NetworkManager fails to awaken on resume from sleep or on X restart

[Darin Miller]

Binary package hint: network-manager

System: Dell XPS M1530 laptop
           *-network
                description: Wireless interface
                product: PRO/Wireless 4965 AG or AGN [Kedron] Network Connection
                vendor: Intel Corporation
Ubuntu 10.04, Pre-release updates enabled.

Updates from the week of 23-May causes network-manager to intermittently fail to start when awaking the system from sleep or restarting X via Alt-sys-K. Restarting the system "fixes" the connection.

Sys log shows:
May 30 12:12:05 Romeo NetworkManager: <info> (wlan4): device state change: 8 -> 3 (reason 38)
May 30 12:12:05 Romeo NetworkManager: <info> (wlan4): deactivating device (reason: 38).
May 30 12:12:05 Romeo NetworkManager: <info> (wlan4): canceled DHCP transaction, dhcp client pid 1814
May 30 12:12:05 Romeo NetworkManager: <WARN> check_one_route(): (wlan4) error -34 returned from rtnl_route_del(): Sucess#012
May 30 12:12:05 Romeo avahi-daemon[992]: Withdrawing address record for 192.168.1.4 on wlan4.
May 30 12:12:05 Romeo avahi-daemon[992]: Leaving mDNS multicast group on interface wlan4.IPv4 with address 192.168.1.4.
May 30 12:12:05 Romeo avahi-daemon[992]: Interface wlan4.IPv4 no longer relevant for mDNS.
May 30 12:12:06 Romeo kernel: [ 1968.550397] wlan4: deauthenticating from 00:24:7b:f4:6f:cc by local choice (reason=3)
May 30 12:12:06 Romeo wpa_supplicant[1206]: CTRL-EVENT-DISCONNECTED - Disconnect event - remove keys
May 30 12:12:06 Romeo acpid: client 1252[0:0] has disconnected
May 30 12:12:06 Romeo acpid: client 1252[0:0] has disconnected
May 30 12:12:06 Romeo acpid: client connected from 2921[0:0]
May 30 12:12:06 Romeo acpid: 1 client rule loaded
May 30 12:12:08 Romeo acpid: client connected from 2921[0:0]

[Thomas Hood (jdthood)]

Hi. Is this reproducible under Ubuntu 12.04?

[Thomas Hood (jdthood)]

Does "iwconfig wlan0 power off" fix the problem (until reboot)?