I just wanted to let anyone who runs across this know that I was able to resolve the issue. I checked the output of dmesg on the laptop, and I saw a message "disassociating by local choice (reason=3)" After doing a Google search and finding this was a widely reported problem, some of the proposed solutions included disabling power management on the laptop's wifi card, disabling wpa_supplicant, and changing the channel the connection is using. I was unable to disable wpa_supplicant. If I killed the process, it respawned. If I uninstalled wpa_supplicant completely, NetworkManager refused to work at all. I ended up manually specifying the connection to use channel 10 as one person recommended, and voila! I was able to connect, and each machine was able to ping the other. Now if I can just get internet connection sharing working....
On 10/8/11, Patrick McMunn <[email protected]> wrote: > I'm using NetworkManager 0.9.1.90 (just installed yesterday; I've been > using 0.9.0 for a while) and KNetworkManager from git. I have never > been able to get a working ad-hoc network between two Linux machines - > only when I create it with Windows and connect to it with a Linux > machine. > > Here's my setup in KNetworkManager: > SSID: 1337 > Mode: Ad-Hoc > Band: b/g > Channel: 3 > BSSID: <blank> > Restrict to Interface: Any > Cloned MAC Address: <blank> > MTU: Automatic > > IPv4 Address: Link-Local > IPv6 Address: disabled > > results of route from command line of desktop computer > > Kerne IP routing table > Destination Gateway Genmask Flags Metric Ref > Use Iface > loopback * 255.0.0.0 U 0 0 0 lo > link-local * 255.255.0.0 U 2 0 0 > wlan0 > 224.0.0.0 * 240.0.0.0 U 0 0 0 > wlan0 > > Settings are the same on desktop and laptop computers. Link-Local is > the only setting that will work at all under IPv4 settings. DHCP > results: attempts to connect but fails. I have dhcpcd set to fallback > to zeroconf, but that doesn't work with NM. I haven't had any luck > with static IPs either. > > When using Link-Local, however, I can connect to the network easily. > Then I can walk over to my laptop, use KNetworkManager's scan feature > and identify the essid I created on the desktop. I have to change IPv4 > settings to Link-Local, but everything else is usually identified > correctly. Then I save and can connect - apparently. If I look at the > network usage statistics of KNetworkManager, the graph indicates > network activity for a few moments at the time I attempt to join the > network, but then it goes back to zero never to do anything else. I > cannot ping either machine from the other. I have tried this with no > encryption at all for troubleshooting and with WPA Personal just to > see what would happen - both with the exact same results (when I tried > encryption, it even asked for my passphrase before connecting, so that > seemed to work). > > Once I get this solved, I want to be able to share internet connection > over wifi. > > Any ideas what's wrong? > > -- > Patrick McMunn > > - Learn more about the Catholic Faith: http://www.catholic.com/ > - Pray with the Church: http://www.universalis.com/ _______________________________________________ networkmanager-list mailing list [email protected] http://mail.gnome.org/mailman/listinfo/networkmanager-list
