HuaWei E1750 can't work on ubuntu9.04

[代尔欣 <daierxin gmail com>]

Hi all,
       I have a HuaWei E1750 usb modem. After install usb-modeswitch on ubuntu9.04, NM can find the modem. But I can't connect through NM. From the log, the AT command part is ok. PPP is failed. Below is the log:

Starting pppd connection
<debug> [1266659846.424260] nm_ppp_manager_start(): Command line: /usr/sbin/pppd nodetach lock nodefaultroute ttyUSB0 noipdefault noauth usepeerdns lcp-echo-failure 0 lcp-echo-interval 0 ipparam /org/freedesktop/NetworkManager/PPP/2 plugin /usr/lib/pppd/2.4.4/nm-pppd-plugin.so
NetworkManager: <debug> [1266659846.434225] nm_ppp_manager_start(): ppp started with pid 9348
NetworkManager: <info>  Activation (ttyUSB0) Stage 2 of 5 (Device Configure) complete.
NetworkManager: <WARN>  pppd_timed_out(): Looks like pppd didn't initialize our dbus module
NetworkManager: <info>  (ttyUSB0): device state change: 5 -> 9
NetworkManager: <debug> [1266659862.012800] nm_serial_device_close(): Closing device 'ttyUSB0'

check the /usr/lib/pppd folder, I found 2 folders, 2.4.4 and 2.4.5. The nm-pppd-plugin.so md5 is same in both folders. pppd version is 2.4.5 in ubuntu9.04. But NM use /usr/lib/pppd/2.4.4/nm-pppd-plugin.so.  It seems this is why the connection fail. Any quick solution to resolve this except recomplie the NM codes?

The pppd is ok, I can connect with below commands without NM:

pppd ttyUSB0 nodetach defaultroute noipdefault lock usepeerdns connect 'chat "" "at" "" "at" "OK" "at&f" "OK" "atz" "OK" "at+cgdcont=1,'IP','3gnet'" OK "atdt*99***1#" CONNECT' user gprs

Thanks!
DEX