Gpu-manager can't access GPU driver

  • Ubuntu 18.04
  • Kernel 5.3.0-53-generic
  • CUDA 11.0

After installed CUDA 11.0, gpu-manager outputs the following error mesage:

Error: can't access /sys/bus/pci/devices/0000:00:02.0/driver

The whole message is here:

log_file: /var/log/gpu-manager.log
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 /opt/amdgpu-pro/bin/amdgpu-pro-px
Looking for nvidia modules in /lib/modules/5.3.0-53-generic/updates/dkms
Found nvidia module: nvidia.ko
Looking for amdgpu modules in /lib/modules/5.3.0-53-generic/updates/dkms
Is nvidia loaded? yes
Was nvidia unloaded? no
Is nvidia blacklisted? no
Is intel loaded? yes
Is radeon loaded? no
Is radeon blacklisted? no
Is amdgpu loaded? no
Is amdgpu blacklisted? no
Is amdgpu versioned? no
Is amdgpu pro stack? no
Is nouveau loaded? no
Is nouveau blacklisted? yes
Is nvidia kernel module available? yes
Is amdgpu kernel module available? no
Vendor/Device Id: 8086:3e98
BusID "PCI:0@0:2:0"
Is boot vga? no
Error: can't access /sys/bus/pci/devices/0000:00:02.0/driver
The device is not bound to any driver.
Vendor/Device Id: 10de:1ed0
BusID "PCI:1@0:0:0"
Is boot vga? yes
Skipping "/dev/dri/card0", driven by "nvidia-drm"
Skipping "/dev/dri/card0", driven by "nvidia-drm"
Skipping "/dev/dri/card0", driven by "nvidia-drm"
Skipping "/dev/dri/card0", driven by "nvidia-drm"
Does it require offloading? no
last cards number = 2
Has amd? no
Has intel? yes
Has nvidia? yes
How many cards? 2
Has the system changed? No
Unsupported discrete card vendor: 8086
Nothing to do

When I try to graphical login by lightdm greeter, the mouse and keyboard does’t work. I wonder it is because of this error.

Please help me.