Curious errors executing my .cshrc which contains an xmodmap command

[MickM]

I have a .cshrc file that contains this line:

xmodmap ~/.Xmodmap

When I connect via NX the terminal window that pops up shows an error and the xmodmap command didn’t work:

X Error of failed request:  BadValue (integer parameter out of range for operation)

Major opcode of failed request:  118 (X_SetModifierMapping)

Value in failed request:  0x17

Serial number of failed request:  22

Current serial number in output stream:  22

 

If I now manually enter the xmodmap command into the terminal window it works just fine without error. Similarly, if I remove the xmodmap line from the .cshrc then when I connect via NX the terminal window shows no errors, and when I then type in the xmodmap command it works just fine without errors and all of the keyboard remappings it defines also work just fine.

I don’t know what’s going on here – any ideas?

Other useful information:

I’m running Mac OS X 10.12.6 and NoMachine version 6.3.6 running a custom session in floating window mode

My xmodmap file contents is:

! This is my ~/.Xmodmap file for the Apple BlueTooth extended keyboard

! It brings several unresponsive numeric pad keys to life

! You can try any line interactively e.g.:

! xmodmap -e “keycode 114 = F16”

! You can execute this file by typing:

! xmodmap ~/.Xmodmap

! xmodmap is case sensitive so enter keysyms correctly!

! I use these key names for Cadence hotkeys in .cdsinit

! Use xev to determine a key’s keycode

 

!***********************************************************

! Enable the missing numeric pad keys

!***********************************************************

! keycode # = Keysym

keycode 114 = F16

keycode 72 = F17

keycode 87 = F18

keycode 88 = F19

! This is the “clear” key on the numeric pad

keycode 79 = KP_Separator

 

!***********************************************************

! Swap Control and Command modifiers

! Possible issues because the X11 menubar contains ⌘C, ⌘W etc.

!***********************************************************

! via https://www.emacswiki.org/emacs/MetaKeyProblems

! To determine your current modifier keys – enter the command “xmodmap”

! This is what resulted when I did that:

! shift       Shift_L (0x40),  Shift_R (0x44)

! lock        Caps_Lock (0x41)

! control     Control_L (0x43),  Control_R (0x46)

! mod1        Alt_L (0x42),  Alt_R (0x45)

! mod2        Meta_L (0x3f),  Meta_R (0x47)

! mod3

! mod4

! mod5

 

! So the Option keys are mod1, and the Command keys are mod2

! undo any mod2 (i.e. COMMAND) keys already set

clear mod2

! undo any control keys already set

clear control

! Set the COMMAND keys (keycodes 63 & 71) to function as *control* keys

keycode 63=Control_L

keycode 71=Control_R

! Set the CONTROL keys (keycodes 67 & 70) to function as *command* keys

keycode 67=Meta_L

keycode 70=Meta_R

! Define Meta_L & Meta_R to function as the mod2 modifier

add mod2 = Meta_L Meta_R

! Define Control_L & Control_R to function as the Control modifier

add control = Control_L Control_R

 

 

! Apple Extended BlueTooth keyboard

! 65=Caps_Lock, 56=Tab

! The “fn” and Eject keys do nothing at all in xev

 

!_______________________________________  ________________________________________

!   control  !   option   !   command  !  !   command  !   option   !   control  !

!  Control_L !    Alt_L   !    Meta_L  !  !    Meta_R  !    Alt_R   !  Control_R !

! keycode 67 ! keycode 66 ! keycode 63 !  ! keycode 71 ! keycode 69 ! keycode 70 !

!____________!____________!____________!  !____________!____________!____________!

 

!_____________________________________________

!      F13     !      F14     !      F15     !

!      F13     !      F14     !      F15     !

!  keycode 113 !  keycode 115 !  keycode 121 !

!______________!______________!______________!

!      fn      !     home     !   page up    !

!      nil     !     Home     !    Prior     !

!      nil     !  keycode 123 !  keycode 124 !

!______________!______________!______________!

!    delete    !      end     !   page down  !

!    Delete    !      End     !     Next     !

!  keycode 125 !  keycode 127 !  keycode 129 !

!______________!______________!______________!

!              ________________

!              !      up      !

!              !      UP      !

!              !  keycode 134 !

!______________!______________!_______________

!     left     !     down     !    right     !

!     Left     !     Down     !    Right     !

!  keycode 131 !  keycode 133 !  keycode 132 !

!______________!______________!______________!

 

!____________________________________________________________

!      F16     !      F17     !      F18     !      F19     !

!      F16     !      F17     !      F18     !      F19     !

!  keycode 114 !  keycode 72  !  keycode 87  !  keycode 88  !

!______________!______________!______________!______________!

!    clear     !       =      !       /      !       *      !

! KP_Separator !   KP_Equal   !  KP_Divide   ! KP_Multiply  !

!  keycode 79  !  keycode 89  !  keycode 83  !  keycode 75  !

!______________!______________!______________!______________!

!       7      !       8      !       9      !       –      !

!     KP_7     !     KP_8     !     KP_9     !  KP_Subtract !

!  keycode 97  !  keycode 99  !  keycode 100 !  keycode 86  !

!______________!______________!______________!______________!

!       4      !       5      !       6      !       +      !

!     KP_4     !     KP_5     !     KP_6     !    KP_Add    !

!  keycode 94  !  keycode 95  !  keycode 96  !  keycode 77  !

!______________!______________!______________!______________!

!       1      !       2      !       3      !              !

!     KP_1     !     KP_2     !     KP_3     !              !

!  keycode 91  !  keycode 92  !  keycode 93  !     Enter    !

!______________!______________!______________!   KP_Enter   !

!              0              !       .      !  keycode 84  !

!            KP_0             !  KP_Decimal  !              !

!         keycode 90          !  keycode 73  !              !

!_____________________________!______________!______________!

 

[graywolf]

Hello.

Likely the xmodmap command is launched before the keybord setup is completed in the remote session. Some key is already defined as modifier (e.g. Meta_L could be in use as Mod1) so the “add” expression fails.

You could take in account and change the script accordingly, but I think it’d be better if .cshrc is modified to avoid launching xmodmap in the case of remote NoMachine session, i.e.

if ( ! $?NX_SESSION_ID ) xmodmap ~/.Xmodmap

In the remote NoMachine session you can instruct NoMachine to run a custom script: use UserScriptAfterSessionStart and UserScriptAfterSessionReconnect in node.cfg.

Here you find some examples to create a custom script: Some examples to use custom scripts triggered on server and node events

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