Kivy not app.run() working, but not rendering

[Guga Figueiredo]

For some reason I  can't get my Kivy projects to run on my computer.

I have posted this issue before, but I have edited the question on StackOverflow to better explain the situation.

In the hope that someone will shed some light on the matter, I'll post the full content of the question through here aswell.

I have been using Kivy for over a year now. But haven't done anything with it lately. I went back to play with it and to my surprise, and something wierd happend. Kivy seemed to be running, the app window would open, but nothing was beeing rendered. So I tried with some apps that were previously working (inaltered) and the same thing occurred. 

This is the code I tried running:

    from kivy.app import App
    from kivy.uix.button import Button
    from kivy.uix.screenmanager import Screen, ScreenManager


    class MyApp(App):


        def build(self):
            screen = Screen()
            screen.add_widget(Button(text='this is a button'))
            sm = ScreenManager()
            sm.add_widget(screen)
            return sm



    if __name__ == '__main__':
        MyApp().run()

This is what I get:

Meanwhile, this is what is going to the log:

    [INFO              ] [Logger      ] Record log in /home/<user>/.kivy/logs/kivy_16-06-03_15.txt
    [INFO              ] [Kivy        ] v1.9.1
    [INFO              ] [Python      ] v2.7.6 (default, Jun 22 2015, 17:58:13)
    [GCC 4.8.2]
    [INFO              ] [Factory     ] 179 symbols loaded
    [INFO              ] [Image       ] Providers: img_tex, img_dds, img_gif, img_sdl2, img_pil (img_ffpyplayer ignored)
    [INFO              ] [OSC         ] using <multiprocessing> for socket
    [INFO              ] [Window      ] Provider: sdl2(['window_egl_rpi'] ignored)
    [INFO              ] [GL          ] OpenGL version <3.0 Mesa 10.1.3>
    [INFO              ] [GL          ] OpenGL vendor <Intel Open Source Technology Center>
    [INFO              ] [GL          ] OpenGL renderer <Mesa DRI Intel(R) Broadwell >
    [INFO              ] [GL          ] OpenGL parsed version: 3, 0
    [INFO              ] [GL          ] Shading version <1.30>
    [INFO              ] [GL          ] Texture max size <8192>
    [INFO              ] [GL          ] Texture max units <32>
    [INFO              ] [Window      ] auto add sdl2 input provider
    [INFO              ] [Window      ] virtual keyboard not allowed, single mode, not docked
    [INFO              ] [AudioGstplayer] Using Gstreamer 1.2.4.0
    [INFO              ] [Audio       ] Providers: audio_gstplayer, audio_sdl2 (audio_ffpyplayer ignored)
    [INFO              ] [Text        ] Provider: sdl2
    [INFO              ] [Base        ] Start application main loop
    [INFO              ] [GL          ] NPOT texture support is available

So no error messages of any kind.

I am running on a ubuntu 14.04 (3.16.0-73-generic #95~14.04.1-Ubuntu, kernel upgrade for touchscreen support) machine.

I also tried running the "Hello World!" example at KivyBasics

What I have done thus far:

Did a clean install of Ubuntu and Kivy (installed 3.16.0-73-generic #95~14.04.1-Ubuntu for touchscreen support) to try and correct environment issues. Problem persists.

I went back to my older machine and ran the codes. Everything is working fine. Same setup.

Installed Kivy to another Ubuntu14.04 machine and everything works as expected. 

I have read somewhere graphic drivers may be at fault. But I am given no option for driver update or alternative by the update manager.

I tried manually installing dependencies to exclude this problem. but o no avail.

Here are my specs:

    -Computer-
    Processor : 4x Intel(R) Core(TM) M-5Y10c CPU @ 0.80GHz
    Memory : 3961MB (2250MB used)
    Operating System : Ubuntu 14.04.1 LTS
    User Name : guga (Guga Figueiredo)
    Date/Time : Qui 16 Jun 2016 21:51:07 BRT


    -Display-
    Resolution : 1366x768 pixels
    OpenGL Renderer : Mesa DRI Intel(R) Broadwell
    X11 Vendor : The X.Org Foundation


    -Multimedia-
    Audio Adapter : HDA-Intel - HDA Intel HDMI
    Audio Adapter : HDA-Intel - HDA Intel PCH


    -Input Devices-
     Lid Switch
     Power Button
     Power Button
     AT Translated Set 2 keyboard
     SynPS/2 Synaptics TouchPad
     HP Wireless hotkeys
     ELAN0732:00 04F3:0358
     HP Truevision HD
     HP WMI hotkeys
     ST LIS3LV02DL Accelerometer
     Video Bus
     HDA Intel HDMI HDMI/DP,pcm : 3=
     HDA Intel PCH Mic
     HDA Intel PCH Headphone


    -Printers-
    No printers found


    -SCSI Disks-
    ATA ST500LT012-1DG14

If anyone can shed some light on the matter, it'll be appreciated

[Guga Figueiredo]

Can someone please check this out. I really need to get this working and nothing has worked so far.