RTL8188CUS Wireless dongle perpetually connecting but never connected

Question

I use Fullcalendar 5.1 and I would like try to delete an event on fullcalendar by clicking event. I load data from database tables and I get an array for events and resources (like examples in comment code). I need "event id" in order to delete in database tables and I don't know how to do ("eventDelete" is undefined). Thank for your help if you have already do the same.

Here is my full code :

document.addEventListener('DOMContentLoaded', function() {
      var calendarEl = document.getElementById('calendar');
      var calendar = new FullCalendar.Calendar(calendarEl,
      {
        aspectRatio: 1.8,
        scrollTime: '00:00',
        locale : 'fr',
        headerToolbar: {
          left: 'today prev next',
          center: 'title',
          right: 'resourceTimelineDay,timeGridWeek,dayGridMonth'
        },
        firstDay : 1,
        buttonText: {
          today: 'Aujourd\'hui',
          month: 'Mois',
          week: 'Semaine',
          list: 'Liste'
        },
        initialView: 'resourceTimelineDay',
        resourceAreaWidth: '30%',
        resourceAreaColumns:[ {
            headerContent: 'Ressources',
            field: 'title'
          }
        ],
        resources:
        /*  resources: [
            { id: 'a', title: 'Auditorium A', occupancy: 40 },
            { id: 'b', title: 'Auditorium B', occupancy: 40, eventColor: 'green' },
            { id: 'c', title: 'Auditorium C', occupancy: 40, eventColor: 'orange' },
            { id: 'd', title: 'Auditorium D', occupancy: 40, children: [
              { id: 'd1', title: 'Room D1', occupancy: 10 },
              { id: 'd2', title: 'Room D2', occupancy: 10 }
            ] }
          ] */
        {
           url: '../api/calendar/resources.php',
           method: 'POST'
        },
        events:
        /* events:
        [
          { id: '1', resourceId: 'b', start: '2020-06-07T02:00:00', end: '2020-06-07T07:00:00', title: 'event 1' },
          { id: '2', resourceId: 'c', start: '2020-06-07T05:00:00', end: '2020-06-07T22:00:00', title: 'event 2' },
          { id: '3', resourceId: 'd', start: '2020-06-06', end: '2020-06-08', title: 'event 3' }
        ] */
        {
            url: '../api/calendar/event.php',
            method: 'POST'
         },
         editable: true,
         selectable: true,
         eventClick: function (info) {
            var deleteMsg = confirm("Voulez-vous vraiment supprimer cette activité ?");
            if (deleteMsg) {
              var eventDelete= $('#event_id').val() ;
              var event = calendar.getEventById(eventDelete);
              // Remove event from fullcalendar
              info.event.remove();
              // Call ajax to remove event in database table
                $.ajax({
                    type: "POST",
                    url: '../api/calendar/deleteEvent.php',
                    dataType: 'json',
                    encode: true,
                    data: {'id': eventDelete},
                    success: function (response) {
                        console.log(response);
                        if(parseInt(response) > 0) {
                            $('#calendar').fullCalendar('removeEvents', event.id);
                            displayMessage("Suprression effectuée");
                        }
                      }
                });
              }
            }
          });
          calendar.render();
        });

It remove event from Fullcalendar but not from database because of "event delete" undefined.

Solution

It looks like you have two Realtek adapters connected to USB.

Regarding 0bda:8176 Realtek Semiconductor Corp. RTL8188CUS 802.11n WLAN Adapter you can install a better driver. Run in terminal

   sudo apt-get install git build-essential
   git clone https://github.com/lwfinger/rtl8192cu.git
   cd rtl8192cu
   make
   sudo make install

It should solve the issue.

You will have to re-install this driver after each kernel upgrade.

I pushed DKMS module of this driver to my ppa. If you install it from there, you will not need to re-install it.

It can be installed by

sudo add-apt-repository ppa:hanipospilot/rtlwifi
sudo apt-get update
sudo apt-get install rtl8192cu-dkms

Important!!! If you previously installed this driver from https://github.com/lwfinger/rtl8192cu.git, you will need to run

sudo rm /etc/modprobe.d/50-rtl8192cu.conf

to get it work. Previous install blacklists rtl8192cu.

And if you installed rtlwifi-new-dkms, you should remove it too.

I will later remove rtl8192cu from rtlwifi-dkms, because it does not work well.

Comments

[Pilot6]

And rtl8171 is a wired Ethernet driver. it is unrelated.

[Jaybird]

It's coming, I just need to transfer it to a computer with Internet (can't access my phone)

[Jaybird]

Done - sorry for the delay and formatting, I got it going through my phone, but not the code style blocks.

[Pilot6]

It looks like you have two USB adapters connected. Is it the case?

[Jaybird]

No - just one, my other usb devices are phone, mouse, speakers and hard drive. I have on board wifi, but it's very weak.

[Pilot6]

And what is 0bda:8187 Realtek Semiconductor Corp. RTL8187 Wireless Adapter?

[Pilot6]

That must be your built-in adapter connected through usb. It is old 201.11g. You better disable it, not to confuse things.

[Pilot6]

I wrote an answer with two solutions. Online and offline. In your case offline with manual download of the driver is applicable.

[Sandra]

I get "event ID" with this code : "var event = info.event.id" but it doesn't run yet

[Jaybird]

Now when I connect to the WiFi, the whole computer freezes indefinitely, I tried restarting three or four times with the same result.

[Pilot6]

OK. I know how to fix it. First run sudo apt-get remove rtlwifi-new-dkms && sudo add-apt-repository -r ppa:hanipouspilot/rtlwifi

[Pilot6]

And then install another driver from the answer.