ubuntu@ubuntu:~$ sudo gpu-manager 
last_boot_file: /var/lib/ubuntu-drivers-common/last_gfx_boot
new_boot_file: /var/lib/ubuntu-drivers-common/last_gfx_boot
can't access /run/u-d-c-nvidia-was-loaded file
/etc/modprobe.d is not a file
can't access /run/u-d-c-fglrx-was-loaded file
/etc/modprobe.d is not a file
/etc/modprobe.d is not a file
/etc/modprobe.d is not a file
/etc/modprobe.d is not a file
Looking for fglrx modules in /lib/modules/4.4.0-31-generic/updates/dkms
Error: can't open /lib/modules/4.4.0-31-generic/updates/dkms
Looking for nvidia modules in /lib/modules/4.4.0-31-generic/updates/dkms
Error: can't open /lib/modules/4.4.0-31-generic/updates/dkms
Is nvidia loaded? no
Was nvidia unloaded? no
Is nvidia blacklisted? no
Is fglrx loaded? no
Was fglrx unloaded? no
Is fglrx blacklisted? no
Is intel loaded? no
Is radeon loaded? no
Is radeon blacklisted? no
Is amdgpu loaded? no
Is amdgpu blacklisted? no
Is nouveau loaded? yes
Is nouveau blacklisted? no
Is fglrx kernel module available? no
Is nvidia kernel module available? no
Vendor/Device Id: 10de:13c2
BusID "PCI:2@0:0:0"
Is boot vga? yes
Error: can't access /sys/bus/pci/devices/0000:02:00.0/driver
The device is not bound to any driver. Skipping...
Error : Failed to open /dev/dri
Error : Failed to open /dev/dri
Error : Failed to open /dev/dri
Error : Failed to open /dev/dri
Does it require offloading? no
last cards number = 0
Has amd? no
Has intel? no
Has nvidia? no
How many cards? 0
Has the system changed? No
main_arch_path x86_64-linux-gnu, other_arch_path i386-linux-gnu
update-alternatives: error: no alternatives for x86_64-linux-gnu_gfxcore_conf
Current alternative: /usr/lib/x86_64-linux-gnu/mesa/ld.so.conf
Current core alternative: (null)
Current egl alternative: /usr/lib/x86_64-linux-gnu/mesa-egl/ld.so.conf
Is nvidia enabled? no
Is nvidia egl enabled? no
Is fglrx enabled? no
Is mesa enabled? yes
Is mesa egl enabled? yes
Is pxpress enabled? no
Is prime enabled? no
Is prime egl enabled? no
Is nvidia available? no
Is nvidia egl available? no
Is fglrx available? no
Is fglrx-core available? no
Is mesa available? yes
Is mesa egl available? yes
Is pxpress available? no
Is prime available? no
Is prime egl available? no