Is this bug still present in Ubuntu 12.04? ** Summary changed:
- Network manager tries to configure network adapter with garbage essid. + NetworkManager assigns garbage ESSID -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/542226 Title: NetworkManager assigns garbage ESSID Status in “network-manager” package in Ubuntu: New Bug description: Binary package hint: network-manager I have been debugging access point switching in the rt2870sta wifi driver. One of the problems I was encountering is that the essid the adapter was trying to connect to was often garbage. After backtracking through the code, I finally found that the garbage was being passed in by an ioctl. After disabling the network-manager, the garbage stopped being passed in, so I assume that network manager is to blame. I have not much debugging, as I don't really care about network-manager working, but here is my first impression. It appears that the garbage essid only gets sent when I do an 'iwconfig ra0 essid willow' command, and seems to immediately follow that command. At the time when I do this, the network manager has not yet established a connection. I am guessing that the network manager detects that I have made a change, and tries to revert it. The value it tries to revert to is not yet initialized, causing the problem I saw. Another possibility I cannot yet rule out is that the rt2870sta driver is sending a garbage value to the network manager, which is in turn echoing it back to the driver. In that case, I wonder why it is doing the echo. Here is an example log from the wifi driver code: {{{ Mar 19 14:47:01 adr kernel: [1473832.657015] rt2870sta: rt_ioctl_siwessid (6) 'willow' Mar 19 14:47:02 adr kernel: [1473833.192466] rt2870sta: rt_ioctl_siwessid (32) '�Ȗ��\����f<1Z Mar 19 14:47:13 adr kernel: [1473844.528190] rt2870sta: rt_ioctl_siwessid (6) 'willow' Mar 19 14:47:13 adr kernel: [1473844.863786] rt2870sta: rt_ioctl_siwessid (32) '�A~����+�8�"��j���s�� Mar 19 14:47:26 adr kernel: [1473857.657028] rt2870sta: rt_ioctl_siwessid (6) 'willow' Mar 19 14:47:27 adr kernel: [1473858.346822] rt2870sta: rt_ioctl_siwessid (6) 'willow' Mar 19 14:47:31 adr kernel: [1473862.028258] rt2870sta: rt_ioctl_siwessid (6) 'willow' Mar 19 14:47:31 adr kernel: [1473862.658089] rt2870sta: rt_ioctl_siwessid (6) 'willow' Mar 19 14:47:32 adr kernel: [1473863.088117] rt2870sta: rt_ioctl_siwessid (6) 'willow' Mar 19 14:47:32 adr kernel: [1473863.486994] rt2870sta: rt_ioctl_siwessid (6) 'willow' }}} Initially network manager was on, then I turned it off. {{{ blaise@adr: /wg/stor5/blaise $ lsb_release -rd Description: Ubuntu 9.10 Release: 9.10 blaise@adr: /wg/stor5/blaise $ apt-cache policy network-manager network-manager: Installed: 0.8~a~git.20091013t193206.679d548-0ubuntu1 Candidate: 0.8~a~git.20091013t193206.679d548-0ubuntu1 Version table: *** 0.8~a~git.20091013t193206.679d548-0ubuntu1 0 500 http://aptproxy karmic/main Packages 100 /var/lib/dpkg/status }}} ProblemType: Bug Architecture: amd64 Date: Fri Mar 19 14:41:48 2010 DistroRelease: Ubuntu 9.10 IpRoute: 10.0.0.0/22 dev eth0 proto kernel scope link src 10.0.0.218 metric 1 169.254.0.0/16 dev eth0 scope link metric 1000 default via 10.0.0.1 dev eth0 proto static NonfreeKernelModules: nvidia Package: network-manager 0.8~a~git.20091013t193206.679d548-0ubuntu1 ProcEnviron: PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcVersionSignature: Ubuntu 2.6.31-16.53-generic SourcePackage: network-manager Uname: Linux 2.6.31-16-generic x86_64 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/542226/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
