mgm/doc/trouble.html

   1 <title>  xiph.org: MGM troubleshooting </title>
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  18 <hr>
  19
  20 <h2>Troubleshooting the beast...</h2>
  21
  22 MGM is aimed at skilled users, not the 3l33T3 war3z crowd.<p>
  23
  24 (1f U sp3ll l1k3 th1s, gu3ss wh1ch U R)<p>
  25
  26 MGM was originally a script for my own use, but a few other folks
  27 liked it (not unintended) so I'm just going to fling it at the world
  28 at large.  I'm not going to let it become a support load. I'm not
  29 interested in teaching newbies how to use X resources this time
  30 around, sorry.<p>
  31
  32 That said, there are a few things that are tricky about using MGM, so
  33 I might as well save folks the time of slugging through misleading
  34 problems and list a few of the things that can go wrong below.<p>
  35
  36 <h3>Weird Tk errors</h3>
  37
  38 It turns out Tk doesn't deal well with whitespace in X resources; it
  39 considers whitespace to be part of the entry, ends up being unable to
  40 look up colors like "Black ", and then just gives up. If you get
  41 something like the below:
  42
  43 <pre>
  44 Use of inherited AUTOLOAD for non-method Tk::MainWindow::_Destroyed() is
  45 deprecated at /usr/lib/perl5/Tk/MainWindow.pm line 55.
  46 Use of uninitialized value at /usr/lib/perl5/Tk/MainWindow.pm line 55.
  47 821b47c () is not a hash at /usr/lib/perl5/Tk/MainWindow.pm line 55.
  48 Abort
  49 </pre>
  50
  51 or
  52
  53 <pre>
  54 Error eval()ing ->module_run for Netstat: unknown color name "gray      "
  55 at /usr/lib/perl5/Tk/Submethods.pm line 37.
  56 </pre>
  57
  58 Chances are you have whitespace in your MGM resources.  Emacs in
  59 font-lock mode has the tendency to insert tabs where you least expect.
  60 Check carefully for this.
  61
  62 <p>
  63
  64 <h3>It runs perfectly for a while then suddenly explodes</h3>
  65
  66 A few modules (diskuse and netstat for now) watch for changes in
  67 machine configuration and will trigger an update of the whole MGM
  68 window if, for example, a new filesystem appears in df.<p>
  69
  70 If you're riding the limits of minimum sizing, it's possible that the
  71 window really needed to be bigger for the extra entry and instead the
  72 world ended.  Similarly, forcably disabling automatic updates
  73 (*reconfig: false) can cause things to break as MGM tries to monitor
  74 devices that no longer exist.  Or, maybe you found a bug.  If you
  75 did, drop us a line at <a href="mailto:mgm@xiph.org">mgm@xiph.org</a>.
  76
  77 <hr>
  78 <a href="http://www.xiph.org/">
  79 <img src="white-xifish.gif" align=left border=0>
  80 </a>
  81 <p>
  82 <font size=-2 color=#505050>
  83
  84 MGM will not get your whites whiter or your colors brighter.  It will,
  85 however, sit there and look spiffy while sucking down a major
  86 honking wad of RAM.<p>
  87
  88 MGM, Xiphophorus and their logos are trademarks (tm) of
  89 <a href="http://www.xiph.org/">Xiphophorus</a>.  These pages are
  90 copyright (C) 1994-1999 Xiphophorus. All rights reserved.<p>
  91
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