SurfaceFlinger 無法進入Android LDB 無畫面

求各位大大 給幫助一下，謝謝
移植sabresd 公版code
建立屬於公司版子分支
uboot 移植OK
但移植kernel,device所build出來的boot.img
會有SurfaceFlinger 的問題，因此 LDB 無畫面

init: Service 'magd' (pid 224) exited with status 255
init: Service 'surfaceflinger' (pid 213) killed by signal 6
init: Service 'surfaceflinger' (pid 213) killing any children in process group
init: Service 'zygote' is being killed...
init: Service 'zygote' (pid 221) killed by signal 9
init: Service 'zygote' (pid 221) killing any children in process group
init: write_file: Unable to open '/sys/android_power/request_state': No such file or directory
init: write_file: Unable to write to '/sys/power/state': Invalid argument
init: Service 'media' is being killed...
init: Service 'netd' is being killed...
init: Service 'media' (pid 217) killed by signal 9
init: Service 'media' (pid 217) killing any children in process group
init: Service 'netd' (pid 214) killed by signal 9
init: Service 'netd' (pid 214) killing any children in process group
...
W imx6.gralloc: using (fd=12)<----可以看到畫面近系統是fd=13
...
F SurfaceFlinger: no suitable EGLConfig found, giving up