Novice trying to understand Xrandr and multi monitor setup
ilan at astelecom.ru
Wed May 25 08:45:34 UTC 2016
On Tue, May 24, 2016 at 08:38:53PM -0700, TJ Olaes wrote:
> Good evening.
> I have a dual monitor setup and am trying to figure out why ScreenCount
> returns 1. My code is as follows:
The ScreenCount is not a RANDR call.
This is from CORE multihead support attempt. That model have a
large pile of drawbacks now: it is very hard to move window from
one monitor to another, or to dynamically make second monitor a
copy of first one, or join monitors in other sensible configura-
tion. In fact, distinct screens was almost isolated from each
Therefore, in attempt to have a good support of multihead, new
extensions introduced, that lists all monitors in one CORE X11
screen, and manipulates them by itsel: first was Xinerama, than
(and now) RANDR.
The CORE multiple screens is almost unsed now (well, AFAIK
fglrx creates two screens on dual-GPU notebooks: one with slow
in-CPU accelerator, and one with discrete GPU).
So you should read RANDR spec to get information about yoour
> FWIW I'm using Xrandr, and I've tried doing "xrandr --auto" just to see
> what it detects and I still get the same result. I'm completely lost
It is very strange that you see some result of xrandr --auto.
Usually, it is completely silent. xrandr -q is for getting in-
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