Отваливается usb мышка

Проверьте свой xorg.conf,

Журнал здоровье так об этом и пишет:

cat synaptics-0.14.6/INSTALL

,,,
,,,,,,,,,

5. Add the "CorePointer" option to the InputDevice line at the
   ServerLayout section:

      Section "ServerLayout"
      ...
              InputDevice "Synaptics Mouse"  "CorePointer"
      ...

   Note! You can not have more than one core pointer, so if you want
   to use an external mouse too, you have to set all mouse input
   devices except one to "AlwaysCore" instead of "CorePointer". For
   example:

      Section "ServerLayout"
      ...
              InputDevice    "Mouse0" "CorePointer"
              InputDevice    "Synaptics Mouse" "AlwaysCore"
      ...
      Section "InputDevice"
      ...
              Identifier  "Mouse0"
              Option      "Device" "/dev/input/mice"
      ...