From: Edenyard
Over the weekend, I installed Efax and Efax-gtk to get Linux to behave as a fax machine. It looks good but I ran into a problem with accessing /dev/ttyS1 (where my modem is), which I'd appreciate some help with.
Running Efax-gtk as an ordinary user, I got an error message when it tried to access the modem, saying that permission was denied. I checked the ownership of /dev/ttyS1 and it is root:uucp. I then edited /etc/groups and added myself to the 'uucp' group, but this didn't fix the problem. So I put that back as it was and chowned /dev/ttyS1 to root:users, since I know I'm in in the group 'users'. That worked, but it's left me feeling slightly guilty: should I have altered the ownership of /dev/ttyS1? I suspect not!
So how do I make it all work without chowning /dev/ttyS1, please? It works without any of these tweaks if I run Efax-gtk as 'root', as bad as that sounds!
Interesting that you edited /etc/groups directly.
I have a so called Linmodem (Lucent chipset) and the device is /dev/ttyLT0.
I don't have access to my system at the moment (at work) but AFAICR after installing I did;
$su #chown root:modem /dev/ttyLT0 #chmod 660 /dev/ttyLT0 #adduser bart modem #[ctrl-D] $
where bart is my ordinary user id. This seems to work fine.
Regards,
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