Penmount 9000 RS232 + Ubuntu 7.04 + Penmount Ubuntu drivers 2.0 =Touch screen works fine,  sometimes X crashes (not always) and restarts by itself inconsistently....

After installing penmount drivers, the X crashes/restarts automatically on ubuntu 7.04 Desktop Edition.

We see in syslog “repro gdm[4895]: gdm_slave_xioerror_handler: Fatal X error - Restarting :0 “

X Window System Version 7.2.0
Release Date: 22 January 2007
X Protocol Version 11, Revision 0, Release 7.2

CPU：Intel Celeron M 1.5 GHz RAM：1GB
Motherboard：Intel 915GM express chipset
VGA Chip & Driver：Mobile 915GM/GMS/910GML Express

Touch panet □ 5-Wire

Model AFL-15B-915-CM370/WT-R/1GB-R11

Xorg.conf
# /etc/X11/xorg.conf (xorg X Window System server configuration file)
#
# This file was generated by dexconf, the Debian X Configuration tool, using
# values from the debconf database.
#
# Edit this file with caution, and see the xorg.conf(5) manual page.
# (Type "man xorg.conf" at the shell prompt.)
#
# This file is automatically updated on xserver-xorg package upgrades *only*
# if it has not been modified since the last upgrade of the xserver-xorg
# package.
#
# If you have edited this file but would like it to be automatically updated
# again, run the following command:
# sudo dpkg-reconfigure -phigh xserver-xorg

Section "Files"
 FontPath "/usr/share/fonts/X11/misc"
 FontPath "/usr/share/fonts/X11/cyrillic"
 FontPath "/usr/share/fonts/X11/100dpi/:unscaled"
 FontPath "/usr/share/fonts/X11/75dpi/:unscaled"
 FontPath "/usr/share/fonts/X11/Type1"
 FontPath "/usr/share/fonts/X11/100dpi"
 FontPath "/usr/share/fonts/X11/75dpi"
 # path to defoma fonts
 FontPath "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType"
EndSection

Section "Module"
 Load "i2c"
 Load "bitmap"
 Load "ddc"
 Load "dri"
 Load "extmod"
 Load "freetype"
 Load "glx"
 Load "int10"
 Load "vbe"
EndSection

Section "InputDevice"
 Identifier "Generic Keyboard"
 Driver "kbd"
 Option "CoreKeyboard"
 Option "XkbRules" "xorg"
 Option "XkbModel" "pc105"
 Option "XkbLayout" "us"
EndSection

Section "InputDevice"
 Identifier "Configured Mouse"
 Driver "mouse"
 Option "CorePointer"
 Option "Device" "/dev/input/mice"
 Option "Protocol" "ImPS/2"
 Option "ZAxisMapping" "4 5"
 Option "Emulate3Buttons" "true"
EndSection

Section "InputDevice"
 Driver "wacom"
 Identifier "stylus"
 Option "Device" "/dev/input/wacom"
 Option "Type" "stylus"
 Option "ForceDevice" "ISDV4" # Tablet PC ONLY
EndSection

Section "InputDevice"
 Driver "wacom"
 Identifier "eraser"
 Option "Device" "/dev/input/wacom"
 Option "Type" "eraser"
 Option "ForceDevice" "ISDV4" # Tablet PC ONLY
EndSection

Section "InputDevice"
 Driver "wacom"
 Identifier "cursor"
 Option "Device" "/dev/input/wacom"
 Option "Type" "cursor"
 Option "ForceDevice" "ISDV4" # Tablet PC ONLY
EndSection

Section "InputDevice"
 Identifier "PenMount"
 Driver "penmount"
 Option "Protocol" "PM9000"
 Option "Device" "/dev/ttyS3"
 Option "PMode" "1"
 Option "MinX" "10"
 Option "MaxX" "1000"
 Option "MinY" "10"
 Option "MaxY" "1000"
 Option "ADBit" "10"
 Option "Baudrate" "19200"
 Option "Beep" "1" # 0 = no beep, 1 = beep enabled
 Option "PressVol" "100" # volume of beep (press event)
 Option "PressPitch" "880" # pitch of beep (press event)
 Option "PressDur" "15" # length of beep in 10ms (press event)
 Option "ReleaseVol" "0" # volume of beep (release event)
 Option "ReleasePitch" "1200" # pitch of beep (release event)
 Option "ReleaseDur" "10" # len of beep in 10ms (release event)
 Option "RightButton" "0" # right button active in ms
 Option "RightButtonStart" "500" # right button active in ms
 Option "RightButtonEnd" "900" # right button inactive in ms
EndSection

Section "Device"
 Identifier "Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller"
 Driver "i810"
 BusID "PCI:0:2:0"
EndSection

Section "Monitor"
 Identifier "Generic Monitor"
 Option "DPMS"
 HorizSync 28-51
 VertRefresh 43-60
EndSection

Section "Screen"
 Identifier "Default Screen"
 Device "Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller"
 Monitor "Generic Monitor"
 DefaultDepth 24
 SubSection "Display"
  Depth 1
  Modes "1024x768" "800x600" "640x480"
 EndSubSection
 SubSection "Display"
  Depth 4
  Modes "1024x768" "800x600" "640x480"
 EndSubSection
 SubSection "Display"
  Depth 8
  Modes "1024x768" "800x600" "640x480"
 EndSubSection
 SubSection "Display"
  Depth 15
  Modes "1024x768" "800x600" "640x480"
 EndSubSection
 SubSection "Display"
  Depth 16
  Modes "1024x768" "800x600" "640x480"
 EndSubSection
 SubSection "Display"
  Depth 24
  Modes "1024x768" "800x600" "640x480"
 EndSubSection
EndSection

Section "ServerLayout"
 Identifier "Default Layout"
 Screen "Default Screen"
 InputDevice "Generic Keyboard"
 InputDevice "Configured Mouse"
 InputDevice "stylus" "SendCoreEvents"
 InputDevice "cursor" "SendCoreEvents"
 InputDevice "eraser" "SendCoreEvents"
 InputDevice "Penmount" "AlwaysCore"
EndSection

Section "DRI"
 Mode 0666
EndSection