I have exactly the same behaviour with my totally fresh install of opensuse 11.3. I was running the same laptop, with opensuse 11.1 with kde4.4.4 and networkmanager managing the network.
After a few minutes the connection get lost.
I have noticed some weird things, the connexion is done well and quick (a few seconds) if I look to the speed before it connects it shows me a nice 54mbps, but once the connexion is established the speed falls to 2mbps !
the iwconfig shows this :
lo no wireless extensions.
eth0 no wireless extensions.
wlan0 IEEE 802.11abgn ESSID:“tagada”
Mode:Managed Frequency:2.412 GHz Access Point: 00:18:F6:72:3E:00
Bit Rate=1 Mb/s Tx-Power=15 dBm
Retry long limit:7 RTS thr : off Fragment thr : off
Encryption key : off
Power Management : off
Link Quality=70/70 Signal level=-36 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
pan0 no wireless extensions.
/etc/resolv.conf file autogenerated by netconfig!
Before you change this file manually, consider to define the
static DNS configuration using the following variables in the
or disable DNS configuration updates via netconfig by setting:
See also the netconfig(8) manual page and other documentation.
Note: Manual change of this file disables netconfig too, but
may get lost when this file contains comments or empty lines
only, the netconfig settings are same with settings in this
file and in case of a “netconfig update -f” call.
Please remove (at least) this line when you modify the file!
I have copied the .ked4/share/config/networkmanagementrc and .ked4/share/apps/networkmanagement/config/* from my old disk (to ensure that was not a problem from kde in the new install. The behaviour is the same.
route shoes :
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.1.0 * 255.255.255.0 U 2 0 0 wlan0
loopback * 255.0.0.0 U 0 0 0 lo
default gw.tagada.home 0.0.0.0 UG 0 0 0 wlan0
To restart the connexion I just have to click on the connexion icon. It takes 3 seconds to reconfigure, works for some minutes (sometimes 30seconds sometimes more than half an hour) and fails, ifconfig shows me a valid config :
wlan0 Link encap:Ethernet HWaddr 00:13:E8:8C:61:E1
inet addr:192.168.1.66 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:22823 errors:0 dropped:0 overruns:0 frame:0
TX packets:18781 errors:0 dropped:0 overruns:0 carrier:0
RX bytes:25586068 (24.4 Mb) TX bytes:3403974 (3.2 Mb)
ethtool -i wlan0
I am a bit lost there… as nothing (except opensuse version) has changed… and the knetworkmanager applet tells me that the connexion is fine, the distance to the access point is less than 2 meters, I have restarted (in the case of), and my son who is using the same access point with openSuse 11.2 but kde4.3.5 has no problem as well as my daughters and my wife (everbody runs opensuse 11.2), and even the multimedia box. they are all connected to the same AP…