[   25.875641] Disabling lock debugging due to kernel taint
[   25.885709] nvidia: module verification failed: signature and/or  required key missing - tainting kernel
[   25.890234] NVRM: The NVIDIA GeForce 9600 GT GPU installed in this system is
[   25.890234] NVRM:  supported through the NVIDIA 340.xx Legacy drivers. Please
[   25.890234] NVRM:  visit http://www.nvidia.com/object/unix.html for more
[   25.890234] NVRM:  information.  The 346.72 NVIDIA driver will ignore
[   25.890234] NVRM:  this GPU.  Continuing probe...
[   25.890390] vgaarb: device changed decodes: PCI:0000:01:00.0,olddecodes=io+mem,decodes=non