[Bug 101439] New: [IGT] kms_flip at basic-flip-vs-wf_blank vblank interval differs from modeline

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101439

            Bug ID: 101439
           Summary: [IGT] kms_flip at basic-flip-vs-wf_blank vblank interval
                    differs from modeline
           Product: DRI
           Version: DRI git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: tomi.p.sarvela at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Piglit was changed to consider stderr output as WARN, and this exposed problem
with kms_flip at basic-flip-vs-wf_blank test on older gens (Gens 4 to 7)

Affected testhosts: Broadwater, Eagle Lake, Cantiga, Iron Lake, Sandy Bridge,
Ivy Lake, Haswell-R (curiously, not Haswell K-CPUs)

Errors are in form:

(kms_flip:2174) WARNING: vblank interval differs from modeline! expected
16665.6us, measured 16717us +- 0.000us, difference 51.4us (inf sigma)
(kms_flip:2174) WARNING: vblank interval differs from modeline! expected
16665.6us, measured 16717us +- 0.250us, difference 51.5us (205.9 sigma)
(kms_flip:2174) WARNING: vblank interval differs from modeline! expected
16666.7us, measured 16633us +- 0.250us, difference 33.6us (134.4 sigma)
(kms_flip:2174) WARNING: vblank interval differs from modeline! expected
16666.7us, measured 16633us +- 0.250us, difference 33.6us (134.4 sigma)

-- 
You are receiving this mail because:
You are the assignee for the bug.
You are on the CC list for the bug.
You are the QA Contact for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20170615/91b5958b/attachment.html>