[LG Optimus L9 P760, P765, P768, P769] leolawliet:
Check your Generic.kl file, I tweaked one line in it and all of my remote headsets worked without a problem. See what I highlighted in RED?

Although I don't think "WAKE" is necessary to have on it, I forgot if it made a difference.

# Copyright (C) 2010 The Android Open Source Project

#

# Licensed under the Apache License, Version 2.0 (the "License");

# you may not use this file except in compliance with the License.

# You may obtain a copy of the License at

#

# http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

#

# Generic key layout file for full alphabetic US English PC style external keyboards.

#

# This file is intentionally very generic and is intended to support a broad rang of keyboards.

# Do not edit the generic key layout to support a specific keyboard; instead, create

# a new key layout file with the required keyboard configuration.

#

key 1 ESCAPE

key 2 1

key 3 2

key 4 3

key 5 4

key 6 5

key 7 6

key 8 7

key 9 8

key 10 9

key 11 0

key 12 MINUS

key 13 EQUALS

key 14 DEL

key 15 TAB

key 16 Q

key 17 W

key 18 E

key 19 R

key 20 T

key 21 Y

key 22 U

key 23 I

key 24 O

key 25 P

key 26 LEFT_BRACKET

key 27 RIGHT_BRACKET

key 28 ENTER

key 29 CTRL_LEFT

key 30 A

key 31 S

key 32 D

key 33 F

key 34 G

key 35 H

key 36 J

key 37 K

key 38 L

key 39 SEMICOLON

key 40 APOSTROPHE

key 41 GRAVE

key 42 SHIFT_LEFT

key 43 BACKSLASH

key 44 Z

key 45 X

key 46 C

key 47 V

key 48 B

key 49 N

key 50 M

key 51 COMMA

key 52 PERIOD

key 53 SLASH

key 54 SHIFT_RIGHT

key 55 NUMPAD_MULTIPLY

key 56 ALT_LEFT

key 57 SPACE

key 58 CAPS_LOCK

key 59 F1

key 60 F2

key 61 F3

key 62 F4

key 63 F5

key 64 F6

key 65 F7

key 66 F8

key 67 F9

key 68 F10

key 69 NUM_LOCK

key 70 SCROLL_LOCK

key 71 NUMPAD_7

key 72 NUMPAD_8

key 73 NUMPAD_9

key 74 NUMPAD_SUBTRACT

key 75 NUMPAD_4

key 76 NUMPAD_5

key 77 NUMPAD_6

key 78 NUMPAD_ADD

key 79 NUMPAD_1

key 80 NUMPAD_2

key 81 NUMPAD_3

key 82 NUMPAD_0

key 83 NUMPAD_DOT

# key 84 (undefined)

key 85 ZENKAKU_HANKAKU

key 86 BACKSLASH

key 87 F11

key 88 F12

key 89 RO

# key 90 "KEY_KATAKANA"

# key 91 "KEY_HIRAGANA"

key 92 HENKAN

key 93 KATAKANA_HIRAGANA

key 94 MUHENKAN

key 95 NUMPAD_COMMA

key 96 NUMPAD_ENTER

key 97 CTRL_RIGHT

key 98 NUMPAD_DIVIDE

key 99 SYSRQ

key 100 ALT_RIGHT

# key 101 "KEY_LINEFEED"

key 102 MOVE_HOME

key 103 DPAD_UP

key 104 PAGE_UP

key 105 DPAD_LEFT

key 106 DPAD_RIGHT

key 107 MOVE_END

key 108 DPAD_DOWN

key 109 PAGE_DOWN

key 110 INSERT

key 111 FORWARD_DEL

# key 112 "KEY_MACRO"

key 113 VOLUME_MUTE

key 114 VOLUME_DOWN WAKE_DROPPED

key 115 VOLUME_UP WAKE_DROPPED

key 116 POWER WAKE

key 117 NUMPAD_EQUALS

# key 118 "KEY_KPPLUSMINUS"

key 119 BREAK

# key 120 (undefined)

key 121 NUMPAD_COMMA

key 122 KANA

key 123 EISU

key 124 YEN

key 125 META_LEFT

key 126 META_RIGHT

key 127 MENU WAKE_DROPPED

key 128 MEDIA_STOP

# key 129 "KEY_AGAIN"

# key 130 "KEY_PROPS"

# key 131 "KEY_UNDO"

# key 132 "KEY_FRONT"

# key 133 "KEY_COPY"

# key 134 "KEY_OPEN"

# key 135 "KEY_PASTE"

# key 136 "KEY_FIND"

# key 137 "KEY_CUT"

# key 138 "KEY_HELP"

key 139 MENU WAKE_DROPPED

key 140 CALCULATOR

# key 141 "KEY_SETUP"

key 142 POWER WAKE

key 143 POWER WAKE

# key 144 "KEY_FILE"

# key 145 "KEY_SENDFILE"

# key 146 "KEY_DELETEFILE"

# key 147 "KEY_XFER"

# key 148 "KEY_PROG1"

# key 149 "KEY_PROG2"

key 150 EXPLORER

# key 151 "KEY_MSDOS"

key 152 POWER WAKE

# key 153 "KEY_DIRECTION"

# key 154 "KEY_CYCLEWINDOWS"

key 155 ENVELOPE

key 156 BOOKMARK

# key 157 "KEY_COMPUTER"

key 158 BACK WAKE_DROPPED

key 159 FORWARD

key 160 MEDIA_CLOSE

key 161 MEDIA_EJECT

key 162 MEDIA_EJECT

key 163 MEDIA_NEXT

key 164 MEDIA_PLAY_PAUSE

key 165 MEDIA_PREVIOUS

key 166 MEDIA_STOP

key 167 MEDIA_RECORD

key 168 MEDIA_REWIND

key 169 CALL

# key 170 "KEY_ISO"

key 171 MUSIC

key 172 HOME WAKE

# key 173 "KEY_REFRESH"

# key 174 "KEY_EXIT"

# key 175 "KEY_MOVE"

# key 176 "KEY_EDIT"

key 177 PAGE_UP

key 178 PAGE_DOWN

key 179 NUMPAD_LEFT_PAREN

key 180 NUMPAD_RIGHT_PAREN

# key 181 "KEY_NEW"

# key 182 "KEY_REDO"

# key 183 F13

# key 184 F14

# key 185 F15

# key 186 F16

# key 187 F17

# key 188 F18

# key 189 F19

# key 190 F20

# key 191 F21

# key 192 F22

# key 193 F23

# key 194 F24

# key 195 (undefined)

# key 196 (undefined)

# key 197 (undefined)

# key 198 (undefined)

# key 199 (undefined)

key 200 MEDIA_PLAY

key 201 MEDIA_PAUSE

# key 202 "KEY_PROG3"

# key 203 "KEY_PROG4"

# key 204 (undefined)

# key 205 "KEY_SUSPEND"

# key 206 "KEY_CLOSE"

key 207 MEDIA_PLAY

key 208 MEDIA_FAST_FORWARD

# key 209 "KEY_BASSBOOST"

# key 210 "KEY_PRINT"

# key 211 "KEY_HP"

key 212 CAMERA

key 213 MUSIC

# key 214 "KEY_QUESTION"

key 215 ENVELOPE

# key 216 "KEY_CHAT"

key 217 SEARCH

# key 218 "KEY_CONNECT"

# key 219 "KEY_FINANCE"

# key 220 "KEY_SPORT"

# key 221 "KEY_SHOP"

# key 222 "KEY_ALTERASE"

# key 223 "KEY_CANCEL"

# key 224 "KEY_BRIGHTNESSDOWN"

# key 225 "KEY_BRIGHTNESSUP"

key 250 HEADSETHOOK WAKE

key 256 BUTTON_1

key 257 BUTTON_2

key 258 BUTTON_3

key 259 BUTTON_4

key 260 BUTTON_5

key 261 BUTTON_6

key 262 BUTTON_7

key 263 BUTTON_8

key 264 BUTTON_9

key 265 BUTTON_10

key 266 BUTTON_11

key 267 BUTTON_12

key 268 BUTTON_13

key 269 BUTTON_14

key 270 BUTTON_15

key 271 BUTTON_16

key 288 BUTTON_1

key 289 BUTTON_2

key 290 BUTTON_3

key 291 BUTTON_4

key 292 BUTTON_5

key 293 BUTTON_6

key 294 BUTTON_7

key 295 BUTTON_8

key 296 BUTTON_9

key 297 BUTTON_10

key 298 BUTTON_11

key 299 BUTTON_12

key 300 BUTTON_13

key 301 BUTTON_14

key 302 BUTTON_15

key 303 BUTTON_16

key 304 BUTTON_A

key 305 BUTTON_B

key 306 BUTTON_C

key 307 BUTTON_X

key 308 BUTTON_Y

key 309 BUTTON_Z

key 310 BUTTON_L1

key 311 BUTTON_R1

key 312 BUTTON_L2

key 313 BUTTON_R2

key 314 BUTTON_SELECT

key 315 BUTTON_START

key 316 BUTTON_MODE

key 317 BUTTON_THUMBL

key 318 BUTTON_THUMBR

# key 352 "KEY_OK"

key 353 DPAD_CENTER

# key 354 "KEY_GOTO"

# key 355 "KEY_CLEAR"

# key 356 "KEY_POWER2"

# key 357 "KEY_OPTION"

# key 358 "KEY_INFO"

# key 359 "KEY_TIME"

# key 360 "KEY_VENDOR"

# key 361 "KEY_ARCHIVE"

key 362 GUIDE

# key 363 "KEY_CHANNEL"

# key 364 "KEY_FAVORITES"

# key 365 "KEY_EPG"

key 366 DVR

# key 367 "KEY_MHP"

# key 368 "KEY_LANGUAGE"

# key 369 "KEY_TITLE"

# key 370 "KEY_SUBTITLE"

# key 371 "KEY_ANGLE"

# key 372 "KEY_ZOOM"

# key 373 "KEY_MODE"

# key 374 "KEY_KEYBOARD"

# key 375 "KEY_SCREEN"

# key 376 "KEY_PC"

key 377 TV

# key 378 "KEY_TV2"

# key 379 "KEY_VCR"

# key 380 "KEY_VCR2"

# key 381 "KEY_SAT"

# key 382 "KEY_SAT2"

# key 383 "KEY_CD"

# key 384 "KEY_TAPE"

# key 385 "KEY_RADIO"

# key 386 "KEY_TUNER"

# key 387 "KEY_PLAYER"

# key 388 "KEY_TEXT"

# key 389 "KEY_DVD"

# key 390 "KEY_AUX"

# key 391 "KEY_MP3"

# key 392 "KEY_AUDIO"

# key 393 "KEY_VIDEO"

# key 394 "KEY_DIRECTORY"

# key 395 "KEY_LIST"

# key 396 "KEY_MEMO"

key 397 CALENDAR

# key 398 "KEY_RED"

# key 399 "KEY_GREEN"

# key 400 "KEY_YELLOW"

# key 401 "KEY_BLUE"

key 402 CHANNEL_UP

key 403 CHANNEL_DOWN

# key 404 "KEY_FIRST"

# key 405 "KEY_LAST"

# key 406 "KEY_AB"

# key 407 "KEY_NEXT"

# key 408 "KEY_RESTART"

# key 409 "KEY_SLOW"

# key 410 "KEY_SHUFFLE"

# key 411 "KEY_BREAK"

# key 412 "KEY_PREVIOUS"

# key 413 "KEY_DIGITS"

# key 414 "KEY_TEEN"

# key 415 "KEY_TWEN"

key 429 CONTACTS

# key 448 "KEY_DEL_EOL"

# key 449 "KEY_DEL_EOS"

# key 450 "KEY_INS_LINE"

# key 451 "KEY_DEL_LINE"

key 464 FUNCTION

key 465 ESCAPE FUNCTION

key 466 F1 FUNCTION

key 467 F2 FUNCTION

key 468 F3 FUNCTION

key 469 F4 FUNCTION

key 470 F5 FUNCTION

key 471 F6 FUNCTION

key 472 F7 FUNCTION

key 473 F8 FUNCTION

key 474 F9 FUNCTION

key 475 F10 FUNCTION

key 476 F11 FUNCTION

key 477 F12 FUNCTION

key 478 1 FUNCTION

key 479 2 FUNCTION

key 480 D FUNCTION

key 481 E FUNCTION

key 482 F FUNCTION

key 483 S FUNCTION

key 484 B FUNCTION

# key 497 KEY_BRL_DOT1

# key 498 KEY_BRL_DOT2

# key 499 KEY_BRL_DOT3

# key 500 KEY_BRL_DOT4

# key 501 KEY_BRL_DOT5

# key 502 KEY_BRL_DOT6

# key 503 KEY_BRL_DOT7

# key 504 KEY_BRL_DOT8

# Joystick and game controller axes.

# Axes that are not mapped will be assigned generic axis numbers by the input subsystem.

axis 0x00 X

axis 0x01 Y

axis 0x02 Z

axis 0x03 RX

axis 0x04 RY

axis 0x05 RZ

axis 0x06 THROTTLE

axis 0x07 RUDDER

axis 0x08 WHEEL

axis 0x09 GAS

axis 0x0a BRAKE

axis 0x10 HAT_X

axis 0x11 HAT_Y