I don't know if one of this tools "sax" or "sax2" is available on your SuSE system (on older version you can configure your x server with one of this tools).
Maybe you can read something in the section of trouble-shooting of your manual (book, pdf, whatever).
If this doesn't work, please boot from the first medium (install CD or DVD) and choose the "repair current system". I hope this option is still available.
