訊息如下：
bash-4.2# dmesg | grep 'scsi'
[ 15.940203] scsi2 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 7.0
[ 17.535750] scsi 2:0:6:0: Scanner Scanner 600 1.91 PQ: 0 ANSI: 3 CCS
[ 17.535905] scsi target2:0:6: Beginning Domain Validation
[ 17.585875] (scsi2:A:6:0): refuses synchronous negotiation. Using asynchronous transfers
[ 17.621355] scsi target2:0:6: Domain Validation skipping write tests
[ 17.621447] scsi target2:0:6: Ending Domain Validation
[ 17.622535] scsi: <fdomain> Detection failed (no card)
想請問：scsi: <fdomain> Detection failed (no card) 是什麼樣的錯誤？如何修正？
因為應該是這個錯誤造成 /dev 裡沒有掃描器的代號，以致 XSane 抓不到掃描器
