Re: [Plib-devel] Joystick problem

[Steve B. <sjb...@ai...>]

Risto S Varanka wrote:
> 
> Thanks for help, Stephen! My joystick works just nice in the JS example
> as well now, and I'm one happy hacker. (If only I got my OpenGL
> working too ;)
> 
> I'm sorry to disappoint you, but it was a simple permission
> problem.  I had overlooked the obvious :) Btw, do people often
> have problems with the joystick support? Maybe the example could
> have more diagnostic features, like in my case it could have said:
> "No permissions to use joystick /dev/js0.  The permissions on file
> /dev/js0 are "rw-rw----" - is this correct?"

No.

rw-rw---- only grants permission to the 'owner' of /dev/js0 - who
is presumably 'root' - and to members of the 'group' that /dev/js0
belongs to - which is presumably also 'root'.  Other users who
are not 'root' or members of the 'root' group will be denied
permission to read or write it.

You need crw-rw-rw-.  Log in as 'root' (or run 'su') and type:

  chown root /dev/js{0,1}
  chgrm root /dev/js{0,1}
  chmod a+rw /dev/js{0,1}

...just to be sure.  On my machine:

  > ls -l /dev/js*
  crw-rw-rw-   1 root     root      15,   0 Mar 11 04:11 /dev/js0
  crw-rw-rw-   1 root     root      15,   1 Mar 11 04:11 /dev/js1

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