[CI][HSW only] *ERROR* PCH transcoder A FIFO underrun | *ERROR* uncleared pch fifo underrun on pch transcoder A

Submitted by Martin Peres @mupuf

Assigned to Intel GFX Bugs mailing list

Link to original bug (#102614)

Description

When running CI_DRM_3056, the machine shard-hsw generated the following dmesg when running igt@kms_flip@basic-flip-vs-dpms:

[ 22.635021] [drm:intel_set_pch_fifo_underrun_reporting [i915]] ERROR uncleared pch fifo underrun on pch transcoder A
[ 22.635097] [drm:intel_pch_fifo_underrun_irq_handler [i915]] ERROR PCH transcoder A FIFO underrun

Full logs: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3056/shard-hsw3/igt@kms_flip@basic-flip-vs-dpms.html

Blocking

• Bug 105980

See also

• https://bugs.freedesktop.org/show_bug.cgi?id=104934

added CI feature: display/watermark platform: HSW priority::high severity::normal + 1 deleted label

Marta Löfstedt @marta closed a related bug:

*** Bug 102706 has been marked as a duplicate of this bug. ***

Marta Löfstedt @marta said:

This has now be caught on 4 tests:
igt@kms_flip@basic-flip-vs-dpms
igt@kms_flip@dpms-off-confusion
igt@kms_flip@wf_vblank-vs-dpms
igt@kms_flip@wf_vblank-vs-modeset

more data:
https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3101/shard-hsw5/igt@kms_flip@dpms-off-confusion.html

Marta Löfstedt @marta said:

Now also on the subtest:
igt@kms_flip@wf_vblank-vs-dpms-interruptible

https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3163/shard-hsw5/igt@kms_flip@wf_vblank-vs-dpms-interruptible.html

Marta Löfstedt @marta said:

Also, on subtest:
rcs-wf_vblank-vs-modeset-interruptible
see:
https://patchwork.freedesktop.org/series/31305/

Marta Löfstedt @marta said:

https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3352/shard-hsw5/igt@kms_flip@rcs-wf_vblank-vs-dpms-interruptible.html


[ 511.608785] [drm:intel_set_pch_fifo_underrun_reporting [i915]] ERROR uncleared pch fifo underrun on pch transcoder A
[ 511.608813] [drm:cpt_irq_handler [i915]] ERROR PCH transcoder A FIFO underrun

Marta Löfstedt @marta said:

https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3358/shard-hsw5/igt@kms_plane@plane-panning-top-left-pipe-c-planes.html

(kms_plane:4191) igt-debugfs-CRITICAL: Test assertion failure function igt_assert_crc_equal, file igt_debugfs.c:353:
(kms_plane:4191) igt-debugfs-CRITICAL: Failed assertion: !mismatch
Subtest plane-panning-top-left-pipe-C-planes failed.

[ 315.397653] [drm:intel_set_pch_fifo_underrun_reporting [i915]] ERROR uncleared pch fifo underrun on pch transcoder A
[ 315.397705] [drm:cpt_irq_handler [i915]] ERROR PCH transcoder A FIFO underrun

Marta Löfstedt @marta said:

https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3359/shard-hsw5/igt@kms_flip@flip-vs-modeset-interruptible.html


[ 244.342563] [drm:intel_set_pch_fifo_underrun_reporting [i915]] ERROR uncleared pch fifo underrun on pch transcoder A
[ 244.342651] [drm:cpt_irq_handler [i915]] ERROR PCH transcoder A FIFO underrun

Marta Löfstedt @marta said:

https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3377/shard-hsw5/igt@kms_flip@blt-flip-vs-panning-interruptible.html

[ 208.888963] [drm:intel_set_pch_fifo_underrun_reporting [i915]] ERROR uncleared pch fifo underrun on pch transcoder A
[ 208.889016] [drm:cpt_irq_handler [i915]] ERROR PCH transcoder A FIFO underrun
[ 211.081133] [drm:intel_set_cpu_fifo_underrun_reporting [i915]] ERROR uncleared fifo underrun on pipe B
[ 211.081186] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] ERROR CPU pipe B FIFO underrun

Marta Löfstedt @marta said:

https://intel-gfx-ci.01.org/tree/drm-tip/IGT_4068/shard-hsw5/igt@kms_flip@rcs-wf_vblank-vs-modeset.html

[ 245.854988] [drm:intel_set_pch_fifo_underrun_reporting [i915]] ERROR uncleared pch fifo underrun on pch transcoder A
[ 245.855100] [drm:cpt_irq_handler [i915]] ERROR PCH transcoder A FIFO underrun

https://intel-gfx-ci.01.org/tree/drm-tip/IGT_4069/shard-hsw5/igt@kms_rotation_crc@cursor-rotation-180.html

[ 257.604823] [drm:intel_set_pch_fifo_underrun_reporting [i915]] ERROR uncleared pch fifo underrun on pch transcoder A
[ 257.604933] [drm:cpt_irq_handler [i915]] ERROR PCH transcoder A FIFO underrun

Marta Löfstedt @marta said:

https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3628/shard-hsw5/igt@kms_flip@flip-vs-dpms-off-vs-modeset.html

[ 13.083870] [drm:intel_set_pch_fifo_underrun_reporting [i915]] ERROR uncleared pch fifo underrun on pch transcoder A
[ 13.083937] [drm:cpt_irq_handler [i915]] ERROR PCH transcoder A FIFO underrun

Marta Löfstedt @marta said:

https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3636/shard-hsw5/igt@kms_flip@flip-vs-fences-interruptible.html

[ 46.259782] [drm:intel_set_pch_fifo_underrun_reporting [i915]] ERROR uncleared pch fifo underrun on pch transcoder A
[ 46.259808] [drm:cpt_irq_handler [i915]] ERROR PCH transcoder A FIFO underrun

Marta Löfstedt @marta said:

https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3645/shard-hsw5/igt@kms_flip@2x-blt-wf_vblank-vs-dpms.html

[ 383.119763] [drm:intel_set_pch_fifo_underrun_reporting [i915]] ERROR uncleared pch fifo underrun on pch transcoder A
[ 383.119827] [drm:cpt_irq_handler [i915]] ERROR PCH transcoder A FIFO underrun

Marta Löfstedt @marta said:

https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3683/shard-hsw5/igt@kms_flip@2x-flip-vs-modeset-interruptible.html

[ 598.216299] [drm:intel_set_pch_fifo_underrun_reporting [i915]] ERROR uncleared pch fifo underrun on pch transcoder A
[ 598.216326] [drm:cpt_irq_handler [i915]] ERROR PCH transcoder A FIFO underrun

Marta Löfstedt @marta said:

https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3813/shard-hsw5/igt@kms_vblank@pipe-c-wait-idle.html


[ 1314.660451] [drm:intel_set_pch_fifo_underrun_reporting [i915]] ERROR uncleared pch fifo underrun on pch transcoder A
[ 1314.660472] [drm:cpt_irq_handler [i915]] ERROR PCH transcoder A FIFO underrun

Marta Löfstedt @marta said:

https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3835/shard-hsw5/igt@kms_vblank@pipe-a-query-forked-busy-hang.html

from dmesg:
<7>[ 829.768537] missed_breadcrumb *
<7>[ 829.768549] missed_breadcrumb Idle? no
<7>[ 841.736597] [drm:i915_reset_device [i915]] resetting chip
<5>[ 841.736895] i915 0000:00:02.0: Resetting chip after gpu hang
<7>[ 841.737399] [drm:i915_gem_reset_engine [i915]] resetting rcs0 to restart from tail of request 0x3
<7>[ 841.737992] [drm:sandybridge_pcode_read [i915]] warning: pcode (read from mbox 5) mailbox access failed for intel_enable_gt_powersave [i915]: -6
<7>[ 841.738243] [drm:init_workarounds_ring [i915]] rcs0: Number of context specific w/a: 0
...
<3>[ 841.840039] [drm:intel_set_pch_fifo_underrun_reporting [i915]] ERROR uncleared pch fifo underrun on pch transcoder A
<3>[ 841.840280] [drm:cpt_irq_handler [i915]] ERROR PCH transcoder A FIFO underrun

Marta Löfstedt @marta said:

https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3883/shard-hsw5/igt@kms_busy@extended-modeset-hang-newfb-render-b.html

[ 607.100851] [drm:intel_set_pch_fifo_underrun_reporting [i915]] ERROR uncleared pch fifo underrun on pch transcoder A
[ 607.100904] [drm:cpt_irq_handler [i915]] ERROR PCH transcoder A FIFO underrun

Marta Löfstedt @marta said:

https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3887/shard-hsw5/igt@kms_vblank@pipe-b-wait-idle.html

[ 1110.735788] [drm:intel_set_pch_fifo_underrun_reporting [i915]] ERROR uncleared pch fifo underrun on pch transcoder A
[ 1110.735836] [drm:cpt_irq_handler [i915]] ERROR PCH transcoder A FIFO underrun

Marta Löfstedt @marta said:

https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3887/shard-hsw5/igt@kms_cursor_legacy@cursorb-vs-flipa-varying-size.html

[ 1116.078311] [drm:intel_set_cpu_fifo_underrun_reporting [i915]] ERROR uncleared fifo underrun on pipe A
[ 1116.078706] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] ERROR CPU pipe A FIFO underrun

Marta Löfstedt @marta said:

https://intel-gfx-ci.01.org/tree/drm-tip/IGT_4360/shard-hsw5/igt@kms_atomic_transition@1x-modeset-transitions-nonblocking.html

[ 1184.609072] [drm:intel_set_pch_fifo_underrun_reporting [i915]] ERROR uncleared pch fifo underrun on pch transcoder A
[ 1184.609089] [drm:cpt_irq_handler [i915]] ERROR PCH transcoder A FIFO underrun