Serial port problems (Fedore core 1)

skguha · 11-14-2005, 03:17 AM

Hi,

I am not very sure whether this is a hardware or a software problem but my serial port doesn't seem to be working....

i have connected it to a meter and am trying to poll the meter....

this was working a couple of days back and i have no idea why it is not working now.....i will be really grateful if someone can tell me what i shud look into...it is connected to Com2 i.e. ttyS1

this is the output of "dmesg | grep ttyS"

Quote:

ttyS0 at 0x03f8 (irq = 4) is a 16550A
ttyS1 at 0x02f8 (irq = 3) is a 16550A

here r the output of some other commands.....the serial ports don't show up in /proc/interrupts.....

Code:

[root@localhost root]# cat /proc/interrupts
           CPU0
  0:    2150953          XT-PIC  timer
  1:          5          XT-PIC  keyboard
  2:          0          XT-PIC  cascade
  8:          1          XT-PIC  rtc
 10:      51132          XT-PIC  usb-uhci
 11:      24998          XT-PIC  ymfpci
 14:      42717          XT-PIC  ide0
 15:          1          XT-PIC  ide1
NMI:          0
ERR:          0


[root@localhost root]# cat /proc/ioports
0000-001f : dma1
0020-003f : pic1
0040-005f : timer
0060-006f : keyboard
0070-007f : rtc

i was able to poll the meter last week but now i am unable to do so .....pls advice....

ankscorek · 11-29-2005, 10:43 AM

post the o/p of lspci