Hi folks,
I configured Qt embedded for my target which is a x86 machine running busybox with the following settings:
(the version of Qt is 4.6.3)
Qt Code: 
  1. ./configure -xplatform qws/linux-x86-g++ -embedded x86 \
  2.              -prefix /usr/local/Trolltech/Qt-target-version \
  3.              -qt-gfx-linuxfb -qt-gfx-vnc \
  4.              -no-largefile -exceptions -no-accessibility -no-qt3support -no-sse2 -qt-zlib -no-gif -no-libtiff \
  5.              -qt-libpng -no-libmng -qt-libjpeg -openssl -no-nis -no-cups -depths 16 \
  6.              -qt-mouse-linuxinput -confirm-license
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I've used the following kernel modules to create /dev/fb0 :
Qt Code: 
  1. fbcon                  
  2. vga16fb
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running the framebuffer example located in examples/qws/framebuffer would result the following output :
Qt Code: 
  1. The framebuffer device was opened successfully.
  2.  
  3. Fixed screen info:
  4. 	id:          VGA16 VGA
  5. 	smem_start:  0xa0000
  6. 	smem_len:    65536
  7. 	type:        4
  8. 	type_aux:    0
  9. 	visual:      3
  10. 	xpanstep:    8
  11. 	ypanstep:    1
  12. 	ywrapstep:   0
  13. 	line_length: 80
  14. 	mmio_start:  0x0
  15. 	mmio_len:    0
  16. 	accel:       0
  17.  
  18. The framebuffer device was mapped to memory successfully.
  19.  
  20. Was in graphics mode already. Skipping
  21. Variable screen info:
  22. 	xres:           640
  23. 	yres:           480
  24. 	xres_virtual:   640
  25. 	yres_virtual:   480
  26. 	yoffset:        0
  27. 	xoffset:        0
  28. 	bits_per_pixel: 4
  29. 	grayscale: 0
  30. 	red:    offset:  0, length:  6, msb_right:  0
  31. 	green:  offset:  0, length:  6, msb_right:  0
  32. 	blue:   offset:  0, length:  6, msb_right:  0
  33. 	transp: offset:  0, length:  0, msb_right:  0
  34. 	nonstd:       0
  35. 	activate:     0
  36. 	height:       -1
  37. 	width:        -1
  38. 	accel_flags:  0x0
  39. 	pixclock:     39721
  40. 	left_margin:  48
  41. 	right_margin: 16
  42. 	upper_margin: 33
  43. 	lower_margin: 10
  44. 	hsync_len:    96
  45. 	vsync_len:    2
  46. 	sync:         0
  47. 	vmode:        0
  48.  
  49. Frame Buffer Performance test...
  50.         Average:   1319 usecs
  51.         Bandwidth: 47.384 MByte/Sec
  52.         Max. FPS:  758.150 fps
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after running framebuffer file, the screen goes green for a moment but three squares are not shown(as it is mentioned here).

and finally when I try to run one of the demos on the target machine using the following command:
Qt Code: 
  1. ./anomaly -qws
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I get the following error:
VGA16 video mode not supported
I've been googling this for hours! what I'm doing wrong? why can't I run the application on my target machine?