<snip>
> - I can't set the screen's resolution, refresh rate, or gamma value. It
> used
> to be configurable via the control center, but the controls disappeared
> from
> there. You can use System/KRandRTray to set the resolution and refresh
> rate,
> but it won't remember the setting.
</snip>

Just a quick comment here; the module you describe was never part of the
upstream KDE sources.  Instead, it was provided by Ubuntu as part of a
failed attempt at a monitor/Xorg configuration utility.  The biggest
problem with it is that it was written solely in Python, was therefore
somewhat slow, and additionally we have no Python devs here to fix it/keep
it up to date.

I would strongly suggest the addition of similar functionality to
libkrandr (should be somewhat simple), and then the addition of a simple,
persistent randr settings manager to kcontrol.  I may even do this in the
future provided I have enough time. :)

Tim