Serial port not working in 10.10

[Nils Kassube]

Goran Hasse wrote:
> I have tried all kinds of serial-modules (witch should it bee?) and
> both minicom and cu (connect unix) without success. So I think it is
> a device driver problem...

Unless you have compiled your own kernel, the driver for the serial 
ports should be in the kernel, you don't need extra modules. You could 
check if the serial ports are detected with the command

dmesg|grep 8250

in a terminal. The output should look like this:

[    0.382331] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[    0.382481] serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A

The second line tells you which port is detected, if there are several 
ports, there should be individual lines for each port. If you only see 
the first line, there is no port detected. However if you have some 
serial card with non-standard hardware ports, you may need the setserial 
program to initialize the port(s) on that card.


Nils