[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 #16 from Jani Nikula <jani.nikula at intel.com> ---
Please install some recent kernel, add drm.debug=14 module parameter, reproduce
the problem, and attach dmesg to the bug.

Please ensure you have CONFIG_DRM_DP_AUX_CHARDEV=y, and do:

# dd if=/dev/drm_dp_aux0 > dpcd

Attach the result to the bug. If dd fails, please try ddrescue instead.

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