Comment #10 on issue 226 by SpencerJanssen: XMonad.Prompt lockups with ghc 6.10 http://code.google.com/p/xmonad/issues/detail?id=226 Thanks for all the excellent test data. All tests so far have an error similar to:

xmonad: X11 error: BadMatch (invalid parameter attributes), request code=1, error code=8

Which indicates an invalid parameter (BadMatch) on a XCreateWindow call (X11 opcode 1). Naturally all subsequent X calls operating on that window will fail, leading to a failure to render windows and, in the case of Prompt which gathers input from the window, lock ups. We have also seen that superficially similar programs have different results, sometimes even varying from machine to machine. All of these results point to one of two things: incorrect foreign import declarations for createNewWindow, or correct foreign declarations but incorrect code generation by GHC. The next step is to come up with a minimal test program and ask for help from GHC HQ. -- You received this message because you are listed in the owner or CC fields of this issue, or because you starred this issue. You may adjust your issue notification preferences at: http://code.google.com/hosting/settings