MLR wrote:

> TQSettings::sync: failed to open '/etc/tqt3/tqt_plugins_3.5rc.tmp' for
> writing

Hi,
I am not using this package, but the message above most likely does not have
to do with your problem.

Have a look at that

~/arduino-1.8.7$ ./arduino
Picked up JAVA_TOOL_OPTIONS:

to me it looks like it is java app, so look in this direction - perhaps you
need to set tha java path or class path or similar.

regards