Re: 3c509 Detection problem. Experienced user needs assistance.
Charles Read wrote:
> I've had similar trouble with a PnP modem, even
> a. 'dmesg | more' indicates the kernel finds the serial
> device for the modem.
> b. IRQs are uniquely assigned.
> c. setserial shows all configuration parameters for
> the modem to be sound.
> My error is:
> # cu --speed 115200 --line /dev/ttyS1
> cu: open (/dev/ttyS1): Permission denied
> cu: /dev/ttyS1: Line in use
> Please post your solution if you find one!
Well, I've got a few ideas for you. Right off the bat I am wondering
why you are using /dev/ttyS1 instead of /dev/cua1 (which is one of the
standard call out devices). As I remember, the /dev/ttySx's are
normally used as call-in devices (whether or not this actually makes a
difference to the system I do not know).
I'm not familiar with the cu program, as I normally use the setserial
program (setserial /dev/cua1 spd_vhi) to change values for the modem. I
think I once ran into a problem with a PCMCIA modem being tied up
continually, and also as a result causing the mouse to not respond on
the laptop I was using. I came to find out that I had to explicitly
tell the kernel that the IRQ for the mouse (PS/2) was not to be assigned
to any requesting PCMCIA drivers/devices. After that both devices
If I get some time, I'll try to research your problem in more detail and
get back to you. (Got your address in my book now.)
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