我是第一次安装ubuntu。我还为我的nvidia显卡安装了驱动程序，但是当我尝试通过以下方法进入设置时：
nvidia-settings
它引发错误：
ERROR: Unable to load info from any available system
我尝试过：
nvidia-smi
输出：
Sun Nov 10 17:29:48 2019
+-----------------------------------------------------------------------------+
| NVIDIA-SMI 440.31 Driver Version: 440.31 CUDA Version: 10.2 |
|-------------------------------+----------------------+----------------------+
| 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... Off | 00000000:01:00.0 Off | N/A |
| 30% 33C P0 22W / 250W | 0MiB / 11019MiB | 0% Default |
+-------------------------------+----------------------+----------------------+
+-----------------------------------------------------------------------------+
| Processes: GPU Memory |
| GPU PID Type Process name Usage |
|=============================================================================|
| No running processes found |
+-----------------------------------------------------------------------------+
也：
sudo prime-select nvidia
给我：
Info: the nvidia profile is already set
我通过下载并运行直接安装了驱动程序：
chmod +x NVIDIA-Linux-x86_64-440.31.run
sudo ./NVIDIA-Linux-x86_64-440.31.run --no-x-check
有效。
有人知道该怎么做吗？ 预先感谢！