Trouble Shooting Guide – FarSync Drivers – Linux

This guide is suitable for the FarSync T-Series and USB products for Linux, where actions are version specific this is noted in the action.

For most users the FarSync Drivers product installation on Linux is quick and trouble free. There are however a very large number of versions of Linux in use together with a large number of kernel variants, this can give rise to problems getting the product working correctly in all configurations. This guide has been put together by the Support team at FarSite with the aim of helping users to quickly resolves issues which have been encountered before. Many of the problems appear to have been 'one offs' but they have been included just in case.

FarSite makes every effort to ensure that installation and configuration of our products is quick and trouble free on the widest possible variety of installations. If you have any suggestions to help us achieve that aim we will be pleased to hear from you, just send an email to .


Problem Symptom Possible Cause(s) Action
There are compile errors during the install process for the fsflex.c and farsync.c driver source files. From time to time the internal Kernel API's change.  This usually requires patches to be applied to the drivers to resolve the issue. Check to see if these patches are available on the support pages of the web site, or contact
There are no compile errors during the install process but there are unresolved symbols during link. The OEM driver needs the syncppp module and the WAN driver needs the syncppp and hdlc modules to be present.  It may be possible that you are installing on a distro that does not include these modules. Check the install documentation for details on how to include the additional modules required.  If this does not resolve the issue please contact
The farsync or flex driver driver will not start The slot is which the FarSync T-Series adapter has been installed is damaged. Try installing the adapter in another slot.

It may also be advisable to uninstall and reinstall the FarSync software with the card in its new location.

The adapter is not making good electrical contact with the PCI slot. Make sure that the contacts are clean. If necessary, also try installing the adapter in another slot.
The FarSync driver files are somehow corrupted or missing. Uninstall and reinstall the FarSync software.
The installation of the software failed in some way. See further details for checking the installation.
The FarSync T-Series adapter is faulty. The T-Series cards are very reliable, the adapter is very unlikely to be faulty. Try downloading and running the FarSync T-Series card test software to check the card (requires DOS). If, however, you do believe it to be faulty please return the adapter to FarSite for repair or replacement.
The original CD-ROM supplied with the product cannot be read without errors The FarSync product CD-ROM has become damaged or the CD reader being used is out of alignment or faulty. Download the drivers from the FarSite web site, see downloading.