Can you please use the latest linux SDK 1.0.5 from the FX3 SDK: https://www.cypress.com/documentation/software-and-drivers/ez-usb-fx3-software-development-kit
Do let me know if you are getting the same errors after using the latest SDK.
Yes this has solved the issue. cyusb_linux now correctly loads and finds the device using the the VID and PID found by using lsusb in linux. Thank you.