[xmonad] Issue 516 in xmonad: XMonad and xmobar wake up too often and are consuming more battery power

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Comment #2 on issue 516 by allber... at gmail.com: XMonad and xmobar wake up  
too often and are consuming more battery power
http://code.google.com/p/xmonad/issues/detail?id=516

(I hope this doesn't try to "fix" my formatting...)
You can work around this by building xmonad manually, but each of the  
possibilities has flaws:

     ghc -threaded --make -i -ilib -fforce-recomp xmonad.hs -o  
xmonad-$(uname -m)-$(uname | tr A-Z a-z)

this will work but may cause problems with some extensions

     ghc -rtsopts -with-rtsopts=-V0 --make -i -ilib -fforce-recomp xmonad.hs  
-o xmonad-$(uname -m)-$(uname | tr A-Z a-z)

this may still interrupt too often but not as often as with the buggy  
runtime

If you don't have an xmonad.hs yet, a bare minimal one you can use with  
this is

     import XMonad
     main = xmonad defaultConfig