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[ubuntu] 6-port RS232 serial PCI card - 2 ports stop working

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http://ubuntuforums.org – 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 (Hardware)

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Submitted by colm on 11/26/2012 – Made popular on 11/26/2012

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