https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3703/shard-hsw8/igt@kms_cursor_legacy@2x-long-flip-vs-cursor-legacy.html (kms_cursor_legacy:6027) CRITICAL: Test assertion failure function two_screens_flip_vs_cursor, file kms_cursor_legacy.c:976: (kms_cursor_legacy:6027) CRITICAL: Failed assertion: vbl.sequence == vblank_start + 1 (kms_cursor_legacy:6027) CRITICAL: Last errno: 25, Inappropriate ioctl for device (kms_cursor_legacy:6027) CRITICAL: error: 18197 != 18196 Subtest 2x-long-flip-vs-cursor-legacy failed.
https://intel-gfx-ci.01.org/tree/drm-tip/IGT_4210/shard-hsw1/igt@kms_cursor_legacy@2x-long-flip-vs-cursor-atomic.html (kms_cursor_legacy:7786) CRITICAL: Test assertion failure function two_screens_flip_vs_cursor, file kms_cursor_legacy.c:976: (kms_cursor_legacy:7786) CRITICAL: Failed assertion: vbl.sequence == vblank_start + 1 (kms_cursor_legacy:7786) CRITICAL: Last errno: 25, Inappropriate ioctl for device (kms_cursor_legacy:7786) CRITICAL: error: 31890 != 31889 Subtest 2x-long-flip-vs-cursor-atomic failed.
This tests has failing on CNL QA Tests List: igt@kms_cursor_legacy@2x-long-flip-vs-cursor-legacy output sample: . . . (kms_cursor_legacy:834) CRITICAL: Test assertion failure function two_screens_flip_vs_cursor, file kms_cursor_legacy.c:976: (kms_cursor_legacy:834) CRITICAL: Failed assertion: vbl.sequence == vblank_start + 1 (kms_cursor_legacy:834) CRITICAL: Last errno: 25, Inappropriate ioctl for device (kms_cursor_legacy:834) CRITICAL: error: 364 != 363 (kms_cursor_legacy:834) igt-core-INFO: Stack trace: (kms_cursor_legacy:834) igt-core-INFO: #0 [__igt_fail_assert+0x101] (kms_cursor_legacy:834) igt-core-INFO: #1 [two_screens_flip_vs_cursor+0x85c] (kms_cursor_legacy:834) igt-core-INFO: #2 [<unknown>+0x85c] . . . software: IGT-Version: 1.21-g68fb759 (x86_64) (Linux: 4.16.0-rc4-drm-intel-qa-ww10-commit-a994c52+ x86_64)
Created attachment 137831 [details] kernel log (CNL QA)
Created attachment 137832 [details] dmesg -w (CNL QA)
Interesting, now also on 2X machine CFL-s2 https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3903/fi-cfl-s2/igt@kms_cursor_legacy@2x-long-flip-vs-cursor-legacy.html (kms_cursor_legacy:1984) CRITICAL: Test assertion failure function two_screens_flip_vs_cursor, file kms_cursor_legacy.c:976: (kms_cursor_legacy:1984) CRITICAL: Failed assertion: vbl.sequence == vblank_start + 1 (kms_cursor_legacy:1984) CRITICAL: Last errno: 25, Inappropriate ioctl for device (kms_cursor_legacy:1984) CRITICAL: error: 6793 != 6792 Subtest 2x-long-flip-vs-cursor-legacy failed.
This tests was failing on CNL QA Test list: igt@kms_cursor_legacy@2x-long-flip-vs-cursor-atomic igt@kms_cursor_legacy@2x-long-flip-vs-cursor-legacy igt@kms_cursor_legacy@2x-nonblocking-modeset-vs-cursor-atomic output sample: . . . (kms_cursor_legacy:1570) CRITICAL: Test assertion failure function two_screens_flip_vs_cursor, file kms_cursor_legacy.c:976: (kms_cursor_legacy:1570) CRITICAL: Failed assertion: vbl.sequence == vblank_start + 1 (kms_cursor_legacy:1570) CRITICAL: error: 6796 != 6795 Subtest 2x-long-flip-vs-cursor-atomic failed. . . . software: IGT-Version: 1.22-g2ef96ec (x86_64) (Linux: 4.16.0-rc7-drm-tip-ww15-commit-d123888+ x86_64)
https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_18/fi-cfl-s3/igt@kms_cursor_legacy@2x-flip-vs-cursor-atomic.html (kms_cursor_legacy:3181) CRITICAL: Test assertion failure function two_screens_flip_vs_cursor, file ../tests/kms_cursor_legacy.c:976: (kms_cursor_legacy:3181) CRITICAL: Failed assertion: vbl.sequence == vblank_start + 1 (kms_cursor_legacy:3181) CRITICAL: Last errno: 25, Inappropriate ioctl for device (kms_cursor_legacy:3181) CRITICAL: error: 13435 != 13434 Subtest 2x-flip-vs-cursor-atomic failed.
https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_42/fi-skl-6770hq/igt@kms_cursor_legacy@2x-long-flip-vs-cursor-atomic.html (kms_cursor_legacy:1796) CRITICAL: Test assertion failure function two_screens_flip_vs_cursor, file ../tests/kms_cursor_legacy.c:976: (kms_cursor_legacy:1796) CRITICAL: Failed assertion: vbl.sequence == vblank_start + 1 (kms_cursor_legacy:1796) CRITICAL: Last errno: 25, Inappropriate ioctl for device (kms_cursor_legacy:1796) CRITICAL: error: 12435 != 12434 Subtest 2x-long-flip-vs-cursor-atomic failed.
A CI Bug Log filter associated to this bug has been updated: {- HSW,SKL,KBL,GLK,CFL: igt@kms_cursor_legacy@2x-(long-)flip-vs-cursor-* - Failed assertion: vbl.sequence == vblank_start + 1 -} {+ ILK HSW,SKL,KBL,GLK,CFL: igt@kms_cursor_legacy@2x-(long-)flip-vs-cursor-* - Failed assertion: vbl.sequence == vblank_start + 1 +} New failures caught by the filter: * https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_179/fi-ilk-650/igt@kms_cursor_legacy@2x-flip-vs-cursor-legacy.html
A CI Bug Log filter associated to this bug has been updated: {- ILK HSW,SKL,KBL,GLK,CFL: igt@kms_cursor_legacy@2x-(long-)flip-vs-cursor-* - Failed assertion: vbl.sequence == vblank_start + 1 -} {+ ILK, HSW,SKL,KBL,GLK,CFL: igt@kms_cursor_legacy@2x-(long-)flip-vs-cursor-* - Failed assertion: vbl.sequence == vblank_start + 1 +} No new failures caught with the new filter
A CI Bug Log filter associated to this bug has been updated: {- ILK, HSW,SKL,KBL,GLK,CFL: igt@kms_cursor_legacy@2x-(long-)flip-vs-cursor-* - Failed assertion: vbl.sequence == vblank_start + 1 -} {+ ILK, HSW,SKL,KBL,GLK,CFL: igt@kms_cursor_legacy@2x-(long-)flip-vs-cursor-* - Failed assertion: vbl.sequence == vblank_start + 1 +} New failures caught by the filter: * https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_198/fi-icl-u2/igt@kms_cursor_legacy@2x-long-flip-vs-cursor-atomic.html
A CI Bug Log filter associated to this bug has been updated: {- ILK, HSW,SKL,KBL,GLK,CFL: igt@kms_cursor_legacy@2x-(long-)flip-vs-cursor-* - Failed assertion: vbl.sequence == vblank_start + 1 -} {+ ILK, HSW,SKL,KBL,GLK,CFL, ICL: igt@kms_cursor_legacy@2x-(long-)flip-vs-cursor-* - Failed assertion: vbl.sequence == vblank_start + 1 +} No new failures caught with the new filter
Also seen on ICL https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_198/fi-icl-u2/igt@kms_cursor_legacy@2x-long-flip-vs-cursor-atomic.html
A CI Bug Log filter associated to this bug has been updated: {- ILK, HSW,SKL,KBL,GLK,CFL, ICL: igt@kms_cursor_legacy@2x-(long-)flip-vs-cursor-* - Failed assertion: vbl.sequence == vblank_start + 1 -} {+ BWR, ILK, HSW,SKL,KBL,GLK,CFL, ICL: igt@kms_cursor_legacy@2x-(long-)flip-vs-cursor-* - Failed assertion: vbl.sequence == vblank_start + 1 +} New failures caught by the filter: * https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_248/fi-bwr-2160/igt@kms_cursor_legacy@2x-long-flip-vs-cursor-legacy.html
From Maarten: We try to make sure that when we do a page flip on a different screen, the cursor update is still simultaneous. What happens here is that we are probably too strict and sometimes miss a pageflip and it then takes 2 vblanks. This can happen in userspace too. I wouldn't say this has a high impact. It's very likely that disabling all power saving features would result in not seeing this bug, because a source of random delays is removed.
A CI Bug Log filter associated to this bug has been updated: {- BWR, ILK, HSW,SKL,KBL,GLK,CFL, ICL: igt@kms_cursor_legacy@2x-(long-)flip-vs-cursor-* - Failed assertion: vbl.sequence == vblank_start + 1 -} {+ BWR, ILK, HSW,SKL,KBL,GLK,CFL, CML, ICL: igt@kms_cursor_legacy@2x-(long-)flip-vs-cursor-* - Failed assertion: vbl.sequence == vblank_start + 1 +} New failures caught by the filter: * https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_328/fi-cml-u2/igt@kms_cursor_legacy@2x-flip-vs-cursor-legacy.html
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