Re: [kivy-users] Kivy on ASUS TinkerBoard

[Pieter van der Meer]

You sir, are my HERO!

On Fri, Jun 15, 2018 at 3:59 AM, <laouich...@gmail.com> wrote:

Documenting since it took me longer than I'd like to admit.

To get Kivy to run on the Asus TinkerBoard (and I assume this apply to other SBC)

1) Recompile SDL2 with KMS/DRM support

Follow instructions for "Linux" on https://wiki.libsdl.org/Installation#Linux.2FUnix

./configure --disable-video-rpi --disable-video-opengl --enable-video-opengles2 --disable-video-mir --enable-video-kmsdrm && make && make install

2) Launch Kivy app with KIVY_GL_BACKEND=sdl2 as an environment variable

3) Profit

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Pieter van der Meer
System engineer / Owner
Tasty Chips Electronics
www.tastychips.nl

[Pieter van der Meer]

tried it, but still the same rpi_backend is it necessary to deinstall the default sdl package first?

[INFO   ] [Kivy        ] v1.9.1

[INFO   ] [Python      ] v3.5.3 (default, Jan 19 2017, 14:11:04) 

[GCC 6.3.0 20170118]

[INFO   ] [Factory     ] 179 symbols loaded

[INFO   ] [Image       ] Providers: img_tex, img_dds, img_gif, img_sdl2 (img_pil, img_ffpyplayer ignored)

[INFO   ] [Text        ] Provider: sdl2

[INFO   ] [OSC         ] using <multiprocessing> for socket

[INFO   ] [Window      ] Provider: sdl2(['window_egl_rpi'] ignored)

[CRITICAL] [Window      ] Unable to find any valuable Window provider at all!

egl_rpi - ImportError: cannot import name 'bcm'

  File "/usr/lib/python3/dist-packages/kivy/core/__init__.py", line 59, in core_select_lib

    fromlist=[modulename], level=0)

  File "/usr/lib/python3/dist-packages/kivy/core/window/window_egl_rpi.py", line 12, in <module>

    from kivy.lib.vidcore_lite import bcm, egl

sdl2 - RuntimeError: b'No available video device'

  File "/usr/lib/python3/dist-packages/kivy/core/__init__.py", line 67, in core_select_lib

    cls = cls()

  File "/usr/lib/python3/dist-packages/kivy/core/window/window_sdl2.py", line 138, in __init__

    super(WindowSDL, self).__init__()

  File "/usr/lib/python3/dist-packages/kivy/core/window/__init__.py", line 722, in __init__

    self.create_window()

  File "/usr/lib/python3/dist-packages/kivy/core/window/window_sdl2.py", line 237, in create_window

    self.fullscreen, resizable, state)

  File "kivy/core/window/_window_sdl2.pyx", line 80, in kivy.core.window._window_sdl2._WindowSDL2Storage.setup_window (kivy/core/window/_window_sdl2.c:1893)

  File "kivy/core/window/_window_sdl2.pyx", line 55, in kivy.core.window._window_sdl2._WindowSDL2Storage.die (kivy/core/window/_window_sdl2.c:1479)

[Pieter van der Meer]

apt-get purged the sdl2 package .. then reinstalled kivy and the sdl-ttf, sdl-image, sdl-mixer packages manually with dpkg. no change. very odd.

is it necessary to install all sdl packages manually? 

[Pieter van der Meer]

ok, eventually i just 

apt-get install python3-kivy

using the latest debian apt sources location and that seems to have done the trick.. 

[Pieter van der Meer]

ok.. after much pain i got your special compiled sdl2 working (without tinkeros' terrible software X windows driver, but on direct frame buffer / console)

the trick:

sudo apt purge python3-kivy

apt download libsdl2-ttf-2.0-0 libsdl2-image-2.0-0 libsdl2-mixer-2.0-0 python3-kivy-bin python3-kivy-common kivy-examples

sudo dpkg --force-all -i *.deb

that basically allows me to use the custom SDL2 shared lib with all the side libs from debian.. 

thanks! :)