Unpredictable Gnome/Nautilus behavior with Dual Head

[Michael Stora <mestora orbitelcom com>]

I'm running seperate X sessions on two monitors using the non-Twinview method
described in the NVIDIA manual:
http://http.download.nvidia.com/XFree86/Linux-x86/1.0-8774/README/appendix-p.html

In this mode, monitors can run on different heads of the graphics card with
full hardware acceleration at different resolutions and it depths.  The
mouse pointer can cross between monitors but applications can not.  Threads
spawn other threads in the same monitor, etc.

I used to do this in KDE and got "Desktop" and "Desktop 1" folders that
acted in a predictable manor: the contents of Desktop appearing on head 0
and the contents of Desktop 1 appearing on head 1.
Gnome on the other hand seems to be very confused.  I get seperate visual
desktops with seperate panels, applications launched in one open on the
correct monitor, etc.  However, files on either desktop exist in the same
/home/user/Desktop diretory.  There is little control on which monitor the
file displays on.  About half the time creating a new file or folder
displays it on the correct screen, about half the time the file is created
in the filesystem but appears on neither desktop (it may depend on where the
focus previously was).  When copying or cutting and pasting a file from
desktop to desktop the new file always seem to appear on the same screen as
the origional, so I have no way of choosing what files I want to see on
which screen (or both).

Finally, If I am dragging a file and hit the shared screen edge instead of
not allowing the file to be dragged any further, Nautilus just crashes.

Mike

here is my xorg.conf file:

Section "ServerLayout"
    Identifier     "Layout[all]"
    Screen         "Screen[0]" 0 0
    Screen         "Screen[1]" LeftOf "Screen[0]"
    InputDevice    "Keyboard[0]" "CoreKeyboard"
    InputDevice    "Mouse[1]" "CorePointer"
    Option         "Clone" "off"
    Option         "Xinerama" "off"
EndSection

Section "Files"
    InputDevices      "/dev/gpmdata"
    InputDevices      "/dev/input/mice"
    FontPath        "/usr/X11R6/lib/X11/fonts/misc:unscaled"
    FontPath        "/usr/X11R6/lib/X11/fonts/local"
    FontPath        "/usr/X11R6/lib/X11/fonts/75dpi:unscaled"
    FontPath        "/usr/X11R6/lib/X11/fonts/100dpi:unscaled"
    FontPath        "/usr/X11R6/lib/X11/fonts/Type1"
    FontPath        "/usr/X11R6/lib/X11/fonts/URW"
    FontPath        "/usr/X11R6/lib/X11/fonts/Speedo"
    FontPath        "/usr/X11R6/lib/X11/fonts/PEX"
    FontPath        "/usr/X11R6/lib/X11/fonts/cyrillic"
    FontPath        "/usr/X11R6/lib/X11/fonts/latin2/misc:unscaled"
    FontPath        "/usr/X11R6/lib/X11/fonts/latin2/75dpi:unscaled"
    FontPath        "/usr/X11R6/lib/X11/fonts/latin2/100dpi:unscaled"
    FontPath        "/usr/X11R6/lib/X11/fonts/latin2/Type1"
    FontPath        "/usr/X11R6/lib/X11/fonts/latin7/75dpi:unscaled"
    FontPath        "/usr/X11R6/lib/X11/fonts/baekmuk:unscaled"
    FontPath        "/usr/X11R6/lib/X11/fonts/japanese:unscaled"
    FontPath        "/usr/X11R6/lib/X11/fonts/kwintv"
    FontPath        "/usr/X11R6/lib/X11/fonts/truetype"
    FontPath        "/usr/X11R6/lib/X11/fonts/uni:unscaled"
    FontPath        "/usr/X11R6/lib/X11/fonts/CID"
    FontPath        "/usr/X11R6/lib/X11/fonts/ucs/misc:unscaled"
    FontPath        "/usr/X11R6/lib/X11/fonts/ucs/75dpi:unscaled"
    FontPath        "/usr/X11R6/lib/X11/fonts/ucs/100dpi:unscaled"
    FontPath        "/usr/X11R6/lib/X11/fonts/hellas/misc:unscaled"
    FontPath        "/usr/X11R6/lib/X11/fonts/hellas/75dpi:unscaled"
    FontPath        "/usr/X11R6/lib/X11/fonts/hellas/100dpi:unscaled"
    FontPath        "/usr/X11R6/lib/X11/fonts/hellas/Type1"
    FontPath        "/usr/X11R6/lib/X11/fonts/misc/sgi:unscaled"
    FontPath        "/usr/X11R6/lib/X11/fonts/xtest"
    FontPath        "/opt/kde3/share/fonts"
EndSection

Section "Module"
    Load           "type1"
    Load           "dbe"
    Load           "freetype"
    Load           "glx"
    Load           "v4l"
    Load           "extmod"
EndSection

Section "ServerFlags"
    Option         "AllowMouseOpenFail" "on"
EndSection

Section "InputDevice"
    Identifier     "Keyboard[0]"
    Driver         "kbd"
    Option         "Protocol" "Standard"
    Option         "XkbLayout" "us"
    Option         "XkbModel" "pc104"
    Option         "XkbRules" "xfree86"
EndSection

Section "InputDevice"
  Driver       "mouse"
  Identifier   "Mouse[1]"
  Option       "Buttons" "5"
  Option       "Device" "/dev/input/mice"
  Option       "Name" "PS2++ Logitech Wheel Mouse"
  Option       "Protocol" "explorerps/2"
  Option       "Vendor" "Sysp"
  Option       "ZAxisMapping" "4 5"
EndSection

Section "Modes"
  Identifier   "Modes[0]"
  Modeline      "1600x1200" 240.48 1600 1720 1896 2192 1200 1201 1204 1261
  Modeline      "1600x1200" 237.71 1600 1720 1896 2192 1200 1201 1204 1261
  Modeline      "1600x1024" 240.21 1600 1720 1896 2192 1024 1025 1028 1085
  Modeline      "1600x1024" 237.83 1600 1720 1896 2192 1024 1025 1028 1085
  Modeline      "1600x1024" 235.24 1600 1720 1896 2192 1024 1025 1028 1084
  Modeline      "1600x1000" 243.87 1600 1728 1904 2208 1000 1001 1004 1062
  Modeline      "1600x1000" 239.55 1600 1720 1896 2192 1000 1001 1004 1061
  Modeline      "1600x1000" 237.00 1600 1720 1896 2192 1000 1001 1004 1060
  Modeline      "1400x1050" 212.25 1400 1512 1664 1928 1050 1051 1054 1112
  Modeline      "1400x1050" 209.92 1400 1512 1664 1928 1050 1051 1054 1111
  Modeline      "1400x1050" 207.59 1400 1512 1664 1928 1050 1051 1054 1110
  Modeline      "1280x1024" 192.87 1280 1376 1520 1760 1024 1025 1028 1085
  Modeline      "1280x1024" 190.96 1280 1376 1520 1760 1024 1025 1028 1085
  Modeline      "1280x1024" 188.88 1280 1376 1520 1760 1024 1025 1028 1084
  Modeline      "1440x900" 217.36 1440 1552 1712 1984 900 901 904 961
  Modeline      "1440x900" 215.45 1440 1552 1712 1984 900 901 904 961
  Modeline      "1440x900" 213.32 1440 1552 1712 1984 900 901 904 960
  Modeline      "1280x960" 194.26 1280 1376 1520 1760 960 961 964 1022
  Modeline      "1280x960" 192.27 1280 1376 1520 1760 960 961 964 1021
  Modeline      "1280x960" 190.29 1280 1376 1520 1760 960 961 964 1020
  Modeline      "1366x768" 207.53 1368 1472 1624 1880 768 769 772 830
  Modeline      "1366x768" 205.72 1368 1472 1624 1880 768 769 772 829
  Modeline      "1366x768" 204.17 1368 1472 1624 1880 768 769 772 829
  Modeline      "1280x800" 194.19 1280 1376 1520 1760 800 801 804 862
  Modeline      "1280x800" 192.45 1280 1376 1520 1760 800 801 804 861
  Modeline      "1280x800" 190.94 1280 1376 1520 1760 800 801 804 861
  Modeline      "1152x864" 174.55 1152 1240 1368 1584 864 865 868 926
  Modeline      "1152x864" 172.89 1152 1240 1368 1584 864 865 868 925
  Modeline      "1152x864" 171.24 1152 1240 1368 1584 864 865 868 924
  Modeline      "1280x768" 194.29 1280 1376 1520 1760 768 769 772 830
  Modeline      "1280x768" 192.59 1280 1376 1520 1760 768 769 772 829
  Modeline      "1280x768" 191.13 1280 1376 1520 1760 768 769 772 829
  Modeline      "1024x768" 155.43 1024 1104 1216 1408 768 769 772 830
  Modeline      "1024x768" 154.07 1024 1104 1216 1408 768 769 772 829
  Modeline      "1024x768" 152.91 1024 1104 1216 1408 768 769 772 829
  Modeline      "1280x600" 156.44 1280 1376 1512 1744 600 601 604 650
  Modeline      "1280x600" 155.30 1280 1376 1512 1744 600 601 604 650
  Modeline      "1280x600" 154.17 1280 1376 1512 1744 600 601 604 650
  Modeline      "1024x600" 124.86 1024 1096 1208 1392 600 601 604 650
  Modeline      "1024x600" 123.96 1024 1096 1208 1392 600 601 604 650
  Modeline      "1024x600" 123.05 1024 1096 1208 1392 600 601 604 650
  Modeline      "800x600" 97.59 800 856 944 1088 600 601 604 650
  Modeline      "800x600" 96.89 800 856 944 1088 600 601 604 650
  Modeline      "800x600" 96.18 800 856 944 1088 600 601 604 650
  Modeline      "768x576" 89.56 768 824 904 1040 576 577 580 624
  Modeline      "768x576" 88.91 768 824 904 1040 576 577 580 624
  Modeline      "768x576" 88.26 768 824 904 1040 576 577 580 624
  Modeline      "640x480" 62.12 640 680 752 864 480 481 484 521
  Modeline      "640x480" 61.55 640 680 752 864 480 481 484 520
  Modeline      "640x480" 61.10 640 680 752 864 480 481 484 520
EndSection

Section "Modes"
  Identifier   "Modes[1]"
  Modeline "1024x768 85" 100.94 1024 1056 1432 1464 768 782 793 807
EndSection

Section "Monitor"
    Identifier     "Monitor[0]"
    VendorName     "ViewSonic"
    ModelName      "G220fb"
    UseModes       "Modes[0]"
    DisplaySize    427 320
    HorizSync      30.0 - 110.0
    VertRefresh    50.0 - 180.0
    Option         "CalcAlgorithm" "XServerPool"
    Option         "DPMS"
EndSection

Section "Monitor"
    Identifier     "Monitor[1]"
    VendorName     "Dell"
    ModelName      "2300MP"
    UseModes       "Modes[0]"
    DisplaySize    1445 1057
    HorizSync      15.0 - 70.0
    VertRefresh    56.0 - 85.0
    Option         "CalcAlgorithm" "XServerPool"
    Option         "DPMS"
EndSection

Section "Device"
    Identifier     "Device[0]"
    Driver         "nvidia"
    VendorName     "NVidia"
    BoardName      "GeForce 8800 GTS"
    BusID          "PCI:1:0:0"
    Screen         0
EndSection

Section "Device"
    Identifier     "Device[1]"
    Driver         "nvidia"
    VendorName     "NVidia"
    BoardName      "GeForce 8800 GTS-head 2"
    BusID          "PCI:1:0:0"
    Screen         1
EndSection

Section "Screen"
    Identifier     "Screen[0]"
    Device         "Device[0]"
    Monitor        "Monitor[0]"
    DefaultDepth    24
    Option         "usevnc" "no"
    SubSection     "Display"
        Depth       15
        Modes      "1600x1200" "1600x1024" "1600x1000" "1400x1050"
"1280x1024"
                   "1440x900" "1280x960" "1366x768" "1280x800" "1152x864"
"1280x 768"
                   "1024x768" "1280x600" "1024x600" "800x600" "768x576"
"640x480 "
    EndSubSection
    SubSection     "Display"
        Depth       16
        Modes      "1600x1200" "1600x1024" "1600x1000" "1400x1050"
"1280x1024"
                   "1440x900" "1280x960" "1366x768" "1280x800" "1152x864"
"1280x 768"
                   "1024x768" "1280x600" "1024x600" "800x600" "768x576"
"640x480 "
    EndSubSection
    SubSection     "Display"
        Depth       24
        Modes      "1600x1200" "1600x1024" "1600x1000" "1400x1050"
"1280x1024"
                   "1440x900" "1280x960" "1366x768" "1280x800" "1152x864"
"1280x 768"
                   "1024x768" "1280x600" "1024x600" "800x600" "768x576"
"640x480 "
    EndSubSection
   SubSection     "Display"
        Depth       32
        Modes      "1600x1200" "1600x1024" "1600x1000" "1400x1050"
"1280x1024"
                   "1440x900" "1280x960" "1366x768" "1280x800" "1152x864"
"1280x 768"
                   "1024x768" "1280x600" "1024x600" "800x600" "768x576"
"640x480 "
    EndSubSection
    SubSection     "Display"
        Depth       8
        Modes      "1600x1200" "1600x1024" "1600x1000" "1400x1050"
"1280x1024"
                   "1440x900" "1280x960" "1366x768" "1280x800" "1152x864"
"1280x 768"
                   "1024x768" "1280x600" "1024x600" "800x600" "768x576"
"640x480 "
    EndSubSection
EndSection

Section "Screen"
    Identifier     "Screen[1]"
    Device         "Device[1]"
    Monitor        "Monitor[1]"
    DefaultDepth    24
    Option         "usevnc" "no"
    SubSection     "Display"
        Depth       15
        Modes      "1024x768"
    EndSubSection
    SubSection     "Display"
        Depth       16
        Modes      "1024x768"
    EndSubSection
    SubSection     "Display"
        Depth       24
        Modes      "1024x768"
    EndSubSection
   SubSection     "Display"
        Depth       32
        Modes      "1024x768"
    EndSubSection
    SubSection     "Display"
        Depth       8
        Modes      "1024x768"
    EndSubSection
EndSection

Section "Extensions"
EndSection

Mike
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