I also have trouble using network manager. I am updated to 9.04. I had apt-get remove'd network-manager a month or two ago, and instead used a terminal window to manual type the wpa-supplicant commands. This almost always works instantly.
The network I'm attaching to is an open-mesh network with 3 nodes (all visible from my laptop usually). When I use wpa-supplicant from the command line, it gets connected in a second or two, then I create another terminal and run the dhclient command to get a network address. Today, I installed network-manager using 'apt-get install network- manager'. This installed the following packages: 2009-07-22 07:29:29 install dnsmasq-base <none> 2.47-3 2009-07-22 07:29:29 install libnm-util1 0.7.1~rc4.1.cf199a964-0ubuntu2 0.7.1~rc4.1.cf199a964-0ubuntu2 2009-07-22 07:29:29 install libnm-glib0 0.7.1~rc4.1.cf199a964-0ubuntu2 0.7.1~rc4.1.cf199a964-0ubuntu2 2009-07-22 07:29:29 install libudev0 <none> 141-1.2 2009-07-22 07:29:29 install network-manager 0.7.1~rc4.1.cf199a964-0ubuntu2 0.7.1~rc4.1.cf199a964-0ubuntu2 2009-07-22 07:29:30 install network-manager-gnome 0.7.1~rc4.1-0ubuntu2 0.7.1~rc4.1-0ubuntu2 After rebooting, I could no longer get connected to the network using the network-manager method. I next removed the network-manager-gnome and network-manager packages and, after rebooting, tried the wpa-supplicant method but it did not work. After a couple of minutes, I located the dpkg.log and removed all of the other packages listed above. I rebooted again, and now wpa- supplicant works to get associated. Additional information System is Sony Vaio laptop vgn-sz470n wifi driver is iwl-3945 There is another symptom, but I have not verified it well enough to report it reliably. It appears that after using the network-manager it has affected something in the hardware, because it (may) be necessary to shut down and remove the laptop battery for a few seconds before booting the system and using the wpa-supplicant command-line method to get the network connected. -- network-manager unreliable with multiple APs https://bugs.launchpad.net/bugs/111502 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs