Public bug reported:

Using a generic PlayStation like game pad (Logitech Dual Action 2), the
automatic configuration has major usability drawbacks:

- The analog range is too short, making movement hard. In Super Smash
Bros, characters don't jump diagonally.

- C-buttons, instead of isolated as in the original console game pad,
are placed in the second analog. This makes pressing buttons by accident
a frequent issue. In Golden Eye camera movement prevents the game from
been playable, where in Road Rash you frequently discard weapons
permanently.

- Z-trigger and Left-trigger are placed both in the left triggers of the
game pad. But you usually need to press both simultaneously, where that
placement only allows pressing one button at a time.

The solution is this:

- Ignore the console's native analog range, and choose a wider one.

- Place C-buttons in the game pad triggers.

- Place the Z-trigger in the regular button's side, where pressing the
rest is usable.

After testing thoroughly various configurations with multiple games, the
following seems to be the one that responds better in any circumstance
(config file):

# The minimum absolute value of the SDL analog joystick axis to move the N64 
controller axis value from 0.  For X, Y axes.
AnalogDeadzone = "338,338"
# An absolute value of the SDL joystick axis >= AnalogPeak will saturate the 
N64 controller axis value (at 80).  For X, Y axes. For each axis, this must be 
greater than the corresponding AnalogDeadzone value
AnalogPeak = "21200,21200"
# Digital button configuration mappings
DPad R = "axis(4+) hat(0 Right)"
DPad L = "axis(4-) hat(0 Left)"
DPad D = "axis(5+) hat(0 Down)"
DPad U = "axis(5-) hat(0 Up)"
Start = "button(9)"
Z Trig = "button(2)"
B Button = "button(0)"
A Button = "button(1)"
C Button R = "button(5)"
C Button L = "button(4)"
C Button D = "button(7)"
C Button U = "button(6)"
R Trig = "button(3)"
L Trig = "button(8)"
Mempak switch = ""
Rumblepak switch = ""
# Analog axis configuration mappings
X Axis = "axis(0-,0+)"
Y Axis = "axis(1-,1+)"

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: mupen64plus-input-sdl 2.5-3
ProcVersionSignature: Ubuntu 4.4.0-36.55-generic 4.4.16
Uname: Linux 4.4.0-36-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CurrentDesktop: Unity
Date: Fri Sep 16 17:36:29 2016
InstallationDate: Installed on 2013-01-25 (1329 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
SourcePackage: mupen64plus-input-sdl
UpgradeStatus: Upgraded to xenial on 2016-08-05 (41 days ago)

** Affects: hundredpapercuts
     Importance: Undecided
         Status: New

** Affects: mupen64plus
     Importance: Undecided
         Status: New

** Affects: mupen64plus-input-sdl (Ubuntu)
     Importance: Low
         Status: New


** Tags: amd64 apport-bug third-party-packages xenial

** Changed in: mupen64plus-input-sdl (Ubuntu)
   Importance: Undecided => Low

** Also affects: mupen64plus
   Importance: Undecided
       Status: New

** Also affects: hundredpapercuts
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1624463

Title:
  The default gamepad config is quite unusable

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