Your problem remember me this not related thread, because the op describe facing same shutdown/reboot problem with a similar hw setup on dragonfish.
If you are using DF too, try to update on EE and see if It continue happen
Your problem remember me this not related thread, because the op describe facing same shutdown/reboot problem with a similar hw setup on dragonfish.
If you are using DF too, try to update on EE and see if It continue happen