Cannot unlock device /dev/ttyS0

Posted on 2013-01-29
Medium Priority
Last Modified: 2013-03-07
I am using Gnokii to send alert that is done through a Mobile phone connected to the Linux server through USB cable, and I used “port = /dev/ttyS0” under gnokii setting.

It work for some time and stops with showing below error message

[root@monitor#] gnokii --identify
GNOKII Version 0.6.19
Telephone interface init failed: Command timed out.
Cannot unlock device.
Command timed out.

to make this work again, server has to restart or disconnect and connect Nokia phone again

Do you know what does this error means, and how to solve?

this is really an argent matter.

Question by:uknet80
  • 4
  • 2
LVL 11

Assisted Solution

by:Chris Sandrini
Chris Sandrini earned 664 total points
ID: 38833909

What does your messages log file tell you when you connect your device? /var/log/messages. Also it would be good to know what Linux you are using.

Author Comment

ID: 38833964
Log file doesn't show any thing, after it crush, I will even double check that for you.
But dmesg shows this:

cdc_acm 4-2:1.1: ttyACM0: USB ACM device

After I restarted the server it works and i get following message from "gnokii --identify"
[root@monitor ~]# gnokii --identify
GNOKII Version 0.6.19
IMEI         : 352042021632084
Manufacturer : Nokia
Model        : Nokia 6300
Product name : Nokia 6300
Revision     : V 05.50

After an hour it will crash and the message mentioned earlier appear.

Gnokii Setting:
#port = /dev/ttyS0
port = /dev/ttyACM0
model = AT
initlength = default
connection = serial
use_locking = no
serial_baudrate = 19200
smsc_timeout = 10
allow_breakage = 0
bindir = /usr/local/sbin/
TELEPHONE = 12345678
debug = off
rlpdebug = off
xdebug = off

The version I am using is:
Linux is: RHEL5.7
Gnokii Version: GNOKII Version 0.6.19
LVL 35

Assisted Solution

by:Duncan Roe
Duncan Roe earned 1336 total points
ID: 38846087
Note you are using /dev/ttyACM0 rather than /dev/ttyS0. This USB serial port may disappear if the USB connection is broken at which point it can be difficult for an application to unlock it.
You really need to increase logging so you can see what the USB device does. You could start by turning it on in your config above.
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Author Comment

ID: 38878985
can you please explain to me what I need to do, I didn't understand:

You really need to increase logging so you can see what the USB device does. You could start by turning it on in your config above.
LVL 35

Accepted Solution

Duncan Roe earned 1336 total points
ID: 38879302
In your Gnokii Setting you have debug = off and I was suggesting you change that to debug = on.
Do you have the file /etc/syslog.conf? If you do, I strongly recommend you add the following lines to it
# Everything is logged here.
*.debug                                         -/var/log/debug

Open in new window

Remove any existing lines referring to /var/log/debug. After you do that, and issue the command pkill -HUP syslogd to get the file re-read, you will see in all USB connect and disconnect activity in /var/log/debug.
If you don't have /etc/syslog.conf then your system uses some other logging program which I can't help you with. Hopefully you can work out what to do.

Author Comment

ID: 38960936
I've requested that this question be closed as follows:

Accepted answer: 0 points for uknet80's comment #a38878985
Assisted answer: 167 points for un1x86's comment #a38833909
Assisted answer: 167 points for duncan_roe's comment #a38846087
Assisted answer: 166 points for duncan_roe's comment #a38879302

for the following reason:

thanks for your continues supports

Author Closing Comment

ID: 38960937
thanks for your support.

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