[xmonad] Issue 502 in xmonad: Multihead trouble docs update -- xrandr required for proper display

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Status: New
Owner: ----

New issue 502 by unpan... at gmail.com: Multihead trouble docs update --  
xrandr required for proper display
http://code.google.com/p/xmonad/issues/detail?id=502

What steps will reproduce the problem?
1. Clean FreeBSD install.

2. Install the following ports:
    - x11/hs-X11
    - x11/hs-xmonad
    - x11/xorg-minimal
    - x11/xterm
    - x11/nvidia-xconfig
    - x11/nvidia-settings

3. Configure!
    - Use a vanilla `defaultConfig`
    - Use default config from nvidia-xconfig
    - Set up the second monitor using nvidia-settings, check Xinerama
    - Start the engines.

What is the expected output? What do you see instead?

Should see a working multihead xmonad running. The result is one workspace  
stretched over both monitors. Going through the current troubleshooting FAQ  
doesn't lead to any answers. You'll get the following output:

$ ghc -e Graphics.X11.Xinerama.compiledWithXinerama
True

$ ghc -e "Graphics.X11.openDisplay [] >>=  
Graphics.X11.Xinerama.getScreenInfo"
[Rectangle {..snip..},Rectangle {..snip..}]

It should mention to make sure you've got xrandr installed. I dunno how  
obvious that is, but it *is* the troubleshooting section!

What version of the product are you using? On what operating system?

$ uname -a
FreeBSD 9.0-RELEASE FreeBSD 9.0-RELEASE #0: Tue Jan  3 07:46:30 UTC  
2012     root at farrell.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  amd64

$ ghc --version
The Glorious Glasgow Haskell Compilation System, version 7.0.4

$  xmonad --version
xmonad 0.10

Are you using an xmonad.hs?  Please attach it and the output of "xmonad
--recompile".

main = xmonad defaultConfig{terminal = "/usr/local/bin/xterm"}

:P

Please provide any additional information below.

Might make more sense to just make the xmonad port depend on X11 and  
xrandr, so they're guaranteed to get pulled in. I'm going to email the  
maintainer.