omapdss DISPC error: timeout waiting GO flag

Hello,

I've the following behaviour: I boot angstrom with X disabled, I see
the beagle splashscreen of u-boot, then the angstrom splashscreen.
At this point I have the console on serial and I want to try omapfbplay.
If I try it what I got is:

omapdss DISPC error: timeout waiting GO flag

and then black screen with "mode not supported"

Kernel Linux beagleboard 2.6.29-rc7-omap1-05479-g30aa645-dirty #9 Sun
Mar 8 21:45:32 CET 2009 armv7l unknown unknown GNU/Linux

CONFIG_OMAP2_DSS=y
CONFIG_OMAP2_DSS_VRAM_SIZE=10
CONFIG_OMAP2_DSS_DEBUG_SUPPORT=y
# CONFIG_OMAP2_DSS_RFBI is not set
CONFIG_OMAP2_DSS_VENC=y
CONFIG_OMAP2_DSS_SDI=y
CONFIG_OMAP2_DSS_DSI=y
CONFIG_OMAP2_DSS_USE_DSI_PLL=y
# CONFIG_OMAP2_DSS_FAKE_VSYNC is not set
CONFIG_OMAP2_DSS_MIN_FCK_PER_PCK=0

Display is samsung LE32M86

Any suggestion?

f