dmesg | egrep -i 'nvidia|nouveau|drm'
[    2.528518] [drm] Initialized drm 1.1.0 20060810
[    2.660071] nvidia: module license 'NVIDIA' taints kernel.
[    2.665958] nvidia: module verification failed: signature and/or  required key missing - tainting kernel
[    2.678834] [drm] Initialized nvidia-drm 0.0.0 20150116 for 0000:01:00.0 on minor 0
[    2.678841] NVRM: loading NVIDIA UNIX x86_64 Kernel Module  340.96  Sun Nov  8 22:33:28 PST 2015
[    3.099570] input: HDA NVidia HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input12
[    3.099608] input: HDA NVidia HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input13