#76 Could not write to device (anymore?)

[wolfi]

After successful installation and testing, the next day (= after reboot) umtsmon does not work anymore.
On the commandline (umtsmon -v5) they asked me to post this output in a new bug report. Well, that's what I'm doing now ;-)
System is openSUSE 10.3 using a 2.6.22 kernel. The UMTS device is a Huawei E220 using base.de (Germany).

[wolfi]

output from command line

[wolfi]

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Originally I had installed umtsmon-0.7.91.20080212-1.1.i586.rpm
As reported earlier, this worked 'only once'.
Now I downloaded and installed umtsmon-0.7.91.20080212-3.1.i586.rpm - I am back online with no problems. Will check if it still works after reboot ...

[wolfi]

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Next retry ...
It didn't work once, so I reinstalled the umtsmon package (this time the same version, using --force), after the next reboot it's working again. BTW I got all the necessary groups, at least I think so ;-)

wolfi@linux-y89x:~> groups
users tty disk uucp dialout video

[wolfi]

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After some days on 0.7.92 the problem has not reoccured yet .. (knock on wood)

[Nobody/Anonymous]

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Got a similar problem and the following output:
"root# umtsmon -v5
umtsmon version 0.7 .
##P2 t=222: set verbosity level to 5
installing text SIGABRT handler
##P5 t=222: TheDeviceManagerSingleton::TheDeviceManagerSingleton()
##P3 t=222: TheDeviceManagerSingleton::setupDevice(void)
##P3 t=222: TheDeviceManagerSingleton::readFromConfigFile()
##P5 t=222: TheSettingsSingleton::TheSettingsSingleton()
##P2 t=222: Settings will be saved in : '/root/.umtsmon'
##P3 t=222: Start iterating through all AutoDetectors

##P3 t=222: AutoDetectBase::go() for 'Device creation from supplied parameters'
##P3 t=222: AutoDetectBase::createDevice() for Device 5e21a700
##P3 t=222: Device creation for type 0x5e21a700 requested
umtsmon: src/controller/AutoDetect.cpp:44: virtual Device* AutoDetectBase::createDevice(): Assertion `!theATSerialPortName
.isNull()' failed.

*** umtsmon version 0.7 closed due to an unrecoverable program error.
*** Please e-mail all of the above output to umtsmon-develop@lists.sourceforge.net,
*** Or go to the umtsmon website and file a bug.

Aborted"

I realized that there is no '/root/.umtsmon'.

Currently it is working fine again.

[wolfi]

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It still occurs from time to time. Running 0.8 now.
What I am doing now: When this happens, I check all plug connections between machine and UMTS modem. There is the laptop, then a 3 meter long cable (it allows me to put the modem closer to the window for better strength of field), then a short connection cable and then there is the modem. So there are three connections which might have intermitting contact.
Then I kill the umtsmon process, if there is one running, and retry. Sometimes I have to reboot, but normally this treatment appears to be working.

Could this output just mean that there is trouble concerning the wired connection to the modem? Had such problems with Windows too, but the statement was clearer - so stupid me could understand it.
It said 'wireless device does not exist or is unavailable'.

[wolfi]

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I found out one more thing which might be related to the problem:

UMTSmon doesn't work and shows the error mentioned above
-> I plugged the modem only during boot time and I see only one /dev/ttyUSB0
-> When I unplug the modem, /dev/ttyUSB0 vanishes. When I replug, then there is, once again, only this very entry /dev/ttyUSB0

After reboot it does work (modem was already plugged in before boot now) and I got three entries:
/dev/ttyUSB0, /dev/ttyUSB1 and /dev/ttyUSB2

[Klaas van Gend]

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Hi wolfi_z, I now own a Huawei E220, and I think I solved your problems.
Please try the current CVS version.

[wolfi]

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Hi kvangend,

Will check it asap.
My old laptop will be sent to trash now so I'll most likely do this with the new one which I should receive after my holyday (mid-July).

[wolfi]

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Got 0.8.90 now from openSUSE 11.0 on the previously mentioned new machine.
Apparently it is now OK.
Even if modem is hotplugged I get two devices (/dev/ttyUSB0 and -1) and connecting to the internet does work.
I'll check if it remains that way.

[Klaas van Gend]

closing.