On Wed, 19 Dec 2007 17:33:16 -0800 (PST) David Scriven <davidwriter@xxxxxxxxx> wrote: > What's left - get a new card?? Did you add the kernel boot parameter in grub.conf? Mine looks like this: title Fedora (2.6.23.8-63.fc8) root (hd0,2) kernel /vmlinuz-2.6.23.8-63.fc8 ro root=LABEL=F8ROOT64 quiet 8250.nr_uarts=9 initrd /initrd-2.6.23.8-63.fc8.img The "9" as the value for 8250.nr_uarts tells the kernel to allocate slots for 9 serial ports in its internal tables. The default is only 4. I use 9 to get the 1 native serial port on my motherboard plus the 8 ports in my 8 port card to work. (Of course if you are booting the Xen kernel, completely different trickery is required).