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Thread: 6-port RS232 serial PCI card - 2 ports stop working

  1. #1
    Join Date
    Dec 2010
    Beans
    51

    6-port RS232 serial PCI card - 2 ports stop working

    Hi experts,
    My old Ubuntu 11.10 crashed. I installed brand new 12.04. However my serial PCI card starts to give me problems. My card should give me 6 RS232 serial ports. However only 4 are working. I googled and I have found some commands to show the information on my serial ports. They were used to be ttyS[456789]

    Code:
    dzhao@Server:~$ dmesg | grep tty
    [    0.000000] console [tty0] enabled
    [    1.234707] serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
    [    1.434548] 00:0c: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
    [    1.503406] 0000:08:00.0: ttyS4 at I/O 0xe080 (irq = 16) is a ST16650V2
    [    1.568669] 0000:08:00.1: ttyS5 at I/O 0xe400 (irq = 17) is a ST16650V2
    [    1.626564] 0000:08:00.2: ttyS6 at I/O 0xec00 (irq = 18) is a 16550A
    [    1.691837] 0000:08:00.2: ttyS7 at I/O 0xe480 (irq = 18) is a 16550A
    dzhao@Server:~$ setserial -g /dev/ttyS[456789]
    /dev/ttyS4, UART: 16650V2, Port: 0xe080, IRQ: 16
    /dev/ttyS5, UART: 16650V2, Port: 0xe400, IRQ: 17
    /dev/ttyS6, UART: 16550A, Port: 0xec00, IRQ: 18
    /dev/ttyS7, UART: 16550A, Port: 0xe480, IRQ: 18
    /dev/ttyS8, UART: unknown, Port: 0x0000, IRQ: 0
    /dev/ttyS9, UART: unknown, Port: 0x0000, IRQ: 0
    Apparently the last two are showing me "unknown" status.. What does that mean? How can I fix it?

    Can anybody please help..
    Thanks!!

  2. #2
    Join Date
    Dec 2010
    Beans
    51

    Re: 6-port RS232 serial PCI card - 2 ports stop working

    Still need help... Thanks!!

  3. #3
    Join Date
    Jan 2010
    Location
    Hyperborea
    Beans
    1,687
    Distro
    Ubuntu

    Re: 6-port RS232 serial PCI card - 2 ports stop working

    The only thing that I can think of is to take out the card and re-seat it.
    It is possible that plugging things into the card has made it move in it's slot.
    Switch off the computer first!

  4. #4
    Join Date
    Dec 2010
    Beans
    51

    Re: 6-port RS232 serial PCI card - 2 ports stop working

    I never touched the hardware though... All I did was reinstalling the Ubuntu OS. However I will give it a try tonight! Thank you very much Coldraven

  5. #5
    Join Date
    Aug 2008
    Beans
    29

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