On Fri, 2009-01-16 at 22:36 +0100, Sébastien Mazy wrote: > On Fri, Jan 16, 2009 at 03:24:23PM -0500, Dan Williams wrote: > > Carrier detection is driven by netlink events, so the issue could be in > > a number of places. To do top-level debugging, when you plug a cable in > > and unplug it again, does anything happen in the log? > > Thanks for your really quick reply. Here are a few more tests. > > Situation: > - no cable connected > - wlan0 configured by NM > - static eth0 configured by NM > > Action: > - plug the cable in > > /var/log/messages.log: > > 0000:00:19.0: eth0: Link is Up 100 Mbps Full Duplex, Flow Control: RX/TX > 0000:00:19.0: eth0: 10/100 speed: disabling TSO > ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready > > Action: > - unplug the cable > > /var/log/messages.log: > > 0000:00:19.0: eth0: Link is Down > NetworkManager: <info> (eth0): carrier now OFF (device state 8) > NetworkManager: <info> (eth0): device state change: 8 -> 2 > NetworkManager: <info> (eth0): deactivating device (reason: 40). > NetworkManager: <info> Policy set 'Auto my_wifi_network' (wlan0) as default > for routing and DNS. > > Action: > - plug the cable in > > /var/log/messages.log: > > 0000:00:19.0: eth0: Link is Up 100 Mbps Full Duplex, Flow Control: RX/TX > 0000:00:19.0: eth0: 10/100 speed: disabling TSO > NetworkManager: <info> (eth0): carrier now ON (device state 2) > NetworkManager: <info> (eth0): device state change: 2 -> 3 > NetworkManager: <info> Activation (eth0) starting connection 'home static' > NetworkManager: <info> (eth0): device state change: 3 -> 4 > NetworkManager: <info> Activation (eth0) Stage 1 of 5 (Device Prepare) > scheduled... > NetworkManager: <info> Activation (eth0) Stage 1 of 5 (Device Prepare) > started... > NetworkManager: <info> Activation (eth0) Stage 2 of 5 (Device Configure) > scheduled... > NetworkManager: <info> Activation (eth0) Stage 1 of 5 (Device Prepare) > complete. > NetworkManager: <info> Activation (eth0) Stage 2 of 5 (Device Configure) > starting... > NetworkManager: <info> (eth0): device state change: 4 -> 5 > NetworkManager: <info> Activation (eth0) Stage 2 of 5 (Device Configure) > successful. > NetworkManager: <info> Activation (eth0) Stage 3 of 5 (IP Configure Start) > scheduled. > NetworkManager: <info> Activation (eth0) Stage 2 of 5 (Device Configure) > complete. > NetworkManager: <info> Activation (eth0) Stage 3 of 5 (IP Configure Start) > started... > NetworkManager: <info> (eth0): device state change: 5 -> 7 > NetworkManager: <info> Activation (eth0) Stage 4 of 5 (IP Configure Get) > scheduled... > NetworkManager: <info> Activation (eth0) Stage 3 of 5 (IP Configure Start) > complete. > NetworkManager: <info> Activation (eth0) Stage 4 of 5 (IP Configure Get) > started... > NetworkManager: <info> Activation (eth0) Stage 5 of 5 (IP Configure Commit) > scheduled... > NetworkManager: <info> Activation (eth0) Stage 4 of 5 (IP Configure Get) > complete. > NetworkManager: <info> Activation (eth0) Stage 5 of 5 (IP Configure Commit) > started... > NetworkManager: <info> Policy set 'Auto my_wifi_network' (wlan0) as default > for routing and DNS. > NetworkManager: <info> (eth0): device state change: 7 -> 8 > NetworkManager: <info> Policy set 'home static' (eth0) as default for > routing and DNS. > NetworkManager: <info> Activation (eth0) successful, device activated. > NetworkManager: <info> Activation (eth0) Stage 5 of 5 (IP Configure Commit) > complete. > > > Failing that, > > we'll need to make a netlink carrier test tool to show what's happening > > on netlink and see if the kernel/driver is lying to us or not delivering > > events. > > Another detail: the problem only occurs on the first start of NM. If I > stop it and start it again, I'm connected through wlan0 and NM > acknowledges there is no cable plugged. > > With these elements, it seems unlikely that the problem is related to > NM. I'm interested in monitoring netlink messages though. Are there some > tools to do so?
Not specifically, I'll have to extract the NM netlink monitor code and put it into a binary that you can just build and run to see what happens, or, if you're comfortable re-building the package for your distro I can give you a patch that will debug the activity more. Dan _______________________________________________ NetworkManager-list mailing list [email protected] http://mail.gnome.org/mailman/listinfo/networkmanager-list
