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[Fixed?] Cannot use mouse and touchpad at the same time after upgrade

Update:10-11Source: network consolidation
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Dell Inspiron 6400 laptop, Synaptics touchpad, external wireless USB mouse (Logitech).
Yesterday I did a full system upgrade which among other packages upgraded
[2007-11-08 00:06] upgraded synaptics (0.14.6-2 -> 0.14.6.99-1)
[2007-11-08 00:06] upgraded tzdata (2007h-1 -> 2007i-1)
[2007-11-08 00:06] upgraded xf86-input-keyboard (1.1.1-1 -> 1.2.2-2)
[2007-11-08 00:06] upgraded xf86-input-mouse (1.2.1-1 -> 1.2.3-1)
[2007-11-08 00:06] upgraded xf86-video-i810 (1.7.4-2 -> 1.7.4-6)
[2007-11-08 00:06] upgraded xf86-video-vesa (1.3.0-1 -> 1.3.0-5)
[2007-11-08 00:06] upgraded xorg-server (1.2.0-5 -> 1.4-4)
Before the upgrade, I was able to use both the touchpad and the mouse at the same time, using the following xorg.conf settings:
Section "ServerLayout"
InputDevice "Touchpad" "CorePointer"
InputDevice "USB Mouse" "AlwaysCore"
Section "InputDevice"
Identifier "USB Mouse"
Driver "mouse"
Option "Device" "/dev/input/mice"
Option "SendCoreEvents" "true"
Option "Protocol" "IMPS/2"
EndSection
Section "InputDevice"
Identifier "Touchpad"
Driver "synaptics"
Option "Device" "/dev/psaux"
Option "Protocol" "auto-dev"
EndSection
After the upgrade, the touchpad was still working with these settings but the mouse wasn't.  I then changed the xorg.conf settings as follows:
Section "ServerLayout"
InputDevice "USB Mouse" "CorePointer"
InputDevice "Touchpad" "AlwaysCore"
with the InputDevice sections remaining the same for USB Mouse and Touchpad.  After this change the mouse was working but the touchpad wasn't.  Finally, I changed the xorg.conf settings as follows:
Section "ServerLayout"
InputDevice "Touchpad" "CorePointer"
InputDevice "USBMouse" "SendCoreEvents"
with the InputDevice sections remaining the same for USB Mouse and Touchpad.  This didn't change anything from the last setting: the mouse was working but the touchpad wasn't.
How can I restore the ability to simultaneously use mouse and touchpad?
Last edited by RobF (2007-11-09 20:20:54)

The Best Answer

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Try this:
Move "SendCoreEvents" to the Touchpad line (replacing the "AlwaysCore" bit) and then comment out the USB mouse.  So in the end, it'll look like this:
Section "ServerLayout"
InputDevice "Touchpad" "SendCoreEvents"
# InputDevice "USBMouse"
EndSection
Restart X and see if everything is working right.
PS: You may also want to consider changing the Touchpad device line to "/dev/input/mouse2" instead of "/dev/psaux" as I believe psaux has been deprecated in kernel 2.6.  I could be wrong, but I can tell you that /dev/input/mouse2 works great with the touchpad on my Dell e1505.