Howto | Fix nxclient arrow keys

Introduction

I recently that the arrow keys on my laptop were not working correctly, usually triggering knapshot. The following webpage addresses this concern. You should go there now, only read on if that page is gone.

Keyboard mapping

The UK keyboard layout of my laptop is not correctly mapped by the nxclient (which sees it as pc102 instead of pc105). For instance, on a KDE session, the arrow keys are not working, and the Up key thinks it is a PrntScr key and starts ksnapshot! Not really handy… Here is a manual workaround.

When connected remotely to the server, open a terminal and register this keymap configuration with X.

Please note that these instructions are for the XO and may not be correct - I will correct the following as/when I have time or find problems.

$ xmodmap xmodmap.keys

Content of the xmodmap.keys file
keycode   8 =
keycode   9 = Escape
keycode  10 = 1 exclam exclamdown exclamdown exclamdown exclamdown
keycode  11 = 2 at notsign notsign notsign notsign
keycode  12 = 3 numbersign U0300 U0300 U0300 U0300
keycode  13 = 4 dollar U0301 U0301 U0301 U0301
keycode  14 = 5 percent U0306 U0306 U0306 U0306
keycode  15 = 6 asciicircum U030A U030A U030A U030A
keycode  16 = 7 ampersand U0302 U0302 U0302 U0302
keycode  17 = 8 asterisk U0324 U0324 U0324 U0324
keycode  18 = 9 parenleft U0307 U0307 U0307 U0307
keycode  19 = 0 parenright U0308 U0308 U0308 U0308
keycode  20 = minus underscore U0304 U0304 U0304 U0304
keycode  21 = equal plus U0303 U0303 U0303 U0303
keycode  22 = BackSpace Terminate_Server
keycode  23 = Tab ISO_Left_Tab
keycode  24 = q Q Greek_omega Greek_OMEGA Greek_omega Greek_OMEGA
keycode  25 = w W oslash Oslash oslash Oslash
keycode  26 = e E oe OE oe OE
keycode  27 = r R U0327 U0327 U0327 U0327
keycode  28 = t T U032E U032E U032E U032E
keycode  29 = y Y U0325 U0325 U0325 U0325
keycode  30 = u U U032D U032D U032D U032D
keycode  31 = i I U032C U032C U032C U032C
keycode  32 = o O U0323 U0323 U0323 U0323
keycode  33 = p P U0304 U0304 U0304 U0304
keycode  34 = bracketleft braceleft U0331 U0331 U0331 U0331
keycode  35 = bracketright braceright U0330 U0330 U0330 U0330
keycode  36 = Return
keycode  37 = Control_L
keycode  38 = a A ae AE ae AE
keycode  39 = s S ssharp ssharp ssharp ssharp
keycode  40 = d D eth ETH eth ETH
keycode  41 = f F thorn THORN thorn THORN
keycode  42 = g G
keycode  43 = h H sterling sterling sterling sterling
keycode  44 = j J EuroSign EuroSign EuroSign EuroSign
keycode  45 = k K
keycode  46 = l L
keycode  47 = semicolon colon masculine ordfeminine masculine ordfeminine
keycode  48 = apostrophe quotedbl currency currency currency currency
keycode  49 = grave asciitilde dead_grave dead_tilde dead_grave dead_tilde
keycode  50 = Shift_L
keycode  51 = backslash bar section section section section
keycode  52 = z Z
keycode  53 = x X
keycode  54 = c C ccedilla Ccedilla ccedilla Ccedilla
keycode  55 = v V
keycode  56 = b B
keycode  57 = n N ntilde Ntilde ntilde Ntilde
keycode  58 = m M mu mu mu mu
keycode  59 = comma less guillemotleft guillemotleft guillemotleft guillemotleft
keycode  60 = period greater guillemotright guillemotright guillemotright guillemotright
keycode  61 = slash question questiondown questiondown questiondown questiondown
keycode  62 = Shift_R
keycode  63 = KP_Multiply XF86_ClearGrab
keycode  64 = Alt_L Meta_L
keycode  65 = space
keycode  66 = Caps_Lock
keycode  67 = F1 XF86_Switch_VT_1
keycode  68 = F2 XF86_Switch_VT_2
keycode  69 = F3 XF86_Switch_VT_3
keycode  70 = F4 XF86_Switch_VT_4
keycode  71 = F5 XF86_Switch_VT_5
keycode  72 = F6 XF86_Switch_VT_6
keycode  73 = F7 XF86_Switch_VT_7
keycode  74 = F8 XF86_Switch_VT_8
keycode  75 = F9 XF86_Switch_VT_9
keycode  76 = F10 XF86_Switch_VT_10
keycode  77 = Num_Lock Pointer_EnableKeys
keycode  78 = Scroll_Lock
keycode  79 = KP_Home KP_7
keycode  80 = KP_Up KP_8
keycode  81 = KP_Prior KP_9
keycode  82 = KP_Subtract XF86_Prev_VMode
keycode  83 = KP_Left KP_4
keycode  84 = KP_Begin KP_5
keycode  85 = KP_Right KP_6
keycode  86 = KP_Add XF86_Next_VMode
keycode  87 = KP_End KP_1
keycode  88 = KP_Down KP_2
keycode  89 = KP_Next KP_3
keycode  90 = KP_Insert KP_0
keycode  91 = KP_Delete KP_Decimal
keycode  92 = ISO_Level3_Shift
keycode  93 =
keycode  94 = less greater bar brokenbar bar brokenbar
keycode  95 = F11 XF86_Switch_VT_11
keycode  96 = F12 XF86_Switch_VT_12
keycode  97 =
keycode  98 =
keycode  99 =
keycode 100 =
keycode 101 =
keycode 102 =
keycode 103 =
keycode 104 = KP_Enter
keycode 105 = Control_R
keycode 106 = KP_Divide XF86_Ungrab
keycode 107 = Print Sys_Req
keycode 108 = ISO_Level3_Shift
keycode 109 =
keycode 110 = Home
keycode 111 = Up
keycode 112 = Prior
keycode 113 = Left
keycode 114 = Right
keycode 115 = End
keycode 116 = Down
keycode 117 = Next
keycode 118 = Insert
keycode 119 = Delete
keycode 120 =
keycode 121 =
keycode 122 =
keycode 123 =
keycode 124 =
keycode 125 = KP_Equal
keycode 126 =
keycode 127 = Pause Break
keycode 128 =
keycode 129 =
keycode 130 =
keycode 131 =
keycode 132 =
keycode 133 = Super_L
keycode 134 = Super_R
keycode 135 = Menu
keycode 136 =
keycode 137 =
keycode 138 =
keycode 139 =
keycode 140 =
keycode 141 =
keycode 142 =
keycode 143 =
keycode 144 =
keycode 145 =
keycode 146 =
keycode 147 =
keycode 148 =
keycode 149 =
keycode 150 =
keycode 151 =
keycode 152 =
keycode 153 =
keycode 154 =
keycode 155 =
keycode 156 =
keycode 157 =
keycode 158 =
keycode 159 =
keycode 160 =
keycode 161 =
keycode 162 =
keycode 163 =
keycode 164 =
keycode 165 =
keycode 166 =
keycode 167 =
keycode 168 =
keycode 169 =
keycode 170 =
keycode 171 =
keycode 172 =
keycode 173 =
keycode 174 =
keycode 175 =
keycode 176 =
keycode 177 =
keycode 178 =
keycode 179 =
keycode 180 =
keycode 181 =
keycode 182 =
keycode 183 =
keycode 184 =
keycode 185 =
keycode 186 =
keycode 187 =
keycode 188 =
keycode 189 =
keycode 190 =
keycode 191 =
keycode 192 =
keycode 193 =
keycode 194 =
keycode 195 =
keycode 196 =
keycode 197 =
keycode 198 =
keycode 199 =
keycode 200 =
keycode 201 =
keycode 202 =
keycode 203 = Mode_switch
keycode 204 = NoSymbol Alt_L
keycode 205 = NoSymbol Meta_L
keycode 206 = NoSymbol Super_L
keycode 207 = NoSymbol Hyper_L
keycode 208 =
keycode 209 =
keycode 210 =
keycode 211 =
keycode 212 =
keycode 213 =
keycode 214 =
keycode 215 =
keycode 216 =
keycode 217 =
keycode 218 =
keycode 219 = multiply division ISO_Next_Group ISO_Prev_Group ISO_Next_Group ISO_Prev_Group
keycode 220 = XF86Search
keycode 221 = XF86Meeting
keycode 222 =
keycode 223 =
keycode 224 =
keycode 225 =
keycode 226 =
keycode 227 =
keycode 228 =
keycode 229 =
keycode 230 =
keycode 231 =
keycode 232 =
keycode 233 =
keycode 234 =
keycode 235 = XF86Display
keycode 236 =
keycode 237 =
keycode 238 =
keycode 239 =
keycode 240 =
keycode 241 =
keycode 242 =
keycode 243 =
keycode 244 =
keycode 245 =
keycode 246 =
keycode 247 =
keycode 248 =
keycode 249 =
keycode 250 =
keycode 251 =
keycode 252 =
keycode 253 =
keycode 254 =
keycode 255 =

Now, all arrows keys can be used, but the Up one. Go into KDE Control Center. In the Regional & Accessibility/Input Action pane, look for the Preset Action/PrintScreen. In the General tab, click on the Disable check box.

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