Graphic card can't display power and Fan speed after overheat by Nvidia-smi

Hi all, I am using a workstation with 4 1080Ti GPU. Once I operate a pressure test by using up 250W of four GPUs for an hour. Error occurs as follows

There is an ERR! but not the Power usage and GPU Fan. But under windows it can work normally.
I have also prevented the nouveau from working.

testtest@hhh:~$ nvidia-smi
Tue Dec 12 22:20:33 2017
±----------------------------------------------------------------------------+
| NVIDIA-SMI 384.98 Driver Version: 384.98 |
|-------------------------------±---------------------±---------------------+
| 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 GTX 108… Off | 00000000:03:00.0 Off | N/A |
|ERR! 37C P0 ERR! / 250W | 0MiB / 11170MiB | 0% Default |
±------------------------------±---------------------±---------------------+
| 1 GeForce GTX 108… Off | 00000000:04:00.0 Off | N/A |
| 23% 31C P8 11W / 250W | 0MiB / 11172MiB | 0% Default |
±------------------------------±---------------------±---------------------+
| 2 GeForce GTX 108… Off | 00000000:81:00.0 Off | N/A |
| 23% 34C P8 14W / 250W | 0MiB / 11172MiB | 0% Default |
±------------------------------±---------------------±---------------------+
| 3 GeForce GTX 108… Off | 00000000:82:00.0 Off | N/A |
| 23% 32C P5 18W / 250W | 0MiB / 11172MiB | 0% Default |
±------------------------------±---------------------±---------------------+

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

testtest@hhh:~ testtest@hhh:~ lsmod | grep -i nouveau
testtest@hhh:~ lsmod | grep -i nouveau (Nothing output ) testtest@hhh:~ lspci | grep -i nv
03:00.0 VGA compatible controller: NVIDIA Corporation Device 1b06 (rev a1)
03:00.1 Audio device: NVIDIA Corporation Device 10ef (rev a1)
04:00.0 VGA compatible controller: NVIDIA Corporation Device 1b06 (rev a1)
04:00.1 Audio device: NVIDIA Corporation Device 10ef (rev a1)
81:00.0 VGA compatible controller: NVIDIA Corporation Device 1b06 (rev a1)
81:00.1 Audio device: NVIDIA Corporation Device 10ef (rev a1)
82:00.0 VGA compatible controller: NVIDIA Corporation Device 1b06 (rev a1)
82:00.1 Audio device: NVIDIA Corporation Device 10ef (rev a1)

Have you solved?