No such device /dev/ttyS1
 

Hi!
This is my first post on this forum. I use debian sid with kernel 2.6.4 and gnome 2.4.
I have modem a dial-up, is an us robotics of 56 kbps.
My internet conection worked well since some days ago, I use pon, and when I tried to connect to internet, I doen't connect. This is the log:
# plog
Sep 12 12:08:37 debi pppd[1785]: pppd 2.4.2 started by sancho, uid 1000
Sep 12 12:08:37 debi pppd[1785]: Failed to open /dev/ttyS1: No such
device
Sep 12 12:08:37 debi pppd[1785]: Exit.
Sep 12 12:08:54 debi pppd[1804]: pppd 2.4.2 started by sancho, uid 1000
Sep 12 12:08:54 debi pppd[1804]: Failed to open /dev/ttyS1: No such
device
Sep 12 12:08:54 debi pppd[1804]: Exit.

I can't connect with debian sid, but on the same hard disk I have fedora core 2, and it
works well with the same device port /dev/ttyS1, and the same with the live cd's slax and
knoppix, they go well with internet and the same port.

If I do:
setserial -gG /dev/ttyS1
I obtain the same message of No such device.

I've tried with:
/dev/.MAKADEV /dev/ttyS1
First I removed the device and later I created it with MAKEDEV, but I have the same problem. I've tried to create the same device with knod too but if fails too.

The more unusual thing is that if I put a live cd like knoppix or slax, then I mount my
debian partition with:
mount -t ext3 -o dev /dev/hda2 /mnt
With dev to use my /dev/ttyS1 of my debian sid.
And later I do:
chroot /mnt (to work and execute command with my debian)
With this, when I execute pon I have no message of No such device of /dev/ttyS1,
and my modem does the sound correctly but it doesn't connect to internet (it says
limited output)

I have recompiled the kernel, readed the how-to serial and searched threads over the net, but I don't get a solution. Anyone know what can I do? Is there a solution? I'm fear that
I have to reinstall debian, becasuse I haven't dsl.

Cheers!
Gerardo

Hmm...that sounds a bit strange. The only experience I have with that sort of thing is with my US Robotics 5610B modem. It was a bit of a hassle to get the drivers loaded, but when I finally did, it worked alright. (I use Slackware 10.) What it sounds like (in my limited knowledge) is that the driver for the modem isn't installed/loaded properly in Debian. It's possible that since ttyS1 isn't pointing to a recognized device that it's simply saying that (as far as ppp, etc. is concerned) the device isn't there. If you've got the same modem as I do, I'll post the How-To that I wrote on the matter (about 4 pages). Otherwise, poke around and make sure that you have the drivers installed and loaded properly. I hope this helps!

--Dane

Hi, thanks for your reply. I finally solved the problem. The problem was that I didn't loaded the module
of the serial port, I thought that it was a kernel or a module problem, because if i mounted my debian
partition on a live cd live slax or knoppix as I said worked well.

I loade on my /etc/modules the module: 8250_pnp, then I saw that the system loade the modules
8250 and serial_core that I suposse it needs too. With these modules debian recognized my device,
and know I turn to be on internet with debian and not fedora I used days ago.

Cheers!
Gerardo

Wonderful!
 

I'm glad you got it working and posted the solution. I'm sure it'll help somebody else in the same situation at some point down the line. Have a good one!

--Dane