Description of problem: When I awoke my FC5 laptop this morning after arriving in the office, NetworkManager was unable to find any network devices. I tried unchecking and then rechecking the "Enable Networking" option in the applet's context menu, which caused NetworkManager to write the following message to the system log: Apr 6 11:48:09 myk NetworkManager: <WARNING> nm_add_initial_devices (): could not find existing networking devices: The maximum number of pending replies per connection has been reached I then tried restarting NetworkManager via "sudo service NetworkManager stop; sudo service NetworkManager start", and that worked: NetworkManager was once again able to see my wired and wireless network devices. Version-Release number of selected component (if applicable): 0.6.0-3 How reproducible: this is the first time it has happened Additional Info: [myk@myk ~]$ uptime 11:57:24 up 9 days, 1:57, 6 users, load average: 0.10, 0.74, 0.87 I regularly travel between my home and the office, putting my laptop to sleep for the trip. I also put the laptop to sleep when going between my desk in the office (where the laptop has wired access) and other parts of the building for meetings (where I use the wireless connection).
I've started seeing this a *lot* (pretty much every time I come into the office, start in a meeting, as I've been doing every day this week, and then move to my desk) when switching from wireless to wired. I suspect something in recent NetworkManager updates made this worse; restarting NetworkManager made things work again. Myk mentioned that he's recently been seeing it a lot more often.
Fixed in FC6 I'm pretty sure; it's running up against an obscenely low D-Bus pending call limit. The fix is to either boost the dbus limit or boost the limit in the NM service config file.