Re: ZTE modem problems and workrounds

[Alexander Sack <asac ubuntu com>]

On Fri, Jul 03, 2009 at 04:19:30PM +0100, Rick Jones wrote:
> Good and bad news ...
> 
> The fix was already picked up on launchpad, so I installed the new build. It
> always picks up the correct port - good - but something's broken when trying to
> make a connection.

I see a (most likely the same) regression with yesterdays 0.7 branch
builds for my option card; ppp hangs up quickly like this:

Jul  3 17:26:02 tinya NetworkManager: <debug> [1246634762.206708]
nm_ppp_manager_start(): Command line: /usr/sbin/pppd nodetach lock
nodefaultroute user vodafone ttyUSB0 noipdefault noauth usepeerdns
lcp-echo-failure 0 lcp-echo-interval 0 ipparam
/org/freedesktop/NetworkManager/PPP/1 plugin
/usr/lib/pppd/2.4.4/nm-pppd-plugin.so 
Jul  3 17:26:02 tinya NetworkManager: <debug> [1246634762.229701]
nm_ppp_manager_start(): ppp started with pid 6609 
Jul  3 17:26:02 tinya NetworkManager: <info>  Activation (ttyUSB0)
Stage 2 of 5 (Device Configure) complete. 
Jul  3 17:26:02 tinya pppd[6609]: Plugin
/usr/lib/pppd/2.4.4/nm-pppd-plugin.so loaded.
Jul  3 17:26:02 tinya pppd[6609]: pppd 2.4.5 started by root, uid 0
Jul  3 17:26:02 tinya pppd[6609]: using channel 2
Jul  3 17:26:02 tinya pppd[6609]: Using interface ppp0
Jul  3 17:26:02 tinya pppd[6609]: Connect: ppp0 <--> /dev/ttyUSB0
Jul  3 17:26:02 tinya pppd[6609]: sent [LCP ConfReq id=0x1 <asyncmap
0x0> <magic 0x732ab561> <pcomp> <accomp>]
Jul  3 17:26:02 tinya pppd[6609]: rcvd [LCP ConfReq id=0x0 <asyncmap
0x0> <auth chap MD5> <magic 0x19f4023> <pcomp> <accomp>]
Jul  3 17:26:02 tinya pppd[6609]: sent [LCP ConfAck id=0x0 <asyncmap
0x0> <auth chap MD5> <magic 0x19f4023> <pcomp> <accomp>]
Jul  3 17:26:02 tinya pppd[6609]: rcvd [LCP ConfAck id=0x1 <asyncmap
0x0> <magic 0x732ab561> <pcomp> <accomp>]
Jul  3 17:26:02 tinya NetworkManager: <info>  (ttyUSB0): device state
change: 5 -> 6 (reason 0) 
Jul  3 17:26:02 tinya pppd[6609]: Terminating on signal 15
Jul  3 17:26:02 tinya pppd[6609]: sent [LCP TermReq id=0x2 "User
request"]
Jul  3 17:26:02 tinya NetworkManager: <debug> [1246634762.390449]
nm_serial_device_close(): Closing device 'ttyUSB0' 
Jul  3 17:26:02 tinya pppd[6609]: rcvd [LCP DiscReq id=0x1
magic=0x19f4023]
Jul  3 17:26:02 tinya pppd[6609]: rcvd [CHAP Challenge id=0x1
<0c210500d69abc500281598e50f32496>, name = "UMTS_CHAP_SRVR"]
Jul  3 17:26:02 tinya pppd[6609]: Discarded non-LCP packet when LCP
not open
Jul  3 17:26:02 tinya pppd[6609]: rcvd [LCP TermAck id=0x2]
Jul  3 17:26:02 tinya pppd[6609]: Connection terminated.
Jul  3 17:26:03 tinya pppd[6609]: Exit.


I looked for a minute, but couldnt see an obvious commit that would
cause this. Dan any idea?

 - Alexander