[Bug 103347] [dp] intel_dp.c:1554 WARN_ON(len <=8)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103347

--- Comment #16 from F.Hartung <f.hartung at outlook.de> ---
So to be honest I do not see where that should lead.

The forum is not only talking about HDMI 2.0 and 10bit color capabilities,
mostly they / we talked about the buggy audio pass-through or no audio output
at all. Most of the HDMI firmware updates fixed those issues like this 

http://nucblog.net/2017/02/apollo-lake-and-kaby-lake-nuc-hd-audio-bitstreaming-firmware-fix/


The uploaded dmesg output literally states: 

[    1.488203] i915 0000:00:02.0: vgaarb: changed VGA decodes:
olddecodes=io+mem,decodes=io+mem:owns=io+mem

[    1.488607] [drm] Finished loading DMC firmware i915/bxt_dmc_ver1_07.bin
(v1.7)

[    1.489424] [drm] forcing DP-2 connector on

[    1.511305] [drm] Initialized i915 1.6.0 20171023 for 0000:00:02.0 on minor
0

So yes IMHO the i915 driver is loaded or at least it's firmware and stuff, also
the DP-2 connector is mentioned several times.

This is the Asrock support page https://asrock.com/mb/Intel/J3455-ITX/

Feel free to show me the wrong port I'm using. Last time I checked the
connectors it had a DVI-D, D-SUB and a single HDMI. Afaik there is no "real" DP
connector but the internal DP 1.4 port is converted by the lspcon to HDMI 2.0
because the apollo lake plattform itself provides no HDMI 2.0 just 1.4.

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