Created attachment 108286 [details] dmesg ==System Environment== -------------------------- Regression: YES good commit: fff95501f2095fa8a9dbd7e177bbf642d241b2fe bad commit: 1577c3c641970550bf9c4038f152e33c5842804 Non-working platforms: BSW ==kernel== -------------------------- drm-intel-nightly/77683b77aa4da6e1788838dad2d2a15b0dfc290 ==Bug detailed description== ----------------------------- It fails on BSW with -nightly kernel and -queued kernel. It works well on -fixes kernel. output: IGT-Version: 1.8-g303fe74 (x86_64) (Linux: 3.17.0-rc5_drm-intel-next-queued_1577c3_20141023+ x86_64) Test assertion failure function test_flip_changes_tiling, file kms_flip_tiling.c:110: Failed assertion: igt_crc_equal(&reference_crc, &crc) Subtest flip-changes-tiling: FAIL (2.254s) ==Reproduce steps== ---------------------------- 1. ./kms_flip_tiling --run-subtest flip-changes-tiling
bisect pending
Retest on latest -nightly kernel, It sporadically fails. fail rate: 3/5 output: [root@x-bsw01 tests]# ./kms_flip_tiling --run-subtest flip-changes-tiling IGT-Version: 1.8-gddf0f09 (x86_64) (Linux: 3.18.0-rc6_drm-intel-nightly_0db9cf_20141201+ x86_64) Subtest flip-changes-tiling: SUCCESS (3.312s) [root@x-bsw01 tests]# ./kms_flip_tiling --run-subtest flip-changes-tiling IGT-Version: 1.8-gddf0f09 (x86_64) (Linux: 3.18.0-rc6_drm-intel-nightly_0db9cf_20141201+ x86_64) Test assertion failure function test_flip_changes_tiling, file kms_flip_tiling.c:110: Failed assertion: igt_crc_equal(&reference_crc, &crc) Subtest flip-changes-tiling: FAIL (2.463s) [root@x-bsw01 tests]# ./kms_flip_tiling --run-subtest flip-changes-tiling IGT-Version: 1.8-gddf0f09 (x86_64) (Linux: 3.18.0-rc6_drm-intel-nightly_0db9cf_20141201+ x86_64) Subtest flip-changes-tiling: SUCCESS (3.255s) [root@x-bsw01 tests]# ./kms_flip_tiling --run-subtest flip-changes-tiling IGT-Version: 1.8-gddf0f09 (x86_64) (Linux: 3.18.0-rc6_drm-intel-nightly_0db9cf_20141201+ x86_64) Test assertion failure function test_flip_changes_tiling, file kms_flip_tiling.c:110: Failed assertion: igt_crc_equal(&reference_crc, &crc) Subtest flip-changes-tiling: FAIL (2.470s) [root@x-bsw01 tests]# ./kms_flip_tiling --run-subtest flip-changes-tiling IGT-Version: 1.8-gddf0f09 (x86_64) (Linux: 3.18.0-rc6_drm-intel-nightly_0db9cf_20141201+ x86_64) Test assertion failure function test_flip_changes_tiling, file kms_flip_tiling.c:110: Failed assertion: igt_crc_equal(&reference_crc, &crc) Subtest flip-changes-tiling: FAIL (2.455s)
Please re-test with latest i-g-t. Hopefully the CRC instability kludge I added has "fixed" this.
Run 10 cycles with latest igt and -nightly kernel, it works well. root@x-bsw01:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# ./kms_flip_tiling --run-subtest flip-changes-tiling IGT-Version: 1.8-gb6f68c1 (x86_64) (Linux: 3.18.0_drm-intel-nightly_34d267_20141210+ x86_64) Subtest flip-changes-tiling: SUCCESS (3.537s)
Verified.Fixed.
Closing (>2 years) old Verified+Fixed.
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