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RKL : igt@kms_frontbuffer_tracking@fbc - * - dmesg-fail|warn- *ERROR* CPU pipe A FIFO underrun ; exiting, ret=98

    • Closed Issue created by Jaswanth kattamanchi @jaswanth

    https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_9003/re-rkl-1/igt@kms_frontbuffer_tracking@fbc-1p-primscrn-pri-shrfb-draw-mmap-cpu.html#dmesg-warnings896

    • Out
    • IGT-Version: 1.25-g66766dd7c (x86_64) (Linux: 5.9.0-rc4-CI-CI_DRM_9003+ x86_64)
    • FBC last action not supported
    • Can't test DRRS: Not supported.
    • Starting subtest: fbc-1p-primscrn-pri-shrfb-draw-mmap-cpu
    • Stack trace:
    • #0 ../lib/igt_core.c:1727 __igt_fail_assert()
    • #1 (moved) ../lib/igt_debugfs.c:433 igt_assert_crc_equal()
    • #2 ../tests/kms_frontbuffer_tracking.c:1585 do_crc_assertions()
    • #3 (moved) ../tests/kms_frontbuffer_tracking.c:1665 __do_assertions()
    • #4 (moved) ../tests/kms_frontbuffer_tracking.c:1846 prepare_subtest_screens()
    • #5 (closed) ../tests/kms_frontbuffer_tracking.c:1994 draw_subtest()
    • #6 (closed) ../tests/kms_frontbuffer_tracking.c:3382 __real_main3354()
    • #7 (closed) ../tests/kms_frontbuffer_tracking.c:3354 main()
    • #8 (closed) ../csu/libc-start.c:344 __libc_start_main()
    • #9 (closed) [_start+0x2a]
    • Subtest fbc-1p-primscrn-pri-shrfb-draw-mmap-cpu: FAIL (2.315s)
    • Dmesg warn:
    • <3> [548.716590] i915 0000:00:02.0: [drm] ERROR CPU pipe A FIFO underrun
    • <7> [548.716740] i915 0000:00:02.0: [drm:intel_fbc_underrun_work_fn [i915]] Disabling FBC due to FIFO underrun.
    • <7> [548.740683] i915 0000:00:02.0: [drm:skl_compute_wm [i915]] [PLANE:31:plane 1A] ddb ( 0 - 2016) -> ( 0 - 0), size 2016 -> 0
    • <7> [548.740718] i915 0000:00:02.0: [drm:skl_compute_wm [i915]] [PLANE:31:plane 1A] level *wm0,*wm1,*wm2,*wm3,*wm4,*wm5,*wm6,*wm7,*twm,*swm -> wm0, wm1, wm2, wm3, wm4, wm5, wm6, wm7, twm, swm
    • <7> [548.740752] i915 0000:00:02.0: [drm:skl_compute_wm [i915]] [PLANE:31:plane 1A] lines 1, 2, 2, 2, 3, 5, 7, 7, 0, 1 -> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
    • <7> [548.740807] i915 0000:00:02.0: [drm:skl_compute_wm [i915]] [PLANE:31:plane 1A] blocks 5, 33, 33, 33, 49, 81, 113, 113, 19, 5 -> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
    • <7> [548.740841] i915 0000:00:02.0: [drm:skl_compute_wm [i915]] [PLANE:31:plane 1A] min_ddb 7, 38, 38, 38, 55, 91, 126, 126, 0, 7 -> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
    • <7> [548.740900] i915 0000:00:02.0: [drm:intel_bw_atomic_check [i915]] pipe A data rate 0 num active planes 0
    • <7> [548.740955] i915 0000:00:02.0: [drm:intel_bw_atomic_check [i915]] QGV point 0: max bw 20000 required 0
    • <7> [548.746806] i915 0000:00:02.0: [drm:gen8_de_irq_handler [i915]] hotplug event received, stat 0x00010000, dig 0x00000889, pins 0x00000010, long 0x00000000
    • <7> [548.746864] i915 0000:00:02.0: [drm:intel_hpd_irq_handler [i915]] digital hpd on [ENCODER:166:DDI A] - short
    • <7> [548.746983] i915 0000:00:02.0: [drm:intel_dp_hpd_pulse [i915]] got hpd irq on [ENCODER:166:DDI A] - short
    • <7> [548.747583] [drm:drm_dp_read_dpcd_caps] AUX A/port A: DPCD: 14 00 c2 41 00 00 01 c0 02 00 00 00 00 0b 00
    • <7> [548.752280] i915 0000:00:02.0: [drm:gen8_de_irq_handler [i915]] hotplug event received, stat 0x00010000, dig 0x00000889, pins 0x00000010, long 0x00000000
    • <7> [548.752335] i915 0000:00:02.0: [drm:intel_hpd_irq_handler [i915]] digital hpd on [ENCODER:166:DDI A] - short
    • <7> [548.752487] i915 0000:00:02.0: [drm:intel_dp_hpd_pulse [i915]] got hpd irq on [ENCODER:166:DDI A] - short
    • <7> [548.753123] [drm:drm_dp_read_dpcd_caps] AUX A/port A: DPCD: 14 00 c2 41 00 00 01 c0 02 00 00 00 00 0b 00
    • <6> [548.766367] [IGT] kms_frontbuffer_tracking: exiting, ret=98
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