. 
Good commit on -next-queued: 3a5f87c286515c54ff5c52c3e64d0c522b7570c0

Non-working platforms: HSW

==kernel==
--------------------------
origin/drm-intel-nightly: e91331cf71c509af3dfae75cd9bca3db13d7da95(fails)
    drm-intel-nightly: 2014y-08m-27d-21h-32m-10s integration manifest
origin/drm-intel-next-queued: 661ccef518a23dd6b3aff11ca6eee9c71568f37a(works)
    drm/i915/bdw: BDW Software Turbo
origin/drm-intel-fixes: 813008cd3e93ea8a571b2b7d5b9360a3105b50f7(fails)
    drm/i915: don't warn if backlight unexpectedly enabled

==Bug detailed description==
igt/kms_plane some subcases cause "[drm:ivybridge_set_fifo_underrun_reporting] *ERROR* uncleared fifo underrun on pipe A"

Case list:
igt/kms_plane/plane-position-covered-pipe-A-plane-1
igt/kms_plane/plane-position-covered-pipe-C-plane-1

Output:
[root@x-hsw24 tests]# ./kms_plane --run-subtest plane-position-covered-pipe-A-plane-1
IGT-Version: 1.7-g50166d2 (x86_64) (Linux: 3.16.0_drm-intel-next-queued_661cce_20140828+ x86_64)
Testing connector VGA-1 using pipe A plane 1
Subtest plane-position-covered-pipe-A-plane-1: SUCCESS
[root@x-hsw24 tests]# dmesg -r|egrep ""<[1-4]>""|grep drm
<3>[  114.145642] [drm:ivybridge_set_fifo_underrun_reporting] *ERROR* uncleared fifo underrun on pipe A
<3>[  114.145643] [drm:ivb_err_int_handler] *ERROR* Pipe A FIFO underrun
<3>[  114.145650] [drm:cpt_set_fifo_underrun_reporting] *ERROR* uncleared pch fifo underrun on pch transcoder A
<3>[  114.145650] [drm:cpt_serr_int_handler] *ERROR* PCH transcoder A FIFO underrun


==Reproduce steps==
---------------------------- 
1. ./kms_plane --run-subtest plane-position-covered-pipe-A-plane-1
Comment 1 Jani Nikula 2014-09-12 13:37:28 UTC 
Does the laptop have a 4k display? Does i915.enable_ips=0 help?
Comment 2 Guo Jinxian 2014-09-15 02:49:05 UTC 
Test passes on latest -nightly(43df30da20447e2856b2761215ff274886a9f931)

[root@x-hsw24 tests]# ./kms_plane --run-subtest plane-position-covered-pipe-A-plane-1
IGT-Version: 1.8-g137877f (x86_64) (Linux: 3.17.0-rc4_drm-intel-nightly_43df30_20140914+ x86_64)
Testing connector VGA-1 using pipe A plane 1
Subtest plane-position-covered-pipe-A-plane-1: SUCCESS (0.960s)
[root@x-hsw24 tests]# echo $?
0
[root@x-hsw24 tests]# dmesg -r|egrep "<[1-4]>"|grep drm
[root@x-hsw24 tests]#
Comment 3 Jari Tahvanainen 2016-10-06 07:37:18 UTC 
Closing verified+fixed

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