[erlang-questions] Appmon not starting under ubuntu linux

Kenneth Lundin <>
Sat Sep 27 22:21:54 CEST 2008


Appmon is written using the Gs application which is an interface
towards TCL/TK. You need TCL/TK in order to get
Gs working. I suspect that this is the missing thing. Either you don't
have TCL/TK, it is of wrong version or GS can't find it
in the path.

try doing gs:start() in the shell. I suppose this will fail if there
is something missing for Gs (like TCL/TK).

/Kenneth Erlang/OTP Ericsson

2008/9/27 Edwin Fine <>:
> Dan,
>
> appmon uses graphics, which need X. In Windows, graphics are built in so you
> need nothing special. I assume you are not logged in as superuser.
>
> Try the following:
>
> $ xterm
>
> If you see an xterm, your appmon should have worked. If you get an error
> message, there are two things I can think of off the top of my head that
> might not be set up correctly.
>
> Is your DISPLAY variable set correctly? I am assuming that this is a local
> Linux box and that you are not using ssh or telnet to a remote box. If you
> are, that's another story.
>
> Try setting DISPLAY as follows:
>
> $ export DISPLAY=:0.0
>
> Then try the xterm again. If it STILL doesn't work, there may be X authority
> problems. Try this:
>
> $ xhost +
>
> Warning: this is a security risk, allowing any X system access to your box.
> But we'll only be doing this for a moment and I assume you are behind a
> firewall.
>
> Now try xterm again. If it works, appmon should work too.
>
> To make this work without having to open up using xhost +, Google xauth and
> Xauthority and ensure you have a ~/.Xauthority file set up correctly.
>
> Hope this helps. If you are still stuck, please post what happened above
> with xterm when you try it.
>
> On Sat, Sep 27, 2008 at 6:18 AM, Dan Rubino <>
> wrote:
>>
>> Hi all,
>>
>> I normally develop my Erlang apps under windows but this weekend am
>> having a go under Linux.
>>
>> My apps compile and start fine however when I try and run appmon i.e.
>> appmon:start().
>>
>> The console just hangs and doesnt open the appmon interface.
>>
>> I am running 5.5.5 - anyone come across this before?
>>
>> Thanks,
>> Dan
>>
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