@sohel: I can see from dmesg that "bumblebeed" is in use. You should either remove bumblebee (and all of its packages) or disable the gpumanager (by passing "nogpumanager" as a boot parameter).
@sohel: I can see from dmesg that "bumblebeed" is in use. You should
either remove bumblebee (and all of its packages) or disable the
gpumanager (by passing "nogpumanager" as a boot parameter).