Comment 6 for bug 31238

Fantastic! That's the best report I've seen in a while! The only thing I
don't understand is what the 'Found: Not/Yes' line means.

To help you understand them '0x9c' is the enter key being released after
you've type the command. The two similar sequences are sent, the second of
which is 128 higher than the first, these translate into push; release with
the extra top-bit set.

> Combination of keys: Fn+esc 0xe0 0x1f

Is there any writing/picture associated with this key. Does it do anything
in MS Windows? I Got most of the other unclear meanings from:

  http://img150.imageshack.us/my.php?image=dsc032192ap.jpg

but I can't see Fn-Esc on there (too far off the left side).

> Combination of keys: Fn+F1 0xe0 0x75 Help
> Combination of keys: Fn+F2 0x1d 0x19 0x99 0x9d Print

Literally: Ctrl-down, 'P'-down... a plain Ctrl-P, easy!

> Combination of keys: Fn+F3 0xe0 0x32 Web
> Combination of keys: Fn+F4 ??? External VGA

Can you do a 'sudo tail -0f /var/log/acpid' in the background (maybe over
SSH if the system dies). Pressing it again should rotate between Internal,
External and Both. It should produce an ACPI event ...hopefully.

> Combination of keys: Fn+F5 0xe0 0x5f Suspend
> Combination of keys: Fn+F6 0xe0 0x12 Lock Screen
> Combination of keys: Fn+F7 ??? Brightness Down
> Combination of keys: Fn+F8 ??? Brightness Up

Brightness Controls are probably ACPI.

> Combination of keys: Fn+F9 0xe0 0x22 Media Play/Pause
> Combination of keys: Fn+F10 0xe0 0x24 Media Stop
> Combination of keys: Fn+F11 0xe0 0x10 Media Previous Song
> Combination of keys: Fn+F12 0xe0 0x19 Media Next Song
> Combination of keys: Fn+despl 0x45

Literally, 'Num_Lock' ...which X will probably misinterpret and use to turn
on MouseKeys. When you press this under X, does the 'Num Lock' LED come on?

> Combination of keys: Fn+pausa 0xe1 0x1d 0x45 0xe1 0x9d 0xc5 Pause/Break
> Combination of keys: Fn+ins 0xe0 0x2a 0xe0 0x37 PrintScreen
> Combination of keys: Fn+supr 0xe0 0x2a 0xe0 0x37 PrintScreen
> Combination of keys: Fn+Enter 0xe0 0x1c Keypad_Enter

These are the 'normal' Pause/Break and PrintScreen keys and Keypad_Enter
sequences, they are just moved because there isn't space for them normally.

> Button Wireless: ??? On/Off Wireless (On: ignited light)

Check 'sudo tail -0f /var/log/acpid' for an ACPI event. If the LED is tied
to the keypress it may well be a "hardware" rf_kill switch.

> Sound Down: 0xe0 0x2e Volume Down
> Sound Down: 0xe0 0x30 Volume Up
> Sound on/off: 0xe0 0x20 Volume Mute

Can you check that if Mute allows sends the same keycode, or if it sends two
different keycodes depending on whether it's going Mute->Unmute or instead
Unmute->Mute.

Finally, could you run the following:

  for s in system-{manufacturer,product-name} system-version ; do sudo dmidecode -s $s ; done

so that I can identify your laptop.

Many Thanks, that is an aweful lot of good-quality data you provided!
 -Paul