- xmonad - Haskell.org

Xinerama
by Aldo Cortesi 13 Jun '07

13 Jun '07

Hi folks, I'm seeing symptoms similar to the the same Xinerama-related problem reported here: http://www.haskell.org/pipermail/xmonad/2007-June/000491.html In that same thread, Jason Creighton suggested running the following test script: """ import Graphics.X11.Xlib import Graphics.X11.Xinerama main = do d <- openDisplay "" xineramaQueryScreens d >>= print getScreenInfo d >>= print """ On my system, this outputs: """ Nothing [Rectangle {rect_x = 0, rect_y = 0, rect_width = 1920, rect_height = 1200}] """ Now the plot thickens. The following snippet of C should be very nearly equivalent to the script above: """ #include <X11/X.h> #include <X11/Xlib.h> #include <X11/extensions/Xinerama.h> #include <stdio.h> #include <stdlib.h> int main (){ Display *dpy; XineramaScreenInfo *xsi; int i, num; dpy = XOpenDisplay("\0"); printf("%s\n", XDisplayString(dpy)); if((xsi = XineramaQueryScreens(dpy, &num))) { printf("%i screens\n", num); for(i = 0; i < num; i++) { printf("%i: %ix%i\n", xsi[i].screen_number, xsi[i].width, xsi[i].height); } XFree(xsi); } XCloseDisplay(dpy); return 0; } """ However, from this, I get the following output: 2 screens 0: 1920x1200 1: 1280x1024 As you can see, the Xinerama screens are detected correctly. Xinerama under other window managers (e.g. KDE) also seems to work flawlessly with the same X configuration. Despite this is being my first real foray into Haskell, I bravely ploughed through the appropriate bindings in X11-extras and X11-1.2.2, but I could see no obvious errors. I have a hunch that the problem is related to the fact that I have an NVidia graphics card with TwinView (NVidia's magic sauce that allows you to connect multiple screens to the same GPU). Apparently, Twinview is known to cause problems with some window managers - see, for example, the FAQ section of this page from NVidia: http://http.download.nvidia.com/XFree86/Linux-x86/1.0-8178/README/appendix-… The FAQ entry is pretty vague about exactly what form these "problems" might take. I'm keen to give XMonad a try, so I'd be happy to spend time helping to troubleshoot this problem... Cheers, Aldo -- Aldo Cortesi aldo(a)nullcube.com http://www.nullcube.com Mob: 0419 492 863

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darcs patch: change keybinding for restart to Escape.
by David Roundy 12 Jun '07

12 Jun '07

I don't know whether we want to change the default bindings here, but mod-Q I find highly annoying, in that it conflicts with one of my favorite emacs commands. It seems like Escape should work as well here. David Mon Jun 11 08:56:28 PDT 2007 David Roundy <droundy(a)darcs.net> * change keybinding for restart to Escape. I get tired of the conflict with meta-Q in emacs, which causes me to keep accidentally restarting xmonad and losing my dynamic configuration.

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Tabbed layout, xinerama, strange crashing
by Dave Harrison 12 Jun '07

12 Jun '07

Hey all, I've been trying out the new tabbed layout and it was working really well for about 2 hours, then it suddenly just started killing my X for some reason. What I was finding was that as soon as I switched screens my session would die (dropping me back to the gdm login page). It would also do this if I switched to a workspace > 5. Weird eh ? I'm using the darcs head for contrib, xmonad and x11-extras, so I pulled the latest (again, just to be sure) for them and no updates. I'm also using Feisty Ubuntu as my OS if that makes any difference. I rebuilt and reinstalled, no luck. As soon as I dropped the tabbed module out and rebuilt/reinst xmonad it's all back to working again (albeit sans tabbing which I really REALLY miss now already :-) ). Not being an X guru, and not very up on haskell, I'm not sure how to try and debug this ... can anyone suggest how I might try and track this problem down ? Cheers Dave

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darcs patch: add differentiate function to StackSet t... (and 2 more)
by David Roundy 12 Jun '07

12 Jun '07

Here's the code to catch exceptions. I currently catch exceptions when calling layouts. We could add catchX calls elsewhere, if it seems advisable, but I think this is sufficient. David Tue Jun 12 06:28:53 PDT 2007 David Roundy <droundy(a)darcs.net> * add differentiate function to StackSet to go [a] -> Stack a. Tue Jun 12 08:05:55 PDT 2007 David Roundy <droundy(a)darcs.net> * make focus, up and down complete functions. This is a rerun of my change to make (Stack a) never be empty. Gives us more type-safety. Tue Jun 12 08:42:53 PDT 2007 David Roundy <droundy(a)darcs.net> * add catchX to catch exceptions.

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darcs patch: add differentiate function to StackSet t... (and 1 more)
by David Roundy 12 Jun '07

12 Jun '07

Hi all, This is my change to make (Stack a) never be empty, with possibly empty stacks represented by (Maybe Stack a). This slightly simplifies the layout code, since we handle the case of no windows in the core. This assumes that we don't have a layout that needs to do something with an empty screen. Anyhow, one step in my campaign for powerful, safe extensibility. The main thing we need to do, though, is to catch exceptions... David Tue Jun 12 06:28:53 PDT 2007 David Roundy <droundy(a)darcs.net> * add differentiate function to StackSet to go [a] -> Stack a. Tue Jun 12 08:05:55 PDT 2007 David Roundy <droundy(a)darcs.net> * make focus, up and down complete functions. This is a rerun of my change to make (Stack a) never be empty. Gives us more type-safety.

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darcs patch: add new combo layout combiner.
by David Roundy 12 Jun '07

12 Jun '07

This module subsumes the TwoTabbed layout, which should not be applied. David Mon Jun 11 15:49:22 PDT 2007 David Roundy <droundy(a)darcs.net> * add new combo layout combiner.

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darcs patch: add "Square" layout.
by David Roundy 12 Jun '07

12 Jun '07

Mon Jun 11 19:10:48 PDT 2007 David Roundy <droundy(a)darcs.net> * add "Square" layout. This is probably only ever useful in combination with Combo. It sticks one window in a square region, and makes the rest of the windows live with what's left (in a full-screen sense).

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darcs patch: make borderWidth dynamically configurable.
by David Roundy 12 Jun '07

12 Jun '07

This is a sort of hypothetical change. I like this design more than the recursive import approach. I'm not sure how often people will want to dynamically adjust the width of their borders, but I also don't see any reason to forbid it. David Sun Jun 10 14:22:58 PDT 2007 David Roundy <droundy(a)darcs.net> * make borderWidth dynamically configurable.

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darcs patch: Refactor Decoration into a general layou... (and 1 more)
by Stefan O'Rear 12 Jun '07

12 Jun '07

Mon Jun 11 23:02:10 PDT 2007 Stefan O'Rear <stefanor(a)cox.net> * Refactor Decoration into a general layout-level hooks interface, and a decoration support module on top of that Mon Jun 11 23:07:13 PDT 2007 Stefan O'Rear <stefanor(a)cox.net> * In Decoration.hs, track rename of ModifyWindows

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darcs patch: Add a broadcastMessage function, which s... (and 3 more)
by Stefan O'Rear 12 Jun '07

12 Jun '07

(notice last patch added wrt previous bundle) Mon Jun 11 22:53:39 PDT 2007 Stefan O'Rear <stefanor(a)cox.net> * Add a broadcastMessage function, which sends to all visible workspaces without refreshing. (+6 loc) Mon Jun 11 22:55:10 PDT 2007 Stefan O'Rear <stefanor(a)cox.net> * Use broadcastMessage in windows and switchLayout, should improve Xinerama for tabbed and make xmonad robust in the presence of state-altering unlayout hooks Mon Jun 11 22:58:59 PDT 2007 Stefan O'Rear <stefanor(a)cox.net> * Use a more descriptive name for the layout reversal message Mon Jun 11 23:05:46 PDT 2007 Stefan O'Rear <stefanor(a)cox.net> * -Wall police

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