My system already had one serial port, ttyS0 which is working. I've installed a Dynamode 2-port serial card and the kernel sees the two ports. This provides two ports is: PCI Spec Revision 2 compliant Compatible with 16C550 UART and says that it supports Linux. However, I can't use them. I've tried using both minicom and faxxaddmodem (I'm setting up a Hylafax modem bank). Can anyone suggest what I need to do please. [root@stan2 ~]# dmesg|grep tty [ 0.000000] console [tty0] enabled [ 0.690683] serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A [ 0.711711] 00:04: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A [ 0.712208] 0000:00:09.0: ttyS1 at I/O 0xec00 (irq = 17) is a XScale [ 0.712602] 0000:00:09.0: ttyS2 at I/O 0xe880 (irq = 17) is a XScale [root@stan2 ~]# lspci|grep -i serial 00:09.0 Serial controller: Device 4348:3253 (rev 10) [root@stan2 ~]# setserial /dev/ttyS1 /dev/ttyS1, UART: undefined, Port: 0xec00, IRQ: 17 [root@stan2 ~]# ll /dev/ttyS* crw-------. 1 uucp dialout 4, 64 Oct 31 14:33 /dev/ttyS0 crw-rw----. 1 root dialout 4, 65 Oct 31 14:34 /dev/ttyS1 crw-rw----. 1 root dialout 4, 66 Oct 31 14:34 /dev/ttyS2 crw-rw----. 1 root dialout 4, 67 Oct 31 2012 /dev/ttyS3 [root@stan2 ~]# -- Gary Stainburn Group I.T. Manager Ringways Garages http://www.ringways.co.uk -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org