[Bug 98352] [ctg bat] igt@kms_flip@basic-flip-vs-wf_vblank

[Bug 98352] [ctg bat] igt@kms_flip@basic-flip-vs-wf_vblank

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https://bugs.freedesktop.org/show_bug.cgi?id=98352

yann <yann.argotti@intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Assignee|intel-gfx-bugs@lists.freede |dri-devel@lists.freedesktop
                   |sktop.org                   |.org
         QA Contact|intel-gfx-bugs@lists.freede |
                   |sktop.org                   |
          Component|DRM/Intel                   |IGT

--- Comment #1 from yann <yann.argotti@intel.com> ---
Reference to Chris' patch: https://patchwork.freedesktop.org/series/14114/

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[Bug 98352] [ctg bat] igt@kms_flip@basic-flip-vs-wf_vblank

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https://bugs.freedesktop.org/show_bug.cgi?id=98352

--- Comment #2 from Ville Syrjala <ville.syrjala@linux.intel.com> ---
The problem on this machine seems to be that the clock is about .6% off,
whereas the test will accept a deviation up to .5%.

I also have a VLV machine with DSI that suffers from a similar problem. I think
for internal panels the best solution might be for the kernel to fix up the
reported clock for the fixed mode. Not sure what we'd do about the EDID though,
assuming the the panel has one and the difference in the clocks would be large
enough to be visible in the EDID timings. And of course not all modes coming
from the EDID even have actual detailed timing descriptors.

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[Bug 98352] [ctg bat] igt@kms_flip@basic-flip-vs-wf_vblank

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https://bugs.freedesktop.org/show_bug.cgi?id=98352

--- Comment #3 from Chris Wilson <chris@chris-wilson.co.uk> ---
Yeah, I'm just sending a patch to detect the "clock error" and teach BAT to
skip this test (adding another test to kms_setmode to actually complain about
the mismatch). Since userspace is using the dotclock to calculate the MscRate
(oh, the merriment with dynamic refresh) we should think of someway to remove
the discrepancy between the modeline and actual hardware value. At the very
basic level, could we fixup the mode as reported via GetCrtc?

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[Bug 98352] [ctg bat] igt@kms_flip@basic-flip-vs-wf_vblank

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https://bugs.freedesktop.org/show_bug.cgi?id=98352

Chris Wilson <chris@chris-wilson.co.uk> changed:

           What    |Removed                     |Added
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         Resolution|---                         |NOTABUG
             Status|NEW                         |RESOLVED

--- Comment #4 from Chris Wilson <chris@chris-wilson.co.uk> ---
The modeline is inconsistent. Closing for BAT as we skip over this
inconsistency, will address in a separate non-BAT test with kms_setmode.

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[Bug 98352] [ctg bat] igt@kms_flip@basic-flip-vs-wf_vblank

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https://bugs.freedesktop.org/show_bug.cgi?id=98352

Elizabeth <elizabethx.de.la.torre.mena@intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |CLOSED

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