Comment 16 for bug 112915

On a Dell Latitude D620 I get:

$ cat /proc/bus/input/devices
I: Bus=0017 Vendor=0001 Product=0001 Version=0100
N: Name="Macintosh mouse button emulation"
P: Phys=
S: Sysfs=/devices/virtual/input/input0
U: Uniq=
H: Handlers=mouse0 event0
B: EV=7
B: KEY=70000 0 0 0 0 0 0 0 0
B: REL=3

[snipped keyboard/power buttons/lid switch]

I: Bus=0011 Vendor=0002 Product=0008 Version=0000
N: Name="PS/2 Mouse"
P: Phys=isa0060/serio1/input1
S: Sysfs=/devices/virtual/input/input10
U: Uniq=
H: Handlers=mouse1 event2
B: EV=7
B: KEY=70000 0 0 0 0 0 0 0 0
B: REL=3

I: Bus=0011 Vendor=0002 Product=0008 Version=6337
N: Name="AlpsPS/2 ALPS GlidePoint"
P: Phys=isa0060/serio1/input0
S: Sysfs=/devices/platform/i8042/serio1/input/input11
U: Uniq=
H: Handlers=mouse2 event3
B: EV=f
B: KEY=420 0 70000 0 0 0 0 0 0 0 0
B: REL=3
B: ABS=1000003

The laptop has a trackpad and a trackpoint (one of those nipple-mouse things). I think the GlidePoint mentioned above is the latter. Not sure what the other two are. (There's no mouse plugged in right now.)

Note that gsynaptics (I think I installed it by hand) has a "disable" option that works only on the trackpad (the nipple keeps working), it can enable tapping (and change tapping speed), and can enable/disable vertical scrolling on the trackpad's edge. So it can do some detection. However, the sensitivity setting does nothing whatsoever.

(Note that I think it's preferable that the sensitivity settings for a mouse/trackpad/trackpoint be separated. So the mouse settings applet shouldn't do anything with the trackpad unless it presents it as a separate option.)

The sensitivity setting in the mouse applet doesn't affect the trackpoint, either. However, the acceleration setting affects _all_ of them (mouse, trackpad, trackpoint). So it's impossible to balance them out.