[Bug 94921] Remove illogical/bogus "Automatic" mode from "Broadcast RGB" property

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=94921

--- Comment #21 from Nicholas Stommel (nicholas.stommel at gmail.com) ---
Does the DP spec specifically say that 18bpp color displays should
unconditionally receive full range RGB? Because that's what your code is doing.
 The function in that conditional statement responsible for checking the CTA
range is never called in that case, which means that color depth in bpp alone
is being used to determine color range for the connector. Look at the code,
that's what has been happening literally since automatic mode was implemented
some time ago. Does that follow the DP spec? If so...why don't 24-bit color
displays (which are now significantly more common) get the same treatment?
Intel's Windows drivers default to full range RGB over Displayport for 24bpp
correctly. Honestly I feel kind of insulted by the dismissive reply. This is
not a matter of "personal preference", it's something objectively missing and
unaccounted for that affects desktop usability on either side badly that there
has to be a better solution here. There is no reason all the 24bpp VESA
compliant HP business monitors I have tried should not pass the driver's
compliance check.

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