GPU is not recognized

Hi,
The GPU is not recognized. Following are the dmesg log

[ 4027.278098] resource sanity check: requesting [mem 0x000c0000-0x000fffff], which spans more than PCI Bus 0000:00 [mem 0x000c0000-0x000dffff window]
[ 4027.278104] caller os_map_kernel_space.part.0+0x77/0xa0 [nvidia] mapping multiple BARs
[ 4029.274697] resource sanity check: requesting [mem 0x000c0000-0x000fffff], which spans more than PCI Bus 0000:00 [mem 0x000c0000-0x000dffff window]
[ 4029.274703] caller os_map_kernel_space.part.0+0x77/0xa0 [nvidia] mapping multiple BARs
[ 4030.182184] resource sanity check: requesting [mem 0x000c0000-0x000fffff], which spans more than PCI Bus 0000:00 [mem 0x000c0000-0x000dffff window]
[ 4030.182190] caller os_map_kernel_space.part.0+0x77/0xa0 [nvidia] mapping multiple BARs
[ 4278.303609] NVRM: GPU at PCI:0000:43:00: GPU-0fe14172-df22-0692-a096-529315350f19
[ 4278.303615] NVRM: Xid (PCI:0000:43:00): 79, pid=0, GPU has fallen off the bus.
[ 4278.303618] NVRM: GPU 0000:43:00.0: GPU has fallen off the bus.
[ 4278.303646] NVRM: GPU 0000:43:00.0: GPU serial number is xxxxxx.
[ 4278.303657] NVRM: A GPU crash dump has been created. If possible, please run
NVRM: nvidia-bug-report.sh as root to collect this data before
NVRM: the NVIDIA kernel module is unloaded.
[ 4279.068955] nvidia-gpu 0000:43:00.3: can’t change power state from D3cold to D0 (config space inaccessible)
[ 4279.069044] xhci_hcd 0000:43:00.2: can’t change power state from D3cold to D0 (config space inaccessible)
[ 4279.069103] xhci_hcd 0000:43:00.2: can’t change power state from D3cold to D0 (config space inaccessible)
[ 4279.069153] xhci_hcd 0000:43:00.2: Controller not ready at resume -19
[ 4279.069156] xhci_hcd 0000:43:00.2: PCI post-resume error -19!
[ 4279.069186] xhci_hcd 0000:43:00.2: HC died; cleaning up
[ 4280.069400] nvidia-gpu 0000:43:00.3: i2c timeout error ffffffff
[ 4280.069437] ucsi_ccg 4-0008: i2c_transfer failed -110
[ 4283.814468] nvidia-gpu 0000:43:00.3: invalid power transition (from D3cold to D3hot)
[92397.157086] nvidia-gpu 0000:43:00.3: can’t change power state from D3cold to D0 (config space inaccessible)
[92398.157300] nvidia-gpu 0000:43:00.3: i2c timeout error ffffffff
[92398.157329] ucsi_ccg 4-0008: i2c_transfer failed -110
[92401.433376] nvidia-gpu 0000:43:00.3: invalid power transition (from D3cold to D3hot)
[98301.023379] nvidia-gpu 0000:43:00.3: can’t change power state from D3cold to D0 (config space inaccessible)
[98302.023683] nvidia-gpu 0000:43:00.3: i2c timeout error ffffffff
[98302.023706] ucsi_ccg 4-0008: i2c_transfer failed -110
[98305.774260] nvidia-gpu 0000:43:00.3: invalid power transition (from D3cold to D3hot)
[98348.731857] nvidia-gpu 0000:43:00.3: can’t change power state from D3cold to D0 (config space inaccessible)
[98349.731955] nvidia-gpu 0000:43:00.3: i2c timeout error ffffffff
[98349.731978] ucsi_ccg 4-0008: i2c_transfer failed -110
[98352.843679] nvidia-gpu 0000:43:00.3: invalid power transition (from D3cold to D3hot)
[98353.302933] nvidia-gpu 0000:43:00.3: can’t change power state from D3cold to D0 (config space inaccessible)
[98356.926021] nvidia-gpu 0000:43:00.3: invalid power transition (from D3cold to D3hot)
[98394.774828] nvidia-gpu 0000:43:00.3: can’t change power state from D3cold to D0 (config space inaccessible)
[98395.775234] nvidia-gpu 0000:43:00.3: i2c timeout error ffffffff
[98395.775262] ucsi_ccg 4-0008: i2c_transfer failed -110
[98399.366157] nvidia-gpu 0000:43:00.3: invalid power transition (from D3cold to D3hot)
[98404.181966] nvidia-gpu 0000:43:00.3: can’t change power state from D3cold to D0 (config space inaccessible)
[98405.182182] nvidia-gpu 0000:43:00.3: i2c timeout error ffffffff
[98405.182203] ucsi_ccg 4-0008: i2c_transfer failed -110
[98408.714151] nvidia-gpu 0000:43:00.3: invalid power transition (from D3cold to D3hot)
[98565.429736] [drm] [nvidia-drm] [GPU ID 0x00004300] Unloading driver
[98567.964204] nvidia-modeset: Unloading
[99124.646548] nvidia-gpu 0000:43:00.3: can’t change power state from D3cold to D0 (config space inaccessible)
[99125.646686] nvidia-gpu 0000:43:00.3: i2c timeout error ffffffff
[99125.646712] ucsi_ccg 4-0008: i2c_transfer failed -110
[99129.150760] nvidia-gpu 0000:43:00.3: invalid power transition (from D3cold to D3hot)

================================
The OS version is
NAME=“Ubuntu”
VERSION=“20.10 (Groovy Gorilla)”
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME=“Ubuntu 20.10”
VERSION_ID=“20.10”

========================
Drivers installed are
NVRM version: NVIDIA UNIX x86_64 Kernel Module 470.57.02 Tue Jul 13 16:14:05 UTC 2021
GCC version: gcc version 10.3.0 (Ubuntu 10.3.0-1ubuntu1~20.10)

Also please find the nvida-bug-repot output attached.
nvidia-bug-report.log.gz (745.6 KB)