Docky becomes locked-up on multi-monitor with xrandr change

[Aaron Roydhouse]

Docky 2.1.2 on Ubuntu 11.4 Natty (Unity) on Lenovo X301 (2776) laptop, Intel HDA graphics, Intel 4500MHD, with external second display. Screens in top/bottom arrangement, laptop is primary/bottom screen and external screen is secondary/top.

Two problems, one just an annoyance, one a total failure:
(1) Switching from one monitor (laptop) to two monitors (laptop botton, external top) with xrandr, Docky switches to top/external monitor. Not sure if this is a bug, but it is undesireable, leaves Docky in the middle of the combined display. Can click on 'anchor' and drag it back down to botton/laptop/primary monitor.
(2) Switching from two monitors to one monitor, Docky shifts from disconnected top monitor to bottom/laptop/primary monitor - how it not longer works, it no longer registered any mouse clicks, it no longer auto-hides or react to other windows. Otherwise it appears to still be running.

Let me know if there is any addition info I can collect or tests to do.

[Easy answer would be to blame Unity rather than Docky? Natty/Unity appears to have been released with zero consideration or testing on multiple monitors. Only two days in, and a long list of bugs to report like this. Guessing people at Canonical are not allowed to use multiple monitors :-) ]

After (2) occurs sending SIGQUIT I get this:
"<unnamed thread>" tid=0x0x7f0227481760 this=0x0x7f022747fe60 thread handle 0x404 state : not waiting owns ()
  at (wrapper managed-to-native) Gtk.Application.gtk_main () <0x00055>
  at (wrapper managed-to-native) Gtk.Application.gtk_main () <0x00055>
  at Gtk.Application.Run () <0x0000b>
  at Docky.Docky.Main (string[]) <0x004c3>
  at (wrapper runtime-invoke) <Module>.runtime_invoke_void_object (object,intptr,intptr,intptr) <0x00054>

Linux shim 2.6.38-8-generic #42-Ubuntu SMP Mon Apr 11 03:31:24 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux

[Info 00:10:29.409] Docky version: 2.1.2 Release
[Info 00:10:29.419] Kernel version: 2.6.38.8
[Info 00:10:29.420] CLR version: 2.0.50727.1433
[Debug 00:10:29.755] [UserArgs] BufferTime = 0
[Debug 00:10:29.755] [UserArgs] MaxSize = 2147483647
[Debug 00:10:29.755] [UserArgs] NetbookMode = False
[Debug 00:10:29.755] [UserArgs] NoPollCursor = False
[Debug 00:10:29.783] [SystemService] Using org.freedesktop.UPower for battery information
[Info 00:10:29.817] [ThemeService] Setting theme: Classic
[Debug 00:10:29.826] [DesktopItemService] Loading remap file '/usr/share/docky/remaps.ini'.
[Debug 00:10:29.836] [DesktopItemService] Remapping 'Picasa3.exe' to 'picasa'.
[Debug 00:10:29.836] [DesktopItemService] Remapping 'nbexec' to 'netbeans'.
[Debug 00:10:29.836] [DesktopItemService] Remapping 'deja-dup-preferences' to 'deja-dup'.
[Debug 00:10:29.836] [DesktopItemService] Remapping 'VirtualBox' to 'virtualbox'.
[Warn 00:10:29.836] [DesktopItemService] Could not find remap file '/home/aaron/.local/share/docky/remaps.ini'!
[Debug 00:10:29.839] [DesktopItemService] Loading desktop item cache '/home/aaron/.cache/docky/docky.desktop.en_AU.utf8.cache'.
[Info 00:10:30.170] [DockServices] Dock services initialized.
[Error 00:10:30.183] [DBusManager] Bus Name 'org.gnome.Docky' is already owned
[Fatal 00:10:30.183] Another Docky instance was detected - exiting.

Mono JIT compiler version 2.6.7 (Debian 2.6.7-5ubuntu3)
Copyright (C) 2002-2010 Novell, Inc and Contributors. www.mono-project.com
 TLS: __thread
 GC: Included Boehm (with typed GC and Parallel Mark)
 SIGSEGV: altstack
 Notifications: epoll
 Architecture: amd64
 Disabled: none