Network Manager drops wireless connections

[Chris Jones <jonesc hep phy cam ac uk>]

Hi,

I've been using networkmanager for a while now, and in general have found it
to work well. However, recently it seems to have developed a problem. When
running a wireless connection it drops the connection every now and then. I
can sometimes reconnect by just clicking on the desired network again, but
sometimes I have to restart NetworkManager itself.

System :- Fedora Core 4, fully updated
NM 0.5.1
kernel 2.6.14-1.1656_FC4
wireless is ipw2100 (1.1.0 built into kernel)

The contents of messages, related to NetworkManager are pasted below.

Does anyone else get this ? Could it be related to the firmware I am using,
which was updated a short time ago ? - I am using the freshrpms rpm package
ipw2100-firmware (1.3-2). Could it instead be related to my wireless router 
(although nothing has changed there) ?

thanks in advance

Chris

/var/log/message
Jan 16 18:05:13 localhost dhcdbd: Started up.
Jan 16 18:05:14 localhost dhcdbd: message_handler: message handler not found
under /com/redhat/dhcp/eth1 for sub-path eth1.dbus.get.reason
Jan 16 18:05:18 localhost dhclient: Internet Systems Consortium DHCP Client
V3.0.2-RedHat
Jan 16 18:05:18 localhost dhclient: Copyright 2004 Internet Systems
Consortium.
Jan 16 18:05:18 localhost dhclient: All rights reserved.
Jan 16 18:05:18 localhost dhclient: For info, please visit
http://www.isc.org/products/DHCP
Jan 16 18:05:18 localhost dhclient:
Jan 16 18:05:18 localhost dhclient: Listening on LPF/eth1/00:04:23:8b:7c:60
Jan 16 18:05:18 localhost dhclient: Sending on   LPF/eth1/00:04:23:8b:7c:60
Jan 16 18:05:18 localhost dhclient: Sending on   Socket/fallback
Jan 16 18:05:18 localhost dhclient: DHCPREQUEST on eth1 to 255.255.255.255
port 67
Jan 16 18:05:19 localhost dhclient: DHCPNAK from 192.168.1.1
Jan 16 18:05:19 localhost dhclient: DHCPDISCOVER on eth1 to 255.255.255.255
port 67 interval 8
Jan 16 18:05:20 localhost dhclient: DHCPOFFER from 192.168.1.1
Jan 16 18:05:20 localhost dhclient: DHCPREQUEST on eth1 to 255.255.255.255
port 67
Jan 16 18:05:20 localhost dhclient: DHCPACK from 192.168.1.1
Jan 16 18:05:20 localhost dhcdbd: message_handler: message handler not found
under /com/redhat/dhcp/eth1 for sub-path eth1.dbus.get.domain_name
Jan 16 18:05:20 localhost NetworkManager: <WARNING>	  (): get_ip4_string():
error calling 'domain_name', DHCP daemon returned error
'org.freedesktop.DBus.Error.UnknownMethod', message 'Method "domain_name"
with signature "" on interface "com.redhat.dhcp.dbus.get" doesn't exist '.
Jan 16 18:05:20 localhost dhclient: bound to 192.168.1.100 -- renewal in
 76403 seconds.
Jan 16 18:05:48 localhost NetworkManager: process_scan_results: assertion
`res_buf_len > 0' failed
Jan 16 18:05:48 localhost NetworkManager: <WARNING>	  ():
nm_device_wireless_process_scan_results(eth1): process_scan_results()
returned an error.
Jan 16 18:06:09 localhost NetworkManager: process_scan_results: assertion
`res_buf_len > 0' failed
Jan 16 18:06:09 localhost NetworkManager: <WARNING>	  ():
nm_device_wireless_process_scan_results(eth1): process_scan_results()
returned an error.
Jan 16 18:08:09 localhost NetworkManager: process_scan_results: assertion
`res_buf_len > 0' failed
Jan 16 18:08:09 localhost NetworkManager: <WARNING>	  ():
nm_device_wireless_process_scan_results(eth1): process_scan_results()
returned an error.
Jan 16 18:12:09 localhost NetworkManager: process_scan_results: assertion
`res_buf_len > 0' failed
Jan 16 18:12:09 localhost NetworkManager: <WARNING>	  ():
nm_device_wireless_process_scan_results(eth1): process_scan_results()
returned an error.
Jan 16 18:14:10 localhost NetworkManager: process_scan_results: assertion
`res_buf_len > 0' failed
Jan 16 18:14:10 localhost NetworkManager: <WARNING>	  ():
nm_device_wireless_process_scan_results(eth1): process_scan_results()
returned an error.
Jan 16 18:18:10 localhost NetworkManager: process_scan_results: assertion
`res_buf_len > 0' failed
Jan 16 18:18:10 localhost NetworkManager: <WARNING>	  ():
nm_device_wireless_process_scan_results(eth1): process_scan_results()
returned an error.
Jan 16 18:20:11 localhost NetworkManager: process_scan_results: assertion
`res_buf_len > 0' failed
Jan 16 18:20:11 localhost NetworkManager: <WARNING>	  ():
nm_device_wireless_process_scan_results(eth1): process_scan_results()
returned an error.
Jan 16 18:24:11 localhost NetworkManager: process_scan_results: assertion
`res_buf_len > 0' failed
Jan 16 18:24:11 localhost NetworkManager: <WARNING>	  ():
nm_device_wireless_process_scan_results(eth1): process_scan_results()
returned an error.
Jan 16 18:26:12 localhost NetworkManager: process_scan_results: assertion
`res_buf_len > 0' failed
Jan 16 18:26:12 localhost NetworkManager: <WARNING>	  ():
nm_device_wireless_process_scan_results(eth1): process_scan_results()
returned an error.
Jan 16 18:28:12 localhost NetworkManager: process_scan_results: assertion
`res_buf_len > 0' failed
Jan 16 18:28:12 localhost NetworkManager: <WARNING>	  ():
nm_device_wireless_process_scan_results(eth1): process_scan_results()
returned an error.
Jan 16 18:30:12 localhost NetworkManager: process_scan_results: assertion
`res_buf_len > 0' failed
Jan 16 18:30:12 localhost NetworkManager: <WARNING>	  ():
nm_device_wireless_process_scan_results(eth1): process_scan_results()
returned an error.
Jan 16 18:32:12 localhost NetworkManager: process_scan_results: assertion
`res_buf_len > 0' failed
Jan 16 18:32:12 localhost NetworkManager: <WARNING>	  ():
nm_device_wireless_process_scan_results(eth1): process_scan_results()
returned an error.
Jan 16 18:34:13 localhost NetworkManager: process_scan_results: assertion
`res_buf_len > 0' failed
Jan 16 18:34:13 localhost NetworkManager: <WARNING>	  ():
nm_device_wireless_process_scan_results(eth1): process_scan_results()
returned an error.
Jan 16 18:36:13 localhost NetworkManager: process_scan_results: assertion
`res_buf_len > 0' failed
Jan 16 18:36:13 localhost NetworkManager: <WARNING>	  ():
nm_device_wireless_process_scan_results(eth1): process_scan_results()
returned an error.
Jan 16 18:38:13 localhost NetworkManager: process_scan_results: assertion
`res_buf_len > 0' failed
Jan 16 18:38:13 localhost NetworkManager: <WARNING>	  ():
nm_device_wireless_process_scan_results(eth1): process_scan_results()
returned an error.
Jan 16 18:40:14 localhost NetworkManager: process_scan_results: assertion
`res_buf_len > 0' failed
Jan 16 18:40:14 localhost NetworkManager: <WARNING>	  ():
nm_device_wireless_process_scan_results(eth1): process_scan_results()
returned an error.
Jan 16 18:44:14 localhost NetworkManager: process_scan_results: assertion
`res_buf_len > 0' failed
Jan 16 18:44:14 localhost NetworkManager: <WARNING>	  ():
nm_device_wireless_process_scan_results(eth1): process_scan_results()
returned an error.
Jan 16 18:46:15 localhost NetworkManager: process_scan_results: assertion
`res_buf_len > 0' failed
Jan 16 18:46:15 localhost NetworkManager: <WARNING>	  ():
nm_device_wireless_process_scan_results(eth1): process_scan_results()
returned an error.
Jan 16 18:48:45 localhost dhclient: Internet Systems Consortium DHCP Client
V3.0.2-RedHat
Jan 16 18:48:45 localhost dhclient: Copyright 2004 Internet Systems
Consortium.
Jan 16 18:48:45 localhost dhclient: All rights reserved.
Jan 16 18:48:45 localhost dhclient: For info, please visit
http://www.isc.org/products/DHCP
Jan 16 18:48:45 localhost dhclient:
Jan 16 18:48:45 localhost dhclient: Listening on LPF/eth1/00:04:23:8b:7c:60
Jan 16 18:48:45 localhost dhclient: Sending on   LPF/eth1/00:04:23:8b:7c:60
Jan 16 18:48:45 localhost dhclient: Sending on   Socket/fallback
Jan 16 18:48:45 localhost dhclient: DHCPRELEASE on eth1 to 192.168.1.1 port
 67 Jan 16 18:48:46 localhost NetworkManager: compute_nameservers: assertion
 `config != NULL' failed

jonesc localhost ~ > dmesg | grep ipw
ipw2100: Intel(R) PRO/Wireless 2100 Network Driver, 1.1.0
ipw2100: Copyright(c) 2003-2004 Intel Corporation
ipw2100: Detected Intel PRO/Wireless 2100 Network Connection

jonesc localhost ~ > dmesg | grep eth1
eth1 (WE) : Driver using old /proc/net/wireless support, please fix driver !
eth1: no IPv6 routers present