$uname -a
Linux ubuntu 3.2.0-31-generic #50-Ubuntu SMP Fri Sep 7 16:16:45 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

$ cat /proc/bus/input/devices
I: Bus=0019 Vendor=0000 Product=0001 Version=0000
N: Name="Power Button"
P: Phys=LNXPWRBN/button/input0
S: Sysfs=/devices/LNXSYSTM:00/LNXPWRBN:00/input/input0
U: Uniq=
H: Handlers=kbd event0
B: PROP=0
B: EV=3
B: KEY=10000000000000 0

I: Bus=0011 Vendor=0001 Product=0001 Version=ab41
N: Name="AT Translated Set 2 keyboard"
P: Phys=isa0060/serio0/input0
S: Sysfs=/devices/platform/i8042/serio0/input/input1
U: Uniq=
H: Handlers=sysrq kbd event1
B: PROP=0
B: EV=120013
B: KEY=402000000 3803078f800d001 feffffdfffefffff fffffffffffffffe
B: MSC=10
B: LED=7

I: Bus=0011 Vendor=0002 Product=0005 Version=0000
N: Name="ImPS/2 Generic Wheel Mouse"
P: Phys=isa0060/serio1/input0
S: Sysfs=/devices/platform/i8042/serio1/input/input4
U: Uniq=
H: Handlers=mouse0 event2
B: PROP=0
B: EV=7
B: KEY=70000 0 0 0 0
B: REL=103

I: Bus=0003 Vendor=0e0f Product=0003 Version=0110
N: Name="VMware VMware Virtual USB Mouse"
P: Phys=usb-0000:02:00.0-1/input0
S: Sysfs=/devices/pci0000:00/0000:00:11.0/0000:02:00.0/usb2/2-1/2-1:1.0/input/input5
U: Uniq=
H: Handlers=mouse1 event3 js0
B: PROP=0
B: EV=1f
B: KEY=ffff0000 0 0 0 0
B: REL=140
B: ABS=3
B: MSC=10

I: Bus=0003 Vendor=0e0f Product=0003 Version=0110
N: Name="VMware VMware Virtual USB Mouse"
P: Phys=usb-0000:02:00.0-1/input1
S: Sysfs=/devices/pci0000:00/0000:00:11.0/0000:02:00.0/usb2/2-1/2-1:1.1/input/input6
U: Uniq=
H: Handlers=mouse2 event4
B: PROP=0
B: EV=17
B: KEY=ffff0000 0 0 0 0
B: REL=143
B: MSC=10

$ sudo ls -l /proc/$(pgrep Xorg)/fd

total 0
l-wx------ 1 root root 64 Jun 27 09:43 0 -> /var/log/Xorg.0.log
lrwx------ 1 root root 64 Jun 27 09:43 1 -> socket:[9032]
lrwx------ 1 root root 64 Jun 27 09:43 10 -> socket:[11288]
lrwx------ 1 root root 64 Jun 27 09:43 11 -> /dev/input/event0
lrwx------ 1 root root 64 Jun 27 09:43 12 -> /dev/input/event3
lrwx------ 1 root root 64 Jun 27 09:43 13 -> /dev/input/event4
lrwx------ 1 root root 64 Jun 27 09:43 14 -> /dev/input/event1
lrwx------ 1 root root 64 Jun 27 09:43 15 -> /dev/input/event2
lrwx------ 1 root root 64 Jun 27 09:43 16 -> socket:[11297]
lrwx------ 1 root root 64 Jun 27 09:43 17 -> socket:[13681]
lrwx------ 1 root root 64 Jun 27 09:43 18 -> socket:[13690]
lrwx------ 1 root root 64 Jun 27 09:43 19 -> socket:[13693]
l-wx------ 1 root root 64 Jun 27 09:43 2 -> /var/log/lightdm/x-0.log
lrwx------ 1 root root 64 Jun 27 09:43 20 -> socket:[12778]
lrwx------ 1 root root 64 Jun 27 09:43 21 -> socket:[11883]
lrwx------ 1 root root 64 Jun 27 09:43 22 -> socket:[10176]
lrwx------ 1 root root 64 Jun 27 09:43 23 -> socket:[11896]
lrwx------ 1 root root 64 Jun 27 09:43 24 -> socket:[13794]
lrwx------ 1 root root 64 Jun 27 09:43 25 -> socket:[12867]
lrwx------ 1 root root 64 Jun 27 09:43 26 -> socket:[11905]
lrwx------ 1 root root 64 Jun 27 09:43 27 -> socket:[13842]
lrwx------ 1 root root 64 Jun 27 09:43 28 -> socket:[12880]
lrwx------ 1 root root 64 Jun 27 09:43 29 -> socket:[12889]
lrwx------ 1 root root 64 Jun 27 09:43 3 -> socket:[9033]
lrwx------ 1 root root 64 Jun 27 09:43 30 -> socket:[10224]
lrwx------ 1 root root 64 Jun 27 09:43 31 -> socket:[10229]
lrwx------ 1 root root 64 Jun 27 09:43 32 -> socket:[10239]
lrwx------ 1 root root 64 Jun 27 09:43 33 -> socket:[12902]
lrwx------ 1 root root 64 Jun 27 09:43 34 -> socket:[14349]
lrwx------ 1 root root 64 Jun 27 09:43 35 -> socket:[13926]
lrwx------ 1 root root 64 Jun 27 09:43 36 -> socket:[14154]
lrwx------ 1 root root 64 Jun 27 09:43 37 -> socket:[13941]
lrwx------ 1 root root 64 Jun 27 09:43 38 -> socket:[13016]
lrwx------ 1 root root 64 Jun 27 09:43 39 -> socket:[12118]
lr-x------ 1 root root 64 Jun 27 09:43 4 -> /usr/lib/xorg/protocol.txt
lrwx------ 1 root root 64 Jun 27 09:43 40 -> socket:[14450]
lrwx------ 1 root root 64 Jun 27 09:43 41 -> socket:[14617]
lrwx------ 1 root root 64 Jun 27 09:43 42 -> socket:[14688]
lrwx------ 1 root root 64 Jun 27 09:43 43 -> socket:[14704]
lrwx------ 1 root root 64 Jun 27 09:43 44 -> socket:[16426]
lrwx------ 1 root root 64 Jun 27 09:43 45 -> socket:[14746]
l-wx------ 1 root root 64 Jun 27 09:43 5 -> /proc/mtrr
lrwx------ 1 root root 64 Jun 27 09:43 6 -> socket:[9306]
lrwx------ 1 root root 64 Jun 27 09:43 7 -> /dev/tty7
lrwx------ 1 root root 64 Jun 27 09:43 8 -> /dev/vga_arbiter
lrwx------ 1 root root 64 Jun 27 09:43 9 -> /dev/dri/card0