Re: multiple monitor detection

[Robert Pluim]

>>>>> On Mon, 21 Oct 2024 15:05:01 +0900, Psionic K 
>>>>> <psionik@positron.solutions> said:

    Psionic> I was going to add multiple monitor support to the dslide package. 
 I
    Psionic> have to physical monitors active now.

    Psionic> However `display-monitor-attributes-list` returns the following:

    Psionic>     (((name . "combined screen") (geometry 0 0 6400 2160) (workarea
    Psionic> 6400 2080 0 80)
    Psionic>       (mm-size 1693 572) (frames #<frame Emacs 0x3cca5d50>) 
(source .
    Psionic> "fallback")))

    Psionic> When running `xrandr`, xrandr is installed, so I'm not sure why the
    Psionic> source is fallback.  I restarted Emacs.  (30.0.91).

Emacs doesnʼt use 'xrandr' the executable, it uses the "Xrandr"
extension, so the header files and the library need to be available
when building Emacs. Check your config.log to see if 'configure' found
them.

If not, you should try installing the "Xrandr" dev package for your
distribution and re-run 'configure'. On Debian the package you need is
called 'libxrandr-dev'

Robert
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