(In reply to comment #11)
> Alex, this is great! It works perfectly for me. I tried all available modes.
> Thanks a lot.
> 
> A follow up question: Is this setting supposed to be reset on reboot or
> remembered? It is reset for me. If one would like to have this remembered,
> in which tool should one ask for such a feature (kernel, X, DE, somewhere
> else)? Thanks.

It's up to the desktop environment.  It should be saved as part of the display
configuration (e.g., along with display modes, orientations, etc., etc.).