Further to my comment above, this is the content from end of /var/log/daemon.log. It appears to be timing out on a DHCP request. Since my AP hasn't changed in years, it must be a change at the Ubuntu end that has produced this issue. Since the last update, my workaround no longer works around, so am a bit stuck. I tried the disabling IPV6 on the command line but this hasn't helped.
Jun 15 20:33:27 james-desktop NetworkManager: <info> DHCP: device wlan0 state changed normal exit -> preinit Jun 15 20:33:27 james-desktop dhclient: Listening on LPF/wlan0/00:21:27:c1:33:19 Jun 15 20:33:27 james-desktop dhclient: Sending on LPF/wlan0/00:21:27:c1:33:19 Jun 15 20:33:27 james-desktop dhclient: Sending on Socket/fallback Jun 15 20:33:31 james-desktop dhclient: DHCPREQUEST of 192.168.1.3 on wlan0 to 255.255.255.255 port 67 Jun 15 20:33:53 james-desktop dhclient: last message repeated 2 times Jun 15 20:33:53 james-desktop dhclient: DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 5 Jun 15 20:33:58 james-desktop dhclient: DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 7 Jun 15 20:34:05 james-desktop dhclient: DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 14 Jun 15 20:34:13 james-desktop NetworkManager: <info> (wlan0): DHCP transaction took too long, stopping it. Jun 15 20:34:13 james-desktop NetworkManager: <info> (wlan0): canceled DHCP transaction, dhcp client pid 2175 Jun 15 20:34:13 james-desktop NetworkManager: <info> Activation (wlan0) Stage 4 of 5 (IP4 Configure Timeout) scheduled... Jun 15 20:34:13 james-desktop NetworkManager: <info> Activation (wlan0) Stage 4 of 5 (IP4 Configure Timeout) started... Jun 15 20:34:13 james-desktop NetworkManager: <info> (wlan0): device state change: 7 -> 9 (reason 5) Jun 15 20:34:13 james-desktop NetworkManager: <info> Activation (wlan0) failed for access point (JamesOne) Jun 15 20:34:13 james-desktop NetworkManager: <info> Marking connection 'JamesOne' invalid. Jun 15 20:34:13 james-desktop NetworkManager: <info> Activation (wlan0) failed. Jun 15 20:34:13 james-desktop NetworkManager: <info> Activation (wlan0) Stage 4 of 5 (IP4 Configure Timeout) complete. Jun 15 20:34:13 james-desktop NetworkManager: <info> (wlan0): device state change: 9 -> 3 (reason 0) Jun 15 20:34:13 james-desktop NetworkManager: <info> (wlan0): deactivating device (reason: 0). Jun 15 20:34:13 james-desktop wpa_supplicant[1125]: CTRL-EVENT-DISCONNECTED - Disconnect event - remove keys -- Wireless connection frequently drops [deauthenticating by local choice (reason=3)] https://bugs.launchpad.net/bugs/548992 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs