[Bug 92707] New: [BSW] [IGT Basic] [Regression] igt / pm_backlight / basic-brightness fails

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Wed Oct 28 04:05:24 PDT 2015


https://bugs.freedesktop.org/show_bug.cgi?id=92707

            Bug ID: 92707
           Summary: [BSW] [IGT Basic] [Regression] igt / pm_backlight /
                    basic-brightness fails
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: blocker
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: christophe.prigent at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 119250
  --> https://bugs.freedesktop.org/attachment.cgi?id=119250&action=edit
kern.log.bz2

Hardware BSW-M:
Motherboard: Braswell CRB
cpu model name : Intel(R) Celeron(R) CPU N3060 @ 1.60GHz
cpu model : 76
cpu family : 6
Graphic card: Device 22b1 (rev 31)
Software:
Kernel: drm-intel-nightly 4.3.0-rc5 11bf7cfa1ba766d1e4060e41d6ece3beccfa2cf4
from git://anongit.freedesktop.org/drm-intel
commit 11bf7cfa1ba766d1e4060e41d6ece3beccfa2cf4
Author: Matt Roper <matthew.d.roper at intel.com>
Date:   Mon Oct 19 13:42:16 2015 -0700
drm-intel-nightly: 2015y-10m-19d-20h-41m-28s UTC integration manifest
Ubuntu 14.04.1 LTS
Bios: BRAS.X64.B084.R00.1508310642
Libdrm: 2.4.65

Steps:
-------
Execute command:
./pm_backlight --run-subtest basic-brightness

Actual result:
---------------
Test result is fail

Expected result:
----------------
Test is Pass

>From results.json:
-------------------
        "igt at pm_backlight@basic-brightness": {
            "returncode": 99, 
            "result": "fail", 
            "subtests": {
                "__type__": "Subtests"
            }, 
            "out": "IGT-Version: 1.12-NOT-GIT (x86_64) (Linux:
4.3.0-rc5-drm-intel-nightly+ x86_64)\nStack trace:\n  #0
[__igt_fail_assert+0xf1]\n  #1 [test_and_verify+0x9a]\n  #2
[__real_main148+0xa9]\n  #3 [main+0x29]\n  #4 [__libc_start_main+0xf5]\n  #5
[_start+0x29]\n  #6 [<unknown>+0x29]\nSubtest basic-brightness: FAIL
(0.015s)\n", 
            "dmesg": "", 
            "exception": null, 
            "err": "Test assertion failure function test_and_verify, file
pm_backlight.c:105:\nFailed assertion: result <= val + val * TOLERANCE / 100 &&
result >= val - val * TOLERANCE / 100\nSubtest basic-brightness failed.\n****
DEBUG ****\nTest assertion failure function test_and_verify, file
pm_backlight.c:105:\nFailed assertion: result <= val + val * TOLERANCE / 100 &&
result >= val - val * TOLERANCE / 100\n****  END  ****\n", 
            "__type__": "TestResult", 
            "environment": "PIGLIT_SOURCE_DIR=\"/usr/local/src/piglit\"
PIGLIT_PLATFORM=\"mixed_glx_egl\"", 
            "command": "/usr/local/src/intel-gpu-tools/tests/pm_backlight
--run-subtest basic-brightness", 
            "time": {
                "start": 1444708191.742918, 
                "end": 1444708191.807447, 
                "__type__": "TimeAttribute"
            }
        }, 

Regression:
-----------
Test was Pass with:
kernel 4.3.0-rc4-drm-intel-nightly+ c38f2c24fb6484fc6900efa6f8d968e8ee964e9c
from git://anongit.freedesktop.org/drm-intel
commit c38f2c24fb6484fc6900efa6f8d968e8ee964e9c
Author: Daniel Vetter <daniel.vetter at ffwll.ch>
Date:   Fri Oct 9 14:50:43 2015 +0200
drm-intel-nightly: 2015y-10m-09d-12h-49m-56s UTC integration manifest
Libdrm - 2.4.65 from http://cgit.freedesktop.org/mesa/drm/

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