[Qt-interest] problem with the framebuffer on an ARM device

[ilpaso at inwind.it]

Hi all,
I installed Qt Embedded on a ARM device.
There is a problem with the framebuffer.
Running a simple application (./application -qws) it returns:


	Cannot create semaphore /tmp/qtembedded-0/QtEmbedded-0 'd'
	Error 38 Function not implemented
	Cannot get display lock
	Aborted


but when I try to run the framebuffer example application it returns

	The framebuffer device was opened successfully.

	Fixed screen info:
	id: imapfb
	smem_start: 0x44800000
	smem_len: 4718592
	type: 0
	type_aux: 0
	visual: 2
	xpanstep: 0
	ypanstep: 1
	ywrapstep: 0
	line_length: 2048
	mmio_start: 0x20cd0000
	mmio_len: 16384
	accel: 0

	The framebuffer device was mapped to memory successfully.

	Successfully switched to graphics mode.

	Variable screen info:
	xres: 1024
	yres: 576
	xres_virtual: 1024
	yres_virtual: 1152
	yoffset: 0
	xoffset: 0
	bits_per_pixel: 16
	grayscale: 0
	red: offset: 11, length: 5, msb_right: 0
	green: offset: 5, length: 6, msb_right: 0
	blue: offset: 0, length: 5, msb_right: 0
	transp: offset: 0, length: 0, msb_right: 0
	nonstd: 0
	activate: 0
	height: 0
	width: 0
	accel_flags: 0x0
	pixclock: 46213560
	left_margin: 128
	right_margin: 15
	upper_margin: 21
	lower_margin: 5
	hsync_len: 104
	vsync_len: 4
	sync: 0
	vmode: 0

	Frame Buffer Performance test...
	Average: 39244 usecs
	Bandwidth: 114.667 MByte/Sec
	Max. FPS: 25.482 fps

	Will draw 3 rectangles on the screen,
	they should be colored red, green and blue (in that order).
	Done.

How can I solve?
I changed the permission to the file /tmp/qtembedded-0/QtEmbedded-0 but it returns a "wrong permissions" error

Thank you in advance

ilpaso