Status of bug #1024 (periodic signal lost and re-registration)

Sebastian Reichel elektranox at gmail.com
Mon Dec 22 22:14:25 CET 2008


Hi,

Since I saw a lot of "Registered to:" in zhone recently I had a look
in .xsession-errors and saw quite a lot "network status changed"
messages produced by zhone. Running Distro is current Debian.

So I wrote a small fso script [1] which logs connection status. I
will include the log for the last 3 hours, my Freerunner was on my
desk the whole time:

[18:22:53] code: 26201 cid: DEA8 lac: 430D strength: 79
[18:37:23] code: 26201 cid: 9DF7 lac: 430D strength: 81
[18:45:34] code: 26201 cid: DEA8 lac: 430D strength: 81
[18:53:54] unregistered!
[18:53:57] code: 26201 cid: DEA8 lac: 430D
[18:54:25] unregistered!
[18:54:27] code: 26201 cid: DEA8 lac: 430D
[18:54:56] unregistered!
[18:54:59] code: 26201 cid: DEA8 lac: 430D
[18:55:30] unregistered!
[18:55:33] code: 26201 cid: DEA8 lac: 430D
[18:56:00] unregistered!
[18:56:02] code: 26201 cid: DEA8 lac: 430D
[18:56:31] unregistered!
[18:56:33] code: 26201 cid: DEA8 lac: 430D
[19:43:13] code: 26201 cid: 9DF7 lac: 430D strength: 81
[19:45:10] code: 26201 cid: DEA8 lac: 430D strength: 81
[19:57:18] unregistered!
[19:57:20] code: 26201 cid: DEA8 lac: 430D
[19:57:54] unregistered!
[19:57:56] code: 26201 cid: DEA8 lac: 430D
[19:58:26] unregistered!
[19:58:28] code: 26201 cid: DEA8 lac: 430D
[19:58:59] unregistered!
[19:59:01] code: 26201 cid: DEA8 lac: 430D
[19:59:37] unregistered!
[19:59:40] code: 26201 cid: DEA8 lac: 430D
[20:00:11] unregistered!
[20:00:13] code: 26201 cid: DEA8 lac: 430D
[20:15:18] code: 26201 cid: 3385 lac: 430D strength: 77
[20:27:04] code: 26201 cid: DEA8 lac: 430D strength: 77
[21:00:39] unregistered!
[21:00:41] code: 26201 cid: DEA8 lac: 430D
[21:01:07] unregistered!
[21:01:09] code: 26201 cid: DEA8 lac: 430D
[21:01:34] unregistered!
[21:01:36] code: 26201 cid: DEA8 lac: 430D
[21:02:10] unregistered!
[21:02:12] code: 26201 cid: DEA8 lac: 430D
[21:02:39] unregistered!
[21:02:40] code: 26201 cid: DEA8 lac: 430D
[21:03:43] code: 26201 cid: 9DF7 lac: 430D strength: 83
[21:04:09] code: 26201 cid: DEA8 lac: 430D strength: 83
[21:04:34] unregistered!
[21:04:37] code: 26201 cid: DEA8 lac: 430D

As you can see the switching from one network to another happens
without disconnecting. Apart from that there are approximately six
disconnects in a very short timespan each hour.

I will bring this device with me to 25C3, so you can have a look at
it there. Assuming, that it happens in Berlin, too ;)

P.S.: Can somebody @25C3 install the Buzz-Fix [2] on my Freerunner?

[1] http://www.informatik.uni-oldenburg.de/~sebi/debian/gsm-status.py
[2] http://people.openmoko.org/joerg/GSM_EMI_noise/big-C_rework_SOP__DRAFT3__.pdf

-- Sebastian Reichel
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