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SDL_Error: No available video device on BeagleBone Black wit
JetForMe


Joined: 19 Jun 2014
Posts: 28
Post Posted: Thu Jun 19, 2014 9:54 am
Hi. I've got a recent BeagleBone Black with a 4D Systems 4.3" cape attached (http://www.4dsystems.com.au/product/4DCAPE_43/). Debian comes up nicely on it, displaying a desktop on the display.

I logged in from a separate machine, created a very simple SDL program after building and installing SDL2, and when I execute it, I get SDL_Error: No available video device. I tried running it from a terminal program via the desktop, but it didn't change things (it did actually also report "no protocol specified" a couple of times).

I'd like to completely take over the screen so my app can display some information. I'd like to be able to launch this app at startup, or via ssh connection, rather than having to interact with console. Perhaps later, it would be nice to respond to touch events.

I'm sure there's some display configuration or contention issue, but I don't know what it is, and so far my googling has turned up nothing.

Any and all help would be much appreciated. Thank you.


--
Rick



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SDL_Error: No available video device on BeagleBone Black wit
gabomdq


Joined: 28 Jul 2011
Posts: 495
Location: Argentina
Post Posted: Thu Jun 19, 2014 12:58 pm
2014-06-19 6:54 GMT-03:00 Rick Mann:
Quote:
Hi. I've got a recent BeagleBone Black with a 4D Systems 4.3" cape attached (http://www.4dsystems.com.au/product/4DCAPE_43/). Debian comes up nicely on it, displaying a desktop on the display.

I logged in from a separate machine, created a very simple SDL program after building and installing SDL2, and when I execute it, I get SDL_Error: No available video device. I tried running it from a terminal program via the desktop, but it didn't change things (it did actually also report "no protocol specified" a couple of times).

I'd like to completely take over the screen so my app can display some information. I'd like to be able to launch this app at startup, or via ssh connection, rather than having to interact with console. Perhaps later, it would be nice to respond to touch events.

I'm sure there's some display configuration or contention issue, but I don't know what it is, and so far my googling has turned up nothing.

Any and all help would be much appreciated. Thank you.


SDL2 does not have support for the BeagleBone black. I looked into it some time ago and it seems they have some legal/technical problems with their OpenGL ES2 support/drivers, so adding support to SDL2 was not possible at the time.
If that situation changed I'd be interested in adding support. 


By the way, if you can run X11 or Wayland with OpenGL ES2 enabled, SDL should just pick that up and run (if it was properly configured and compiled!).


 

--
Gabriel.
SDL_Error: No available video device on BeagleBone Black wit
JetForMe


Joined: 19 Jun 2014
Posts: 28
Post Posted: Thu Jun 19, 2014 7:12 pm
Thank you, Gabriel. I'm told by the #beagle IRC channel that neither Wayland nor X work on the BeagleBone Black yet. But fbdev does. Is it possible to use that with SDL? The channel tells me that SDL2 doesn't work with the raw frame buffer, but I guess SDL1.2 does?


On Jun 19, 2014, at 05:58 , Gabriel Jacobo wrote:

Quote:



2014-06-19 6:54 GMT-03:00 Rick Mann:
Hi. I've got a recent BeagleBone Black with a 4D Systems 4.3" cape attached (http://www.4dsystems.com.au/product/4DCAPE_43/). Debian comes up nicely on it, displaying a desktop on the display.

I logged in from a separate machine, created a very simple SDL program after building and installing SDL2, and when I execute it, I get SDL_Error: No available video device. I tried running it from a terminal program via the desktop, but it didn't change things (it did actually also report "no protocol specified" a couple of times).

I'd like to completely take over the screen so my app can display some information. I'd like to be able to launch this app at startup, or via ssh connection, rather than having to interact with console. Perhaps later, it would be nice to respond to touch events.

I'm sure there's some display configuration or contention issue, but I don't know what it is, and so far my googling has turned up nothing.

Any and all help would be much appreciated. Thank you.



SDL2 does not have support for the BeagleBone black. I looked into it some time ago and it seems they have some legal/technical problems with their OpenGL ES2 support/drivers, so adding support to SDL2 was not possible at the time.
If that situation changed I'd be interested in adding support.

By the way, if you can run X11 or Wayland with OpenGL ES2 enabled, SDL should just pick that up and run (if it was properly configured and compiled!).


--
Gabriel.
_______________________________________________
SDL mailing list

http://lists.libsdl.org/listinfo.cgi/sdl-libsdl.org


--
Rick



_______________________________________________
SDL mailing list

http://lists.libsdl.org/listinfo.cgi/sdl-libsdl.org
SDL_Error: No available video device on BeagleBone Black wit
gabomdq


Joined: 28 Jul 2011
Posts: 495
Location: Argentina
Post Posted: Thu Jun 19, 2014 7:22 pm
Yes, SDL2 does not have a fbdev backend, 1.2 does have it AFAIK.

2014-06-19 16:12 GMT-03:00 Rick Mann:
Quote:
Thank you, Gabriel. I'm told by the #beagle IRC channel that neither Wayland nor X work on the BeagleBone Black yet. But fbdev does. Is it possible to use that with SDL? The channel tells me that SDL2 doesn't work with the raw frame buffer, but I guess SDL1.2 does?


On Jun 19, 2014, at 05:58 , Gabriel Jacobo wrote:

Quote:



2014-06-19 6:54 GMT-03:00 Rick Mann:
Hi. I've got a recent BeagleBone Black with a 4D Systems 4.3" cape attached (http://www.4dsystems.com.au/product/4DCAPE_43/). Debian comes up nicely on it, displaying a desktop on the display.

I logged in from a separate machine, created a very simple SDL program after building and installing SDL2, and when I execute it, I get SDL_Error: No available video device. I tried running it from a terminal program via the desktop, but it didn't change things (it did actually also report "no protocol specified" a couple of times).

I'd like to completely take over the screen so my app can display some information. I'd like to be able to launch this app at startup, or via ssh connection, rather than having to interact with console. Perhaps later, it would be nice to respond to touch events.

I'm sure there's some display configuration or contention issue, but I don't know what it is, and so far my googling has turned up nothing.

Any and all help would be much appreciated. Thank you.



SDL2 does not have support for the BeagleBone black. I looked into it some time ago and it seems they have some legal/technical problems with their OpenGL ES2 support/drivers, so adding support to SDL2 was not possible at the time.
If that situation changed I'd be interested in adding support.

By the way, if you can run X11 or Wayland with OpenGL ES2 enabled, SDL should just pick that up and run (if it was properly configured and compiled!).


--
Gabriel.
_______________________________________________
SDL mailing list

http://lists.libsdl.org/listinfo.cgi/sdl-libsdl.org


--
Rick



_______________________________________________
SDL mailing list

http://lists.libsdl.org/listinfo.cgi/sdl-libsdl.org




--
Gabriel.