2002-03-13 11:58:13

by David Chow

[permalink] [raw]
Subject: USB-to-serial 2303

Hi, I've got a pl2303 adapter running 2.4.17 . I cannot write any
commands to my modem but I still read "RING" with some corrupted output
from my /dev/ttyUSB0 port. Is this driver still in beta or not working?
I would like to get some hints thanks.

regards,

David


2002-03-13 12:22:57

by Barry K. Nathan

[permalink] [raw]
Subject: Re: USB-to-serial 2303

> Hi, I've got a pl2303 adapter running 2.4.17 . I cannot write any
> commands to my modem but I still read "RING" with some corrupted output
> from my /dev/ttyUSB0 port. Is this driver still in beta or not working?
> I would like to get some hints thanks.

Hmmm... I use this driver on an almost-daily basis (it's hooked up to an
ISDN "modem" at 230.4Kbps since my cable modem service is often down) and
it seems to work perfectly for me. Some of its behavior was a bit odd
several releases back (2.4.11 or so??) but it's been stable for me for a
while now (probably since 2.4.14, if I had to guess).

The only suggestion I can think of is to make sure you're setting the
port's speed properly in whatever program you're using for the testing
(personally, I find minicom useful for this kind of stuff).

-Barry K. Nathan <[email protected]>

2002-03-13 16:38:43

by Greg KH

[permalink] [raw]
Subject: Re: USB-to-serial 2303

On Wed, Mar 13, 2002 at 07:57:42PM +0800, David Chow wrote:
> Hi, I've got a pl2303 adapter running 2.4.17 . I cannot write any
> commands to my modem but I still read "RING" with some corrupted output
> from my /dev/ttyUSB0 port. Is this driver still in beta or not working?
> I would like to get some hints thanks.

I do not know of any outstanding problems with this driver, no.
Can you load it with "debug=1" on the modprobe line and see if there is
any odd messages in the kernel debug log?

thanks,

greg k-h