NetworkManager crashed with SIGSEGV in g_type_instance_get_private()

[Le Sy Tung]

NM has been unable to recognize my wireless driver. Although this driver was marked as installed and being worked. I checked the wireless signal via Windows, it works like a charm. But in Ubuntu 11.10 beta 1, no wireless signal appears!
Tried to install wicd as suggested somewhere but failed.

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: network-manager 0.9.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-9.15-generic 3.0.3
Uname: Linux 3.0.0-9-generic i686
NonfreeKernelModules: wl
Architecture: i386
CRDA: Error: [Errno 2] No such file or directory
Date: Fri Sep 2 22:34:28 2011
ExecutablePath: /usr/sbin/NetworkManager
Gconf:

IfupdownConfig:
 auto lo
 iface lo inet loopback
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Beta i386 (20110901)
IpRoute:
 default via 192.168.1.1 dev eth0 proto static
 169.254.0.0/16 dev eth0 scope link metric 1000
 192.168.1.0/24 dev eth0 proto kernel scope link src 192.168.1.5
IwConfig:
 lo no wireless extensions.

 eth0 no wireless extensions.
Keyfiles: Error: [Errno 2] No such file or directory
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=true
 WWANEnabled=true
 WimaxEnabled=true
ProcCmdline: NetworkManager
ProcEnviron: PATH=(custom, no user)
RfKill:
 0: dell-wifi: Wireless LAN
  Soft blocked: no
  Hard blocked: no
SegvAnalysis:
 Segfault happened at: 0x9ea6f2 <g_type_instance_get_private+34>: mov (%edx),%ecx
 PC (0x009ea6f2) ok
 source "(%edx)" (0xaaaaaaaa) not located in a known VMA region (needed readable region)!
 destination "%ecx" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: network-manager
StacktraceTop:
 g_type_instance_get_private () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
 nm_agent_manager_save_secrets (self=0xaaaaaaaa, connection=0x0, filter_by_uid=1, uid_filter=1000) at nm-agent-manager.c:1220
 update_auth_cb (self=0x8efc4b0, context=0xb6e006f8, sender_uid=1000, error=0x0, data=0x8f29c60) at nm-settings-connection.c:1185
 pk_auth_cb (chain=0xb6e01e20, chain_error=0x0, context=0xb6e006f8, user_data=0x8efc4b0) at nm-settings-connection.c:916
 nm_auth_chain_check_done (self=0xb6e01e20) at nm-manager-auth.c:274
Title: NetworkManager crashed with SIGSEGV in g_type_instance_get_private()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

mtime.conffile..etc.NetworkManager.NetworkManager.conf: 2011-09-02T22:34:27.906447

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make Ubuntu better. This particular crash has already been reported and is a duplicate of bug #797868, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.