DirectFB 설치 / 개발환경 설정 / 예제 실행 질문드립니다. 도와주세요!!

parkseonghee@ubuntu:/usr/local/bin$ ls
df_andi dfbmaster df_flip df_palette directfb-csource
dfbdump dfbpenmount df_fonts df_particle libpng12-config
dfbfx dfbscreen df_input df_porter libpng-config
dfbg df_cpuload df_joystick df_stress mkdfiff
dfbinfo df_databuffer df_knuckles df_texture mkdgiff
dfbinput df_dioload df_layer df_video pss
dfbinspector df_dok df_matrix df_video_particle spacedream
dfblayer df_drivertest df_neo df_window
df_bltload df_fire df_netload directfb-config
parkseonghee@ubuntu:/usr/local/bin$ ./df_dok

~~~~~~~~~~~~~~~~~~~~~~~~~~| DirectFB 1.2.9 |~~~~~~~~~~~~~~~~~~~~~~~~~~
(c) 2001-2008 The world wide DirectFB Open Source Community
(c) 2000-2004 Convergence (integrated media) GmbH
----------------------------------------------------------------

(*) DirectFB/Core: Single Application Core. (2013-01-27 05:17)
(!) Direct/Util: opening '/dev/fb0' failed
--> Permission denied
(!) 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!
df_dok.c <1457>:
(#) DirectFBError [DirectFBCreate( &dfb )]: Initialization error!
parkseonghee@ubuntu:/usr/local/bin$ sudo ./df_dok
[sudo] password for parkseonghee:

~~~~~~~~~~~~~~~~~~~~~~~~~~| DirectFB 1.2.9 |~~~~~~~~~~~~~~~~~~~~~~~~~~
(c) 2001-2008 The world wide DirectFB Open Source Community
(c) 2000-2004 Convergence (integrated media) GmbH
----------------------------------------------------------------

(*) DirectFB/Core: Single Application Core. (2013-01-27 05:17)
(*) Direct/Thread: Started 'VT Switcher' (-1) [CRITICAL OTHER/OTHER 0/0] <8388608>...
(*) Direct/Thread: Started 'Keyboard Input' (-1) [INPUT OTHER/OTHER 0/0] <8388608>...
(*) DirectFB/Input: Keyboard 0.9 (directfb.org)
(*) Direct/Thread: Started 'PS/2 Input' (-1) [INPUT OTHER/OTHER 0/0] <8388608>...
(*) DirectFB/Input: IMPS/2 Mouse (1) 1.0 (directfb.org)
(*) Direct/Thread: Started 'PS/2 Input' (-1) [INPUT OTHER/OTHER 0/0] <8388608>...
(*) DirectFB/Input: IMPS/2 Mouse (2) 1.0 (directfb.org)
(*) Direct/Thread: Started 'Linux Input' (-1) [INPUT OTHER/OTHER 0/0] <8388608>...
(*) DirectFB/Input: Power Button (1) 0.1 (directfb.org)
(*) Direct/Thread: Started 'Linux Input' (-1) [INPUT OTHER/OTHER 0/0] <8388608>...
(*) DirectFB/Input: Sleep Button (2) 0.1 (directfb.org)
(*) Direct/Thread: Started 'Linux Input' (-1) [INPUT OTHER/OTHER 0/0] <8388608>...
(*) DirectFB/Input: AT Translated Set 2 keyboard (3) 0.1 (directfb.org)
(*) Direct/Thread: Started 'Linux Input' (-1) [INPUT OTHER/OTHER 0/0] <8388608>...
(*) DirectFB/Input: ImExPS/2 Generic Explorer Mouse (4) 0.1 (directfb.org)
(*) DirectFB/Genefx: MMX detected and enabled
(*) DirectFB/Graphics: MMX Software Rasterizer 0.6 (directfb.org)
(*) DirectFB/Core/WM: Default 0.3 (directfb.org)
(*) FBDev/Mode: Setting 800x600 RGB32
(*) FBDev/Mode: Switched to 800x600 (virtual 800x600) at 32 bit (RGB32), pitch 3200
(*) FBDev/Surface: Allocated 800x600 32 bit RGB32 buffer (index 0) at offset 0 and pitch 3200.
df_dok.c <1502>:
(#) DirectFBError [dfb->CreateImageProvider( dfb, DATADIR"/biglogo.png", &provider )]: No (suitable) implementation found!
(!!!) *** WARNING [Application exited without deinitialization of DirectFB!] *** [core.c:859 in dfb_core_deinit_check()]
(!!!) *** WARNING [still objects in 'Layer Region Pool'] *** [object.c:241 in fusion_object_pool_destroy()]
(!!!) *** WARNING [still objects in 'Layer Context Pool'] *** [object.c:241 in fusion_object_pool_destroy()]
(!!!) *** WARNING [still objects in 'Surface Pool'] *** [object.c:241 in fusion_object_pool_destroy()]

참고링크 : http://blog.naver.com/PostView.nhn?blogId=y851004&logNo=20063548168&widgetTypeCall=true
http://blog.naver.com/PostView.nhn?blogId=antoniobald&logNo=50143834430

여기 두곳을 참고해서 directfb를 사용하려고 하는데요,, 위와 같은 오류가 뜹니다. 원인을 몰라서 해매고있네요..
도와주시면 감사하겠습니다.

또 참고링크에서 오류가 나서 건너뛴부분도 있어요.. 여기저기 설치방법들이 달라서 어느게 정통한건지 모르겠습니다.
도움주시면 감사하겠습니다.