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Old 07-26-2010, 03:08 AM   #1
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PS2 mouse is not auto detecting in linux kernel


I am working on linux kernel building and customising for our requirement.
All these days we were using 2.6.9EL5 kernel to create our own Bootable kernel. Lately we moved to as SATA CDROM support was not available during booting with the earlier kernel.
Now with the new kernel i have got all the updates i wanted with respect to hardware detection during booting but having an issue with my PS2 mouse not auto detecting while booting. However i can configure the mouse with the popup that comes during booting by selecting the generic PS2 3 button mouse option. With this my mouse works properly. I am wondering is there a way to make the mouse auto detectable.

I have attached one of the Xconfig file that is part of our process, Hope this helps.

# XFree86 4.0 configuration generated by Xconfigurator

Section "ServerLayout"
Identifier "XFree86 Configured"
Screen 0 "Screen0" 0 0
InputDevice "Mouse0" "CorePointer"
InputDevice "Mouse1"
InputDevice "Keyboard0" "CoreKeyboard"

# By default, Red Hat Linux 6.0 and later use xfs

Section "ServerFlags"
Option "AllowMouseOpenFail" "true"

Section "Files"

Fontpath "unix/:7100"
FontPath "/usr/X11R6/lib/X11/fonts/75dpi:unscaled"
FontPath "/usr/X11R6/lib/X11/fonts/misc"
FontPath "/usr/X11R6/lib/X11/fonts/URW"
FontPath "/usr/X11R6/lib/X11/fonts/75dpi"

# Module loading section

Section "Module"
Load "dbe" # Double-buffering
Load "extmod" # Misc. required extensions
# Load "pex5" # PHIGS for X 3D environment (obsolete)
# Load "record" # X event recorder
# Load "xie" # X Image Extension (obsolete)
# You only need the following two modules if you do not use xfs.
# Load "freetype" # TrueType font handler
# Load "type1" # Adobe Type 1 font handler

Section "InputDevice"
Identifier "Keyboard0"
Driver "keyboard"
Option "XkbRules" "xfree86"
Option "XkbModel" "pc101"
Option "XkbLayout" "us"

Section "InputDevice"
Identifier "Mouse0"
Driver "mouse"
Option "Device" "/dev/psaux"
Option "Protocol" "PS/2"
Option "Emulate3Buttons" "on"
Option "ZAxisMapping" "4 5"

Section "InputDevice"
Identifier "Mouse1"
Driver "mouse"
Option "Device" "/dev/input/mice"
Option "AlwaysCore" "true"
Option "Protocol" "PS/2"
Option "Emulate3Buttons" "on"
Option "ZAxisMapping" "4 5"

Section "Monitor"
Identifier "Generic High Frequency SVGA, 1024x768 @ 70 Hz"
VendorName "Unknown"
ModelName "Unknown"
HorizSync 31.5-50.0
VertRefresh 50-60
Option "dpms"

Section "Device"
Identifier "Linux Frame Buffer"
Driver "fbdev"
BoardName "Unknown"

Section "Screen"
Identifier "Screen0"
Device "Linux Frame Buffer"
Monitor "Generic High Frequency SVGA, 1024x768 @ 70 Hz"
DefaultDepth 8
Subsection "Display"
Depth 8
Modes "800x600"

Please feel free to ask me for any information required.

Thanks in advance
Old 07-26-2010, 03:25 AM   #2
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as root open a terminal and type modprobe psmouse if that does not get it working then you did not enable it in the kernel.
if that does work your start up scripts are not loading the cursor
Old 07-29-2010, 01:02 AM   #3
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Registered: Jul 2010
Location: Bangalore
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Thanks Drakeo, I was able to resolve PS2 issue by tweaking my start script. Thanks for the hint.


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