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Run the Signal Analyzer Demo failed

evm: 816x DDR2 evm rev:b, sdk: ezsdk_dm816x-evm_5_00_00_09. I was able to download the above SDK, make the changes for DDR2 memory support recompile u-boot and get the kernel to boot and run. My question is how to get the demo signal analyzer demo to run on this board. When I use the command "./sigan_demo_app -qws", the com print

"root@dm816x-evm:/usr/share/ti/ti-integra-demos# ./sigan_demo_app -qws
QLinuxFbScreen::connect: Inappropriate ioctl for device
Error reading fixed information
QLinuxFbScreen::connect: Inappropriate ioctl for device
Error reading fixed information
QLinuxFbScreen::connect: Inappropriate ioctl for device
Error reading fixed information
"

 What should I do now next??