XFree86 error when I open a second display

[Ferruccio Zamuner <nonsolosoft@xxxxxxxx>]

Dear XFree86 group,

On a single PC with

Section "Device"
    Identifier  "ATI Mach64 3D Rage II"
    Driver      "ati"
    #VideoRam    8192
    # Insert Clocks lines here if appropriate
EndSection

every time I try to open a second display I got the error

Fatal server error:
xf86OpenConsole: VT_SETMODE VT_PROCESS failed


On other PC with different video card I've got not any error.
Instead with this single PC I've the same problem since FreeBSD 4.8 (now I'm 
running FreeBSD 4.10).


I hope to your help or suggestion to solve this problem.


Thank you in advance,         \fer
XFree86 Version 4.3.0
Release Date: 27 February 2003
X Protocol Version 11, Revision 0, Release 6.6
Build Operating System: FreeBSD 4.10 i386 [ELF] 
Build Date: 08 April 2004
	Before reporting problems, check http://www.XFree86.Org/
	to make sure that you have the latest version.
Module Loader present
Markers: (--) probed, (**) from config file, (==) default setting,
         (++) from command line, (!!) notice, (II) informational,
         (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/var/log/XFree86.1.log", Time: Fri Jun  4 18:47:47 2004
(==) Using config file: "/etc/X11/XF86Config"
(==) ServerLayout "Simple Layout"
(**) |-->Screen "Screen 1" (0)
(**) |   |-->Monitor "SonyE100"
(**) |   |-->Device "ATI Mach64 3D Rage II"
(**) |-->Input Device "Mouse1"
(**) |-->Input Device "Keyboard0"
(**) Option "AutoRepeat" "500 30"
(**) Option "XkbRules" "xfree86"
(**) XKB: rules: "xfree86"
(**) Option "XkbModel" "logiinternet"
(**) XKB: model: "logiinternet"
(**) Option "XkbLayout" "it"
(**) XKB: layout: "it"
(==) Keyboard: CustomKeycode disabled
(WW) The directory "/usr/local/AbiSuite/fonts/" does not exist.
	Entry deleted from font path.
(**) FontPath set to "/usr/X11R6/lib/X11/fonts/local/,/usr/X11R6/lib/X11/fonts/misc/,/usr/X11R6/lib/X11/fonts/100dpi/:unscaled,/usr/X11R6/lib/X11/fonts/75dpi/:unscaled,/usr/X11R6/lib/X11/fonts/Type1/,/usr/X11R6/lib/X11/fonts/100dpi/,/usr/X11R6/lib/X11/fonts/75dpi/,/usr/X11R6/lib/X11/fonts/bitstream-vera/"
(**) RgbPath set to "/usr/X11R6/lib/X11/rgb"
(==) ModulePath set to "/usr/X11R6/lib/modules"
(--) Using syscons driver with X support (version 2.0)
(++) using VT number 9


Fatal server error:
xf86OpenConsole: VT_SETMODE VT_PROCESS failed


When reporting a problem related to a server crash, please send
the full server output, not just the last messages.
This can be found in the log file "/var/log/XFree86.1.log".
Please report problems to xfree86@xxxxxxxxxxxx