I chose IRQ 5 because I was sometimes having difficulty connecting
when the IRQ was set to 3 (the default) even though /dev/ttyS1 at
IRQ3 is not in use. This problem manifested when I was trying a net
install of FreeBSD (which I later decided I don't currently have the
time for). The modem response is much better on IRQ 5 (so long as I
can keep it set!)
On Sun, Sep 26, 1999 at 11:05:07AM -0500, Brian Servis wrote:
>
> Usually when X trips your modem it indicates an IRQ conflict with your
> graphics card and modem. If I remember correctly IRQ's are not used in
> console mode but are in graphics mode. Most graphics cards that I have
> seen tend to use IRQ9(shared with IRQ2). Can you change the IRQ of the
> modem to another unused IRQ? What are the results of 'setserial -bg
> /dev/ttyS?' and 'cat /proc/interrupts'? Mine are not very consistent:
>
I'm *almost* positive that my graphics card is not on IRQ 5 and I
don't have trouble with the modem cutting out during an X session only
when I startx while on line (If one user is on line using XFree on :0
and another user starts X on :1 or even a third on :2 I haven't seen
the connection break....
This is some what of a digression I think, my main concern is that the
IRQ of /dev/ttyS3 changes, where can I look for this???
>From an XTerm while online:
> What is on each port
amergin:# setserial -bg /dev/ttyS?
/dev/ttyS0 at 0x03f8 (irq = 4) is a 16550A
/dev/ttyS1 at 0x02f8 (irq = 3) is a 16550A
/dev/ttyS3 at 0x02e8 (irq = 5) is a 16550A
amergin:# cat /proc/interrupts
CPU0
0: 8436030 XT-PIC timer
1: 29744 XT-PIC keyboard
2: 0 XT-PIC cascade
5: 382639 XT-PIC serial
6: 18 XT-PIC floppy
12: 817466 XT-PIC PS/2 Mouse
13: 0 XT-PIC fpu
14: 3845186 XT-PIC ide0
15: 2272540 XT-PIC ide1
NMI: 0
>
--
Email: [EMAIL PROTECTED] Resume:
[EMAIL PROTECTED]
http://users.ids.net/~tuan/resume
