Gonna go out on a limb and guess this is a video problem so here is the output 
of lshw -c video
  *-display                 
       description: VGA compatible controller
       product: Intel Corporation
       vendor: Intel Corporation
       physical id: 2
       bus info: pci@0000:00:02.0
       version: 04
       width: 64 bits
       clock: 33MHz
       capabilities: pciexpress msi pm vga_controller bus_master cap_list rom
       configuration: driver=i915 latency=0
       resources: irq:151 memory:d3000000-d3ffffff memory:30000000-3fffffff 
ioport:4000(size=64) memory:c0000-dffff
  *-display
       description: 3D controller
       product: TU117M [GeForce GTX 1650 Mobile / Max-Q]
       vendor: NVIDIA Corporation
       physical id: 0
       bus info: pci@0000:02:00.0
       version: a1
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list rom
       configuration: driver=nouveau latency=0
       resources: irq:150 memory:d4000000-d4ffffff memory:90000000-9fffffff 
memory:a0000000-a1ffffff ioport:3000(size=128) memory:d5000000-d507ffff

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https://bugs.launchpad.net/bugs/1926233

Title:
  Black screen after upgrade 20.04 -> 20.10

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