[Bug 100023] [SKL] LSPCon and DisplayPort always output limited range RGB, even when it should output full range RGB

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=100023

--- Comment #25 from Martin Peres <martin.peres at free.fr> ---
(In reply to Michał Kopeć from comment #21)
> Apologies, previous comment was submitted accidentally before I finished it.
> Feel free to remove it.
> 
> This issue is affecting me as well. My setup is:
>  - Lenovo ThinkPad T430 with HD 4000
>  - HP LA2306x connected via DisplayPort on the laptop docking station
>  - Arch Linux with kernel 4.17.3
> 
> DisplayPort output defaults to 16-235 color range, while any other outputs
> on the laptop will correctly output 0-255 full RGB. There is currently no
> way to set the driver to default to Full RGB regardless of what the display
> EDID is.

Thanks for telling us! Could you follow the instructions of Jani in comment
https://bugs.freedesktop.org/show_bug.cgi?id=100023#c16?

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