[Bug 112212] Commit 0c06fa15600 (Add support of BT.2020 Colorimetry to DP MSA) causing 4K monitor corruption

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=112212

--- Comment #10 from Kenneth C <kenny at panix.com> ---
I'm running a CoffeeLake platform.

I AM running drm-tip.

I'll send the dmesg logs later, but there is absolutely nothing in them except
this:

----
$  dmesg -H | fgrep -i i915
[  +0.038177] snd_hda_codec_hdmi hdaudioC0D2: No i915 binding for Intel HDMI/DP
codec
[  +0.000003] i915 0000:00:02.0: VT-d active for gfx access
[  +0.000031] i915 0000:00:02.0: vgaarb: deactivate vga console
[  +0.000813] i915 0000:00:02.0: vgaarb: changed VGA decodes:
olddecodes=io+mem,decodes=io+mem:owns=io+mem
[  +0.001040] [drm] Finished loading DMC firmware i915/kbl_dmc_ver1_04.bin
(v1.4)
[  +0.010389] i915 0000:00:02.0: GuC firmware i915/kbl_guc_33.0.0.bin version
33.0 submission:disabled
[  +0.000008] i915 0000:00:02.0: HuC firmware i915/kbl_huc_4.0.0.bin version
4.0 authenticated:yes
[  +0.001179] [drm] Initialized i915 1.6.0 20191101 for 0000:00:02.0 on minor 0
[  +0.025831] fbcon: i915drmfb (fb0) is primary device
[  +0.001026] i915 0000:00:02.0: fb0: i915drmfb frame buffer device
----

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