Modem Busy error
 

Hi!

I am not able to connect to net using wvdial as a normal user.
when i give command :

$wvdial ISP

it gives following message:

--> Cannot open /dev/ttyS1: Device or resource busy

But I can connect normally as root

The permissions of ttyS1 are as follows:
crw------- 1 root uucp 4, 65 Mar 20 08:03 /dev/ttyS1

I tried "chown"ing ttyS1, making wvdial suid but it didn't help
please guide

you can see the permissions arent for a normal user, just root. chmod 666 it

I had the same problem. However in my situation the problem occured after recompiling or upgrading kernel. Here's a link to post pertain to this situation.link here