# Technical Issues and Help

## Import Issues with torchvision

When working with PyTorch’s Fast RCNN, you may encounter the following import error:

```python
from torchvision import _C as C
ImportError: /usr/lib/python3/dist-packages/torchvision/_C.cpython-36m-x86_64-linux-gnu.so: undefined symbol: _ZN3c107Warning4warnENS_14SourceLocationENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE
```

This is a common problem and can occur due to mismatched libraries or installation issues.

## TensorBoardX Segmentation Fault Issues

Some users have reported segmentation faults when importing TensorBoardX. This might be related to the TensorFlow installation. If you experience this, consider the following:

- Ensure TensorFlow is correctly installed.
- Uninstall and reinstall TensorFlow if necessary.

## WIFI Connectivity Issues

If your WIFI cuts out when traveling internationally, like using a TensorBook in the UK after ordering from the US, check these potentials:

- Ensure network settings are correctly configured for the new region.
- Test the connection with other devices to confirm it’s not device-specific.

## Hibernation Problems

If your laptop does not wake up from hibernation properly, verify the following settings:

- Ensure power button configurations are set correctly.
- Consider whether any peripherals could be interfering with the wake-up process.

## Fan and Battery Usage Monitoring

If your TensorBook experiences heat issues under heavy load, you can check fan settings (if available) to ensure it's running efficiently. Problems with battery usage or fan responsiveness should be monitored closely.