Solution
1.Use the latest drivers and operating system.
This issue is often seen in 2021 Q3 or previous version of NI Linux Device Drivers. This issue is fixed in NI Linux Device Drivers 2021Q4, so you may use the latest version of driver that is available. You are encourage to use RHEL or CentOS 7.9 or above.
2. Ensure that you have installed all the packages as stated in
Readme .
If you are using the latest driver (2021Q4 or above) in RHEL/CentOS version 7.9 or above, but you still see this error, you will need to ensure that you have installed all the packages listed in readme.
Make sure that you install all 3 packages (
ni-488.2,
libni4882-devel, and
ni-488.2-iotrace-support) for NI-488.2.
3. If you still see the error after installing all three packages, there are another two rare possibilities.
- Missing libnipython package.
- Check in /usr/local/lib64 for a package called libniPythonInterface.so.
- Sometimes the installer fails to update this library environment variable. This is an easy fix:
- First, use a echo $LD_LIBRARY_PATH command on the terminal to see if it even exists. If not, then add this environment variable. For example, we can edit the ~/.bash_profile (using the vi or nano command for using a text editor on command line) and add this variable with the export keyword.
- If this variable exists, simply add to the path through the terminal or by editing that bash profile file (or .rc file in your home directory). Check out Linux environment variable tips and tricks for more details about environment variables on RHEL distros.