omaplfb probing issue


I am trying to use Qt for beaglebone black by folowing this tutorial
But I have something wrong in my Kernel because the omaplfb is not probed:

Starting PVR
[ 79.066145] omaplfb: Unknown symbol register_vsync_cb (err 0)
[ 79.072205] omaplfb: Unknown symbol unregister_vsync_cb (err 0)
modprobe: ERROR: could not insert ‘omaplfb’: Unknown symbol in module, or unknown parameter (see dmesg)
[ 79.133859] Unable to handle kernel NULL pointer dereference at virtual address 00000000

I am using: Linux beaglebone 4.1.10 #11 PREEMPT Wed Nov 11 23:15:24 CET 2015 armv7l GNU/Linux

I enabled the DA8XX-FB flag in kernel config file but I still have the same issue, I pached the da8xx-fb.c file to add register_vsync_cb and unregister_vsync_cb function but it still not working.

Thank you for your help,


I’m having the exact same issue - did you ever manage to resolve this?

Thanks in advance for any help you can give me :slight_smile: