[Bug 102583] [CI] igt at kms_vblank@*-accuracy-idle - Failed assertion: vbl.reply.sequence == target

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=102583

Lakshmi <lakshminarayana.vudum at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|medium                      |low

--- Comment #10 from Lakshmi <lakshminarayana.vudum at intel.com> ---
Seeting the priority to low based on Ankit's assessment.
Assessment:
Reproducible : 1-2% From recent history the test is passing for the mentioned
platforms, The issue seems to be very rare.
Impact : Low. There is only 1 vblank mismatch in most of the cases.
Fdo bug : https://bugs.freedesktop.org/show_bug.cgi?id=102583

What does the sub-test do:
the test accuracy idle, tests the accuracy of the vblank events received by the
userspace.
The test sets a target of say 'n' vblanks and gets the absolute sequence of the
current vblank say 'x'.
Theoretically after 'n' vblanks, we should get the 'n' th vblank's absolute
sequence no. as (n + x).

The issue:
The cases that fail, though rare, have the actual absolute vblank sequence no.
(received after 'n' vblanks) more than the expected value.

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