[Bug 99897] [KBL/BXT] [IGT] kms_properties produces Failed assertion when checking connector properties

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99897

--- Comment #2 from Marta Löfstedt <marta.lofstedt at intel.com> ---
This issue has been reproduced on the CI system in Finland. However, I know
that:

./tests/kms_properties --run-subtest connector-properties-legacy

passed some time before X-mas:

./tests/kms_properties --run-subtest connector-properties-atomic

was skipped for non-atomic drivers.

I have confirmed this with Ubuntu 16.10 Vanilla 4.8 kernel. So, this is a
rather new regression. 

On 4.10 kernels:
The connector-properties-atomic subtests, fails for audio property on atomic
connector. I.e. the call to drmModeAtomicAddProperty is failing with -EINVAL in
drm_atomic_connector_set_property.

The connector-properties-legacy fails down in intel_dp_set_property when I run
on my HSW laptop, because CRTC_ID prop is not matches. 

I am suspecting this regression started when atomic was turned on, but I need
to verify this with a bisect. Is there any information on the latest kernel
this passed on?

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