no internet with eee pc 901 go - simlock?

I recently bougth the new eee pc 901 go from amazon.
When it arrived, its box had an nasty sticker on it claiming that it only works with t-mobile.
Some quick googleing brought, that this was most definetly an software-only problem.
So I wiped the preinstalled Xandros (would have done it anyway) and installed ubuntu-eee 8.0.4.1.
Everything works fine, except the built in modem.

It is recognised as ttyUSB0 - ttyUSB2.
I built a configuration with pppconfig and tried to fire it on with gcom and pon:

<gcom output>
root@mareeesi:~# gcom -d /dev/ttyUSB0

Enter PIN number: @@@@
Waiting for Registration..(120 sec max)...
Registered on Home network: "23205",2
Signal Quality: 4,99
root@mareeesi:~# pon
</gcom output>

<output /var/log/messages from pon>
Nov 24 17:17:41 mareeesi kernel: [ 435.354136] PPP generic driver version 2.4.2
Nov 24 17:17:41 mareeesi pppd[6258]: pppd 2.4.4 started by root, uid 0
Nov 24 17:17:42 mareeesi chat[6262]: abort on (BUSY)
Nov 24 17:17:42 mareeesi chat[6262]: abort on (NO CARRIER)
Nov 24 17:17:42 mareeesi chat[6262]: abort on (VOICE)
Nov 24 17:17:42 mareeesi chat[6262]: abort on (NO DIALTONE)
Nov 24 17:17:42 mareeesi chat[6262]: abort on (NO DIAL TONE)
Nov 24 17:17:42 mareeesi chat[6262]: abort on (NO ANSWER)
Nov 24 17:17:42 mareeesi chat[6262]: abort on (DELAYED)
Nov 24 17:17:42 mareeesi chat[6262]: send (ATZ^M)
Nov 24 17:17:42 mareeesi chat[6262]: expect (OK)
Nov 24 17:17:42 mareeesi chat[6262]: ATZ^M^M
Nov 24 17:17:42 mareeesi chat[6262]: OK
Nov 24 17:17:42 mareeesi chat[6262]: -- got it
Nov 24 17:17:42 mareeesi chat[6262]: send (ATDP*99#^M)
Nov 24 17:17:42 mareeesi chat[6262]: expect (CONNECT)
Nov 24 17:17:42 mareeesi chat[6262]: ^M
Nov 24 17:17:42 mareeesi chat[6262]: ATDP*99#^M^M
Nov 24 17:17:42 mareeesi chat[6262]: CONNECT
Nov 24 17:17:42 mareeesi chat[6262]: -- got it
Nov 24 17:17:42 mareeesi chat[6262]: send (\d)
Nov 24 17:17:43 mareeesi pppd[6258]: Serial connection established.
Nov 24 17:17:43 mareeesi pppd[6258]: Using interface ppp0
Nov 24 17:17:43 mareeesi pppd[6258]: Connect: ppp0 <--> /dev/ttyUSB0
Nov 24 17:17:44 mareeesi pppd[6258]: PAP authentication succeeded
Nov 24 17:17:44 mareeesi kernel: [ 438.785621] PPP BSD Compression module registered
Nov 24 17:17:45 mareeesi kernel: [ 438.872806] PPP Deflate Compression module registered
Nov 24 17:17:46 mareeesi pppd[6258]: Hangup (SIGHUP)
Nov 24 17:17:46 mareeesi pppd[6258]: Modem hangup
Nov 24 17:17:46 mareeesi pppd[6258]: Connection terminated.
Nov 24 17:17:47 mareeesi pppd[6258]: Exit.
</output /var/log/messages from pon>

It seems that the connection is established but terminates immediatly afterwards.

If I connect an external umts modem using the same procedure (on ttyUSB3), everything works fine!


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