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Old 07-18-2008, 02:08 PM
Rick Bilonick
 
Default NetworkManagerDispatcher Has Disappearred and so has wireless connection

I've been using F8 on my "main" laptop since January and have F8 running
on a total of 4 systems (2 of them laptops). F8 is up to date on the
"main" laptop and I just accessed my home network (WEP) and office
network (WPA) on Wednesday. NM has been working OK since I installed F8.
Starting yesterday, I cannot connect to either network. I've noticed
that NetworkManagerDispatcher (usually visible under services) is gone
(NetworkManager is still there). I'm also getting an SELinux warning
message about NetworkManager (never had one before). When I do:

[root@localhost ~]# iwlist wlan0 scan
wlan0 No scan results

as root, it says "No scan results" even though there are a bunch of
networks available. This used to work and show me what networks are
available. The other laptop has not been updated in a couple of weeks
BUT NM etc. all work fine - I have no problem connecting to the networks
using it.

I'm using the "main" laptop now but I'm connected via a wired ethernet
connection.

[root@localhost ~]# uname -r

"yum info NetworkManager" shows:

2.6.25.10-47.fc8
Name : NetworkManager
Arch : i386
Epoch : 1
Version: 0.7.0
Release: 0.6.9.svn3675.fc8
Size : 2.6 M
Repo : installed
Summary: Network connection manager and user applications

[root@localhost ~]# modprobe -l | grep ndis
/lib/modules/2.6.25.10-47.fc8/extra/ndiswrapper/ndiswrapper.ko
/lib/modules/2.6.25.10-47.fc8/kernel/drivers/net/wireless/rndis_wlan.ko
/lib/modules/2.6.25.10-47.fc8/kernel/drivers/net/usb/rndis_host.ko

I'm using a BCM4318 (it's been working OK for 3 years). It shows up as
usual in the network config gui.

[root@localhost ~]# dmesg | grep 4318
hpet0: 3 64-bit timers, 14318180 Hz
wlan0: ethernet device 00:14:a5:09:f5:28 using NDIS driver: bcmwl5,
version: 0x3642e00, NDIS version: 0x501, vendor: 'NDIS Network Adapter',
14E4:4318.5.conf

[root@localhost ~]# dmesg | grep ndis
ndiswrapper version 1.53 loaded (smp=yes, preempt=no)
ndiswrapper: driver bcmwl5 (Broadcom,12/22/2004, 3.100.46.0) loaded
ndiswrapper: using IRQ 19
usbcore: registered new interface driver ndiswrapper

[root@localhost ~]# ifconfig wlan0
wlan0 Link encap:Ethernet HWaddr 00:14:A5:09:F5:28
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
Interrupt:19 Memory:dfdfe000-dfe00000


Any ideas on what has gone wrong? I'm stumped.

Rick B.

P.S. Here is the SELinux info

Summary:

SELinux is preventing NetworkManager (NetworkManager_t) "setsched" to
<Unknown>
(NetworkManager_t).

Detailed Description:

SELinux denied access requested by NetworkManager. It is not expected
that this
access is required by NetworkManager and this access may signal an
intrusion
attempt. It is also possible that the specific version or configuration
of the
application is causing it to require additional access.

Allowing Access:

You can generate a local policy module to allow this access - see FAQ
(http://fedora.redhat.com/docs/selinux-faq-fc5/#id2961385) Or you can
disable
SELinux protection altogether. Disabling SELinux protection is not
recommended.
Please file a bug report
(http://bugzilla.redhat.com/bugzilla/enter_bug.cgi)
against this package.

Additional Information:

Source Context system_u:system_r:NetworkManager_t:s0
Target Context system_u:system_r:NetworkManager_t:s0
Target Objects None [ process ]
Source NetworkManager
Source Path /usr/sbin/NetworkManager
Port <Unknown>
Host (I deleted this)
Source RPM Packages NetworkManager-0.7.0-0.6.9.svn3675.fc8
Target RPM Packages
Policy RPM selinux-policy-3.0.8-109.fc8
Selinux Enabled True
Policy Type targeted
MLS Enabled True
Enforcing Mode Enforcing
Plugin Name catchall
Host Name (I deleted this)
Platform Linux eei243.eei.upmc.edu 2.6.25.10-47.fc8
#1 SMP
Mon Jul 7 18:39:51 EDT 2008 i686 i686
Alert Count 9
First Seen Thu 10 Jul 2008 08:12:44 AM EDT
Last Seen Fri 18 Jul 2008 09:00:29 AM EDT
Local ID 3191f79b-d63f-42c9-bd82-6e838bd18a7d
Line Numbers

Raw Audit Messages

host=(I deleted this) type=AVC msg=audit(1216386029.511:24): avc:
denied { setsched } for pid=2591 comm="NetworkManager"
scontext=system_u:system_r:NetworkManager_t:s0
tcontext=system_u:system_r:NetworkManager_t:s0 tclass=process

host=(I deleted this) type=SYSCALL msg=audit(1216386029.511:24):
arch=40000003 syscall=156 success=no exit=-13 a0=a1f a1=0 a2=bf970614
a3=b7f506c0 items=0 ppid=1 pid=2591 auid=4294967295 uid=0 gid=0 euid=0
suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295
comm="NetworkManager" exe="/usr/sbin/NetworkManager"
subj=system_u:system_r:NetworkManager_t:s0 key=(null)






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