Getting pppd options right for huawei k3520

[Tae_kyon]

Hallo all.

I have a Huawei K3520 broadband connect USB dongle. It magically worked out of the box with Ubuntu 8 32 bit; not with following versions of Ubuntu, nor with Gentoo.

Windows options are:
Profile name="Myprofile" type="3G/GPRS" readonly="false" device="" user="myuser" password="mypassword" phonenumber="*99#" autoapn="true" apn="" chap="true" pap="false" ip="" dns="" dnsalt="" wins="" winsalt="" imsi="" langid=""

No matter whether I use umtsmon, wvdial or kppp, with Gentoo the pppd connection hangs at the end - actually once, and only once, it connected for a few seconds.

Opened '/dev/ttyUSB0' as FD 8
PPPConnection::chat() start
Query sends the following mesage: 'AT&F'
answer 1:'AT&F'
answer 2:'OK'
Query sends the following mesage: 'ATE1'
answer 1:'ATE1'
answer 2:'OK'
Query sends the following mesage: 'AT+CGDCONT=1,"IP","whatever.it.is"'
answer 1:'AT+CGDCONT=1,"IP","whatever.it.is"'
answer 2:'OK'
Query sends the following mesage: 'ATD*99***1#'
answer 1:'ATD*99***1#'
answer 2:'CONNECT'
PPPConnection::chat() end
Assembled PPP string is: 'idle 7200 asyncmap 0 updetach dump debug debug debug 460800 lock crtscts modem /dev/ttyUSB0 noipx novj noccp defaultroute usepeerdns user myuser password mypassword '

Obviously it is a pppd problem, not a hardware one .... please - how should I tweak my pppd options?
_________________
We shall not cease from exploration. And the end of all our exploring
will be to arrive where we started and know the place for the first time

[Tae_kyon]

Some more output if it can help:

*****output of PPP to stdout
* pppd options in effect:
* debug debug debug # (from command line)
* updetach # (from command line)
* idle 7200 # (from command line)
* dump # (from command line)
* user clic # (from command line)
* password ?????? # (from command line)
* /dev/ttyUSB0 # (from command line)
* 460800 # (from command line)
* lock # (from command line)
* crtscts # (from command line)
* modem # (from command line)
* asyncmap 0 # (from command line)
* novj # (from command line)
* noipx # (from command line)
* using channel 6
* Using interface ppp0
* Connect: ppp0 <--> /dev/ttyUSB0
* sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xc9b19fbb> <pcomp> <accomp>]
* rcvd [LCP ConfReq id=0xc <asyncmap 0x0> <auth chap MD5> <magic 0x10236f9> <pcomp> <accomp>]
* sent [LCP ConfAck id=0xc <asyncmap 0x0> <auth chap MD5> <magic 0x10236f9> <pcomp> <accomp>]
* rcvd [LCP ConfAck id=0x1 <asyncmap 0x0> <magic 0xc9b19fbb> <pcomp> <accomp>]
* rcvd [LCP DiscReq id=0xd magic=0x10236f9]
* rcvd [CHAP Challenge id=0x1 <2437d0349237d451367c8c43dedf2ebc>, name = "UMTS_CHAP_SRVR"]
* sent [CHAP Response id=0x1 <befbc2864d8f3bca9e1abf8df74f0060>, name = "Myusername"]
* rcvd [CHAP Challenge id=0x2 <56c86ba9fedc2de3361c08d8068c74fc>, name = "UMTS_CHAP_SRVR"]
* sent [CHAP Response id=0x2 <e00e6b61da06dad6663033c6f047f749>, name = "Mypasswd"]
* rcvd [CHAP Success id=0x2 ""]
* CHAP authentication succeeded
* CHAP authentication succeeded
* sent [CCP ConfReq id=0x1 <deflate 15> <deflate(old#) 15> <bsd v1 15>]
* sent [IPCP ConfReq id=0x1 <addr 0.0.0.0>]
* rcvd [LCP ProtRej id=0xe 80 fd 01 01 00 0f 1a 04 78 00 18 04 78 00 15 03 2f]
* Protocol-Reject for 'Compression Control Protocol' (0x80fd) received
* Hangup (SIGHUP)
* Modem hangup
* Connection terminated.
*****end-of-output
*****output of PPP to stderr
*****end-of-output

*****output of PPP to stdout
* pppd options in effect:
* debug debug debug # (from command line)
* updetach # (from command line)
* idle 7200 # (from command line)
* dump # (from command line)
* user clic # (from command line)
* password ?????? # (from command line)
* /dev/ttyUSB0 # (from command line)
* 460800 # (from command line)
* lock # (from command line)
* crtscts # (from command line)
* modem # (from command line)
* asyncmap 0 # (from command line)
* novj # (from command line)
* noipx # (from command line)
* using channel 10
* Using interface ppp0
* Connect: ppp0 <--> /dev/ttyUSB0
* sent
[LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0x4909ef4d> <pcomp> <accomp>]
* rcvd [LCP ConfReq id=0x6 <asyncmap 0x0> <auth chap MD5> <magic 0xe27265> <pcomp> <accomp>]
* sent [LCP ConfAck id=0x6 <asyncmap 0x0> <auth chap MD5> <magic 0xe27265> <pcomp> <accomp>]
* rcvd [LCP ConfAck id=0x1 <asyncmap 0x0> <magic 0x4909ef4d> <pcomp> <accomp>]
* rcvd [LCP DiscReq id=0x7 magic=0xe27265]
* rcvd [CHAP Challenge id=0x1 <32f4f4022200cc1f7cc81c8aba8bae67>, name = "UMTS_CHAP_SRVR"]
* sent [CHAP Response id=0x1 <d200b063899c037e0998f68f19142d84>, name = "clic"]
* rcvd [CHAP Challenge id=0x2 <829557f4200719a20419231980623f4f>, name = "UMTS_CHAP_SRVR"]
* sent [CHAP Response id=0x2 <09ed20973040515090a3c2f367087302>, name = "clic"]
* rcvd [CHAP Success id=0x2 ""]
* CHAP authentication succeeded
* CHAP authentication succeeded
* sent [CCP ConfReq id=0x1 <deflate 15> <deflate(old#) 15> <bsd v1 15>]
* sent [IPCP ConfReq id=0x1 <addr 0.0.0.0>]
* rcvd [LCP ProtRej id=0x8 80 fd 01 01 00 0f 1a 04 78 00 18 04 78 00 15 03 2f]
* Protocol-Reject for 'Compression Control Protocol' (0x80fd) received
* rcvd [IPCP ConfNak id=0x1 <ms-dns1 10.11.12.13> <ms-dns3 10.11.12.14> <ms-wins 10.11.12.13> <ms-wins 10.11.12.14>]
* sent [IPCP ConfReq id=0x2 <addr 0.0.0.0>]
* Hangup (SIGHUP)
* Modem hangup
* Connection terminated.
*****end-of-output
*****output of PPP to stderr
*****end-of-output
_________________
We shall not cease from exploration. And the end of all our exploring
will be to arrive where we started and know the place for the first time

[Tae_kyon]

Here is kppp output ...

ATZ
OK
ATM1L1
OK
ATX3
OK
ATDT*99#
CONNECT 7200000


The pppd demon died unexpectedly!
Exit status 16
_________________
We shall not cease from exploration. And the end of all our exploring
will be to arrive where we started and know the place for the first time

[imensen]

howdy.
i removed updetach option, that worked for me and my modem did not hangup anymore.
don't know why, but I'm okay with that. perhaps I'll investigate that, if I have plenty of time.
cya
--
ie, i fetched umtsmon source, threw updetach away and compiled myself