[xubuntu-users] plug-and play monitor loses configuration

[pereira]

Hi All,

I got myself qn ASUS PB287Q 4 k monitor with 3840x2160 pixels, which I'm
using together with an older but still nice ACER X243W 1920x1200 monitor.
The ASUS can connect through a displayport, which allows it to refresh at a
60 Hz rate, and an HDMI port which allows only 30 Hz (apparently).

The problem is: the connection through a displayport is plug-and-play
(I've been told), so that my computer Xubuntu 14.10) notices that something
is amiss, and it switches over to the remaining screen. Something similar
happens when I forget to log out: tihe system hits some timeout, the
monitor turns off, and the display goes to the smaller screen.

I could decide to use the HDMI connection, but then the mouse crawls across
the screen with little jumps, a very irritating sight.

I could perhaps connect through a second HDMI connection to speed things
up. But, what I'd wonder about is: can you turn off the plug-and-play 
thingie
so that things stay alive the way I like them?

Any other suggestion for getting this monitor under control?

Thank you,

Nino