Nvidia-smi on HP ZBook Studio G8 Mobile Workstation

What is the output of the command (to be executed in a terminal window)

sudo lshw -C display

Manfred, This is the output: *-display
       description: VGA compatible controller
       product: Intel Corporation
       vendor: Intel Corporation
       physical id: 2
       bus info: pci@0000:00:02.0
       logical name: /dev/fb0
       version: 01
       width: 64 bits
       clock: 33MHz
       capabilities: pciexpress msi pm vga_controller bus_master cap_list fb
       configuration: depth=32 driver=i915 latency=0 mode=3840x2160 visual=truecolor xres=3840 yres=2160
       resources: iomemory:640-63f iomemory:400-3ff irq:183 memory:644c000000-644cffffff memory:4000000000-400fffffff ioport:4000(size=64) memory:c0000-dffff memory:4010000000-4016ffffff memory:4020000000-40ffffffff

There is no trace of a NVidia display adapter in your output.

Can you check in the BIOS whether it it is listed there and maybe is deactivated?

Manfred, I did not see NVIDIA graphics in the BIOS options. I had two options in Advanced options of Graphics- UMA Graphics and Hybrid Graphics. But in the early stages when Ubuntu was installed nvidia-smi command showed me some output ( I have not observed it keenly).

Thank you.

What are the specifications of your system? Is there an NVidia display adapter in the system?
What was the output of the nvidia-smi command before the updates? If it was something like "no NVidia GPU available" and now it is "no output at all", then is may be caused by a modification of the nvidia-smi command and probably can be neglected. If in the past nvidia-smi correctly identified an NVidia GPU and does not show one now, then this is a severe problem.

Manfred, my system has a NVIDIA GeForce RTX 3080. nvidia-smi showed something but it did not say "no Nvidia GPU available". This was some of he output of my system specifications (in Red)

id:
generic:0
description: Unassigned class
product: NVIDIA Corporation
vendor: NVIDIA Corporation
physical id:
0
bus info:
pci@0000:01:00.0
version: ff
width: 32 bits
clock: 66MHz
capabilities: bus_master vga_palette cap_list
configuration:
latency = 255
maxlatency = 255
mingnt = 255
resources:
memory : 6d000000-6dffffff
memory : 6000000000-63ffffffff
memory : 6400000000-6401ffffff
ioport : 3000(size=128)
memory : 6e080000-6e0fffff