I just installed CentOS 5.1 on a Dell Vostro 200 (Intel G33) which has a Sunix PCI-Express (x1) 8-port RS-232 card installed. For me it looks like only 4 ports are recognized, but I'm not sure if it's even working with those 4.

From 'dmesg' I see this:

... Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing enabled ACPI: PCI Interrupt 0000:04:00.0[A] -> GSI 19 (level, low) -> IRQ 177 0000:04:00.0: ttyS0 at I/O 0xbf00 (irq = 177) is a 16550A 0000:04:00.0: ttyS1 at I/O 0xbf08 (irq = 177) is a 16550A 0000:04:00.0: ttyS2 at I/O 0xbe00 (irq = 177) is a 16550A 0000:04:00.0: ttyS3 at I/O 0xbe08 (irq = 177) is a 16550A Couldn't register serial port 0000:04:00.0: -28 ...

[root@smse2e ~]# ls -la /dev/ttyS* crw-rw---- 1 root uucp 4, 64 Dec 6 2007 /dev/ttyS0 crw-rw---- 1 root uucp 4, 65 Dec 6 2007 /dev/ttyS1 crw-rw---- 1 root uucp 4, 66 Dec 6 2007 /dev/ttyS2 crw-rw---- 1 root uucp 4, 67 Dec 6 2007 /dev/ttyS3

Link to the RS_232 card: http://www.sunix.com.tw/it/en/Product_Detail.php?cate=2&class_a_id=35&am... d=459

How can I get the other 4 enabled?

/Christopher Thorjussen

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