ubuntu 16.04 can`t print gpu serial number

Hi there,
I have ubuntu 16.04.6 server os with RTX 2080ti GPU.
Tue Mar 12 17:13:03 2019
±----------------------------------------------------------------------------+
| NVIDIA-SMI 418.39 Driver Version: 418.39 CUDA Version: 10.1 |
|-------------------------------±---------------------±---------------------+
| GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr. ECC |
| Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. |
|===============================+======================+======================|
| 0 GeForce RTX 208… On | 00000000:04:00.0 Off | N/A |
| 22% 19C P8 1W / 250W | 0MiB / 10989MiB | 0% Default |
±------------------------------±---------------------±---------------------+
| 1 GeForce RTX 208… On | 00000000:06:00.0 Off | N/A |
| 22% 19C P8 21W / 250W | 0MiB / 10989MiB | 0% Default |
±------------------------------±---------------------±---------------------+
| 2 GeForce RTX 208… On | 00000000:07:00.0 Off | N/A |
| 22% 20C P8 20W / 250W | 0MiB / 10989MiB | 0% Default |
±------------------------------±---------------------±---------------------+
| 3 GeForce RTX 208… On | 00000000:08:00.0 Off | N/A |
| 22% 21C P8 6W / 250W | 0MiB / 10989MiB | 0% Default |
±------------------------------±---------------------±---------------------+
| 4 GeForce RTX 208… On | 00000000:0C:00.0 Off | N/A |
| 22% 19C P8 12W / 250W | 0MiB / 10989MiB | 0% Default |
±------------------------------±---------------------±---------------------+
| 5 GeForce RTX 208… On | 00000000:0D:00.0 Off | N/A |
| 22% 18C P8 1W / 250W | 0MiB / 10989MiB | 0% Default |
±------------------------------±---------------------±---------------------+
| 6 GeForce RTX 208… On | 00000000:0E:00.0 Off | N/A |
| 22% 20C P8 18W / 250W | 0MiB / 10989MiB | 0% Default |
±------------------------------±---------------------±---------------------+
| 7 GeForce RTX 208… On | 00000000:0F:00.0 Off | N/A |
| 22% 20C P8 22W / 250W | 0MiB / 10989MiB | 0% Default |
±------------------------------±---------------------±---------------------+

±----------------------------------------------------------------------------+
| Processes: GPU Memory |
| GPU PID Type Process name Usage |
|=============================================================================|
| No running processes found |
±----------------------------------------------------------------------------+

AND
root@desk-109:~# nvidia-smi -q |grep Serial
Serial Number : N/A
Serial Number : N/A
Serial Number : N/A
Serial Number : N/A
Serial Number : N/A
Serial Number : N/A
Serial Number : N/A
Serial Number : N/A

we have ton of PC,all of 1080ti can print but 2080ti never.
so,how i see Serial Number in linux,to replace broken gpu?