Demo , SDL initiate ptoblem

[Mhamad Hmad]

Hi ,
i am trying to run the Demo on my Debian PC.
i am using the release 14.8 ,I prepare the build directory for the Linux
base platform.
then, when i try to run it i got

 Invalid MIT-MAGIC-COOKIE-1 keyInvalid MIT-MAGIC-COOKIE-1 keycommandline
read: [Genode] init -> fb_sdl

   ~~~~~~~~~~~~~~~~~~~~~~~~~~| DirectFB 1.2.10 |~~~~~~~~~~~~~~~~~~~~~~~~~~
        (c) 2001-2008  The world wide DirectFB Open Source Community
        (c) 2000-2004  Convergence (integrated media) GmbH
      ----------------------------------------------------------------

(*) DirectFB/Core: Single Application Core. (2012-05-20 12:49)
(*) Direct/Memcpy: Using Generic 64bit memcpy()
(!) Direct/Util: opening '/dev/fb0' and '/dev/fb/0' failed
    --> No such file or directory
(!) DirectFB/FBDev: Error opening framebuffer device!
(!) DirectFB/FBDev: Use 'fbdev' option or set FRAMEBUFFER environment
variable.
(!) DirectFB/Core: Could not initialize 'system_core' core!
    --> Initialization error!
Quota exceeded! amount=24576, size=4096, consumed=24576
[init] upgrading quota donation for Env::CPU (8192 bytes)
Quota exceeded! amount=32768, size=4096, consumed=32768
[init] upgrading quota donation for Env::CPU (8192 bytes)
[init -> fb_sdl] SDL_Init failed
[init] virtual void Genode::Child_policy::exit(int): child exited with exit
value 0
[init -> launchpad] Could not open file "ld.lib.so"

any advice ?
 thank in advance.

best.
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