title: Unable to use Xdebug 3.0.2 with NetBeans 12.2, PHP 7.4, Ubuntu 20.04
body: <p>I think I've all tried but I just can't use Xdebug with NetBeans on Ubuntu 20.04, there's a message &quot;Waiting For Connection (netbeans-xdebug)&quot; displayed at the bottom of the IDE.</p>
  <p>If I use <code>phpinfo()</code>, I can see that Xdebug is enabled, here's my xdebug.ini configuration file :</p>
  <pre><code>zend_extension=xdebug.so
  
  xdebug.mode=debug
  xdebug.start_with_request=yes
  xdebug.discover_client_host=0
  xdebug.client_port=9000
  xdebug.client_host=127.0.0.1
  xdebug.remote_handler=dbgp
  </code></pre>
  <p>In NetBeans my settings in Options -&gt; PHP -&gt; Debugging are :</p>
  <pre><code>Debugger Port: 9000
  Session ID : netbeans-xdebug
  Maximum Data Length : 2048
  Stop at First Line : unchecked
  Watches and Balloon Evaluation : unchecked
  Show Requested URLs : checked
  Show Debugger Console : checked
  </code></pre>
  <p>I know that this question has been asked douzains of times but most of them are old and none of the answers are working.
  This drives me crazy so any help would be appreciated !</p>
  <p>-- Edit :</p>
  <p>Here is the content of the xdebug.log file :</p>
  <pre><code>[21406] Log opened at 2021-01-21 12:42:36.233357
  [21406] [Step Debug] INFO: Connecting to configured address/port: 127.0.0.1:9000.
  [21406] [Step Debug] WARN: Creating socket for '127.0.0.1:9000', poll success, but error: Operation now in progress (29).
  [21406] [Step Debug] ERR: Could not connect to debugging client. Tried: 127.0.0.1:9000 (through xdebug.client_host/xdebug.client_port) :-(
  [21406] Log closed at 2021-01-21 12:42:36.234607
  </code></pre>
  <p>And here is the outpout of xdebug_info() :</p>
  <pre><code>PHP
  Build Configuration
  Version 7.4.14
  Debug Build no
  Thread Safety   disabled
  Settings
  Configuration File (php.ini) Path   /etc/php/7.4/cli
  Loaded Configuration File   /etc/php/7.4/apache2/php.ini
  Scan this dir for additional .ini files /etc/php/7.4/apache2/conf.d
  Additional .ini files parsed    /etc/php/7.4/apache2/conf.d/10-mysqlnd.ini, /etc/php/7.4/apache2/conf.d/10-opcache.ini, /etc/php/7.4/apache2/conf.d/10-pdo.ini, /etc/php/7.4/apache2/conf.d/15-xml.ini, /etc/php/7.4/apache2/conf.d/20-calendar.ini, /etc/php/7.4/apache2/conf.d/20-ctype.ini, /etc/php/7.4/apache2/conf.d/20-curl.ini, /etc/php/7.4/apache2/conf.d/20-dom.ini, /etc/php/7.4/apache2/conf.d/20-exif.ini, /etc/php/7.4/apache2/conf.d/20-ffi.ini, /etc/php/7.4/apache2/conf.d/20-fileinfo.ini, /etc/php/7.4/apache2/conf.d/20-ftp.ini, /etc/php/7.4/apache2/conf.d/20-gd.ini, /etc/php/7.4/apache2/conf.d/20-gettext.ini, /etc/php/7.4/apache2/conf.d/20-iconv.ini, /etc/php/7.4/apache2/conf.d/20-json.ini, /etc/php/7.4/apache2/conf.d/20-mbstring.ini, /etc/php/7.4/apache2/conf.d/20-mysqli.ini, /etc/php/7.4/apache2/conf.d/20-pdo_mysql.ini, /etc/php/7.4/apache2/conf.d/20-phar.ini, /etc/php/7.4/apache2/conf.d/20-posix.ini, /etc/php/7.4/apache2/conf.d/20-readline.ini, /etc/php/7.4/apache2/conf.d/20-shmop.ini, /etc/php/7.4/apache2/conf.d/20-simplexml.ini, /etc/php/7.4/apache2/conf.d/20-sockets.ini, /etc/php/7.4/apache2/conf.d/20-sysvmsg.ini, /etc/php/7.4/apache2/conf.d/20-sysvsem.ini, /etc/php/7.4/apache2/conf.d/20-sysvshm.ini, /etc/php/7.4/apache2/conf.d/20-tokenizer.ini, /etc/php/7.4/apache2/conf.d/20-xdebug.ini, /etc/php/7.4/apache2/conf.d/20-xmlreader.ini, /etc/php/7.4/apache2/conf.d/20-xmlwriter.ini, /etc/php/7.4/apache2/conf.d/20-xsl.ini
  Directive   Local Value Master Value    Docs
  xdebug.mode debug   debug   
  xdebug.start_with_request   yes yes 
  xdebug.start_upon_error default default 
  xdebug.output_dir   /tmp    /tmp    
  xdebug.trigger_value    no value    no value    
  xdebug.file_link_format no value    no value    
  xdebug.filename_format  no value    no value    
  xdebug.log  /var/log/xdebug.log /var/log/xdebug.log 
  xdebug.log_level    7   7   
  xdebug.var_display_max_children 128 128 
  xdebug.var_display_max_data 512 512 
  xdebug.var_display_max_depth    3   3   
  xdebug.max_nesting_level    256 256 
  xdebug.cli_color    0   0   
  xdebug.force_display_errors Off Off 
  xdebug.force_error_reporting    0   0   
  xdebug.halt_level   0   0   
  xdebug.max_stack_frames -1  -1  
  xdebug.show_error_trace Off Off 
  xdebug.show_exception_trace Off Off 
  xdebug.show_local_vars  Off Off 
  xdebug.dump.COOKIE  no value    no value    
  xdebug.dump.ENV no value    no value    
  xdebug.dump.FILES   no value    no value    
  xdebug.dump.GET no value    no value    
  xdebug.dump.POST    no value    no value    
  xdebug.dump.REQUEST no value    no value    
  xdebug.dump.SERVER  no value    no value    
  xdebug.dump.SESSION no value    no value    
  xdebug.dump_globals On  On  
  xdebug.dump_once    On  On  
  xdebug.dump_undefined   Off Off 
  xdebug.profiler_output_name cachegrind.out.%p   cachegrind.out.%p   
  xdebug.profiler_append  Off Off 
  xdebug.cloud_id no value    no value    
  xdebug.client_host  127.0.0.1   127.0.0.1   
  xdebug.client_port  9000    9000    
  xdebug.discover_client_host Off Off 
  xdebug.client_discovery_header  no value    no value    
  xdebug.idekey   no value    no value    
  xdebug.connect_timeout_ms   200 200 
  xdebug.scream   Off Off 
  xdebug.gc_stats_output_name gcstats.%p  gcstats.%p  
  xdebug.trace_output_name    trace.%c    trace.%c    
  xdebug.trace_format 0   0   
  xdebug.trace_options    0   0   
  xdebug.collect_assignments  Off Off 
  xdebug.collect_return   Off Off 
  </code></pre>