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Serial Com Port Problem ttySx

Hi all

CentOS 5 on a DSEB-DG motherboard

I am having trouble communicating with my APC UPS on /dev/ttyS0.

What I do know:

UPS and cables are ok they work ok on my other server. CentOS on a Intel S3210SH M/B

Comparing the serial ports in the Hardware browser I notice that the Working system (Intel) is listed as such

16500A-compatible Com port
16500A-compatible Com port
16500A-compatible Com port
16500A-compatible Com port


The non working system lists

16500A-compatible Com port
16500A-compatible Com port


The com ports are set in the bios as:

Com1 3F8/IRQ4

Com2 2F8/IRQ3

So I can see why the system does not work.

What I do NOT know:

How can I correct this problem. Do I need to re-install the drivers? if so HOW.

Thanks for taking the time to read this.

Dave

Comments

  • gomergomer Posts: 158
    can you provide the output of the following commands:

    grep serial /var/log/dmesg

    and

    cat /proc/tty/driver/serial

    you may need to run both as root.
  • gomergomer Posts: 158
    Also, your working board uses a SMSC SCH5027D to provide the serial port functionality. Do we know what Chip is on the Asus board?
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