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[Chris Chen <1112751@xxxxxxxxxxxxxxxxxx>]

Amazing that after one year, this bug has not been fixed. I just had
this problem affect me. I have two laptops, both of which worked fine
for a very long time, over two years. Then I upgraded my wireless
router, and suddenly DHCP stopped working, it would timeout. I read the
instructions here about disabling the Broadcam driver and forcing the
use of the brcmsmac driver instead, and both laptops work again. Seems
like the wl driver should not be the default driver for ubuntu, or else
it should be easier to switch between drivers.

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https://bugs.launchpad.net/bugs/1112751

Title:
  DHCP over wireless stopped working

Status in “bcmwl” package in Ubuntu:
  Confirmed

Bug description:
  Hi,

  I have a Dell Vostro 3700 notebook running Ubuntu 12.04.1 LTS and a Netgear FWG114P WLAN router which I bought 2005.
  Since the update on Sunday 27. January 2013 the NetworkManager fails to connect to my WLAN Router.

  The Indicator applet shows all available wireless networks, but the
  NetworkManager fails to establish the connection. Due to the fact that
  I see the available networks I think the WLAN driver itself works
  fine. It seems to be a DHCP problem, but I have no idead how to solve
  it.

  If I boot from an Ubuntu 12.04 USB stick which I created about 1 year
  ago WLAN works fine. Thus it's not a hardware problem.

  Please could you give me some hints how to solve this problem.

  Thanks & Best regards,

  Franz Hollerer

  # /sbin/ifconfig 
  eth0      Link encap:Ethernet  HWaddr f0:4d:a2:87:90:5a  
            inet addr:192.168.0.7  Bcast:192.168.0.255  Mask:255.255.255.0
            inet6 addr: fe80::f24d:a2ff:fe87:905a/64 Scope:Link
            UP BROADCAST RUNNING MULTICAST  MTU:1492  Metric:1
            RX packets:2032 errors:0 dropped:0 overruns:0 frame:0
            TX packets:1793 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:1000 
            RX bytes:1465900 (1.4 MB)  TX bytes:249876 (249.8 KB)
            Interrupt:47 Base address:0x6000 

  eth1      Link encap:Ethernet  HWaddr 5c:ac:4c:7e:c4:0f  
            inet6 addr: fe80::5eac:4cff:fe7e:c40f/64 Scope:Link
            UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
            RX packets:22 errors:2 dropped:0 overruns:0 frame:3780
            TX packets:300 errors:141 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:1000 
            RX bytes:3602 (3.6 KB)  TX bytes:66602 (66.6 KB)
            Interrupt:17
   
  # iwconfig
  lo        no wireless extensions.

  eth1      IEEE 802.11abg  ESSID:"Catopsis"  
            Mode:Managed  Frequency:2.432 GHz  Access Point: 00:0F:B5:51:94:4A   
            Bit Rate=54 Mb/s   Tx-Power=200 dBm   
            Retry  long limit:7   RTS thr:off   Fragment thr:off
            Encryption key:off
            Power Management:on
            Link Quality=70/70  Signal level=-21 dBm  
            Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
            Tx excessive retries:0  Invalid misc:0   Missed beacon:0

  eth0      no wireless extensions.
  lo        Link encap:Local Loopback  
            inet addr:127.0.0.1  Mask:255.0.0.0
            inet6 addr: ::1/128 Scope:Host
            UP LOOPBACK RUNNING  MTU:16436  Metric:1
            RX packets:392 errors:0 dropped:0 overruns:0 frame:0
            TX packets:392 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:0 
            RX bytes:33528 (33.5 KB)  TX bytes:33528 (33.5 KB)

  Excerpt from dmsg:
  [   11.517377] eth1: Broadcom BCM4727 802.11 Hybrid Wireless Controller 6.20.155.1 (r326264)

  Excerpt from /var/log/syslog:

  avahi-daemon[945]: Joining mDNS multicast group on interface eth1.IPv6 with address fe80::5eac:4cff:fe7e:c40f.
  avahi-daemon[945]: New relevant interface eth1.IPv6 for mDNS.
  avahi-daemon[945]: Registering new address record for fe80::5eac:4cff:fe7e:c40f on eth1.*.
  NetworkManager[948]: <info> Auto-activating connection 'Catopsis'.
  NetworkManager[948]: <info> Activation (eth1) starting connection 'Catopsis'
  NetworkManager[948]: <info> (eth1): device state change: disconnected -> prepare (reason 'none') [30 40 0]
  NetworkManager[948]: <info> Activation (eth1) Stage 1 of 5 (Device Prepare) scheduled...
  NetworkManager[948]: <info> Activation (eth1) Stage 1 of 5 (Device Prepare) started...
  NetworkManager[948]: <info> Activation (eth1) Stage 2 of 5 (Device Configure) scheduled...
  NetworkManager[948]: <info> Activation (eth1) Stage 1 of 5 (Device Prepare) complete.
  NetworkManager[948]: <info> Activation (eth1) Stage 2 of 5 (Device Configure) starting...
  NetworkManager[948]: <info> (eth1): device state change: prepare -> config (reason 'none') [40 50 0]
  NetworkManager[948]: <info> Activation (eth1/wireless): access point 'Catopsis' has security, but secrets are required.
  NetworkManager[948]: <info> (eth1): device state change: config -> need-auth (reason 'none') [50 60 0]
  NetworkManager[948]: <info> Activation (eth1) Stage 2 of 5 (Device Configure) complete.
  NetworkManager[948]: <info> Activation (eth1) Stage 1 of 5 (Device Prepare) scheduled...
  NetworkManager[948]: <info> Activation (eth1) Stage 1 of 5 (Device Prepare) started...
  NetworkManager[948]: <info> (eth1): device state change: need-auth -> prepare (reason 'none') [60 40 0]
  NetworkManager[948]: <info> Activation (eth1) Stage 2 of 5 (Device Configure) scheduled...
  NetworkManager[948]: <info> Activation (eth1) Stage 1 of 5 (Device Prepare) complete.
  NetworkManager[948]: <info> Activation (eth1) Stage 2 of 5 (Device Configure) starting...
  NetworkManager[948]: <info> (eth1): device state change: prepare -> config (reason 'none') [40 50 0]
  NetworkManager[948]: <info> Activation (eth1/wireless): connection 'Catopsis' has security, and secrets exist.  No new secrets needed.
  NetworkManager[948]: <info> Config: added 'ssid' value 'Catopsis'
  NetworkManager[948]: <info> Config: added 'scan_ssid' value '1'
  NetworkManager[948]: <info> Config: added 'key_mgmt' value 'WPA-PSK'
  NetworkManager[948]: <info> Config: added 'psk' value '<omitted>'
  NetworkManager[948]: <info> Activation (eth1) Stage 2 of 5 (Device Configure) complete.
  NetworkManager[948]: <info> Config: set interface ap_scan to 1
  NetworkManager[948]: <info> (eth1): supplicant interface state: disconnected -> scanning
  wpa_supplicant[1003]: Trying to associate with 00:0f:b5:51:94:4a (SSID='Catopsis' freq=2432 MHz)
  NetworkManager[948]: <info> (eth1): supplicant interface state: scanning -> associating
  wpa_supplicant[1003]: Associated with 00:0f:b5:51:94:4a
  wpa_supplicant[1003]: WPA: Key negotiation completed with 00:0f:b5:51:94:4a [PTK=CCMP GTK=TKIP]
  wpa_supplicant[1003]: CTRL-EVENT-CONNECTED - Connection to 00:0f:b5:51:94:4a completed (reauth) [id=0 id_str=]
  NetworkManager[948]: <info> (eth1): supplicant interface state: associating -> completed
  NetworkManager[948]: <info> Activation (eth1/wireless) Stage 2 of 5 (Device Configure) successful.  Connected to wireless network 'Catopsis'.
  NetworkManager[948]: <info> Activation (eth1) Stage 3 of 5 (IP Configure Start) scheduled.
  NetworkManager[948]: <info> Activation (eth1) Stage 3 of 5 (IP Configure Start) started...
  NetworkManager[948]: <info> (eth1): device state change: config -> ip-config (reason 'none') [50 70 0]
  NetworkManager[948]: <info> Activation (eth1) Beginning DHCPv4 transaction (timeout in 45 seconds)
  NetworkManager[948]: <info> dhclient started with pid 2455
  NetworkManager[948]: <info> Activation (eth1) Beginning IP6 addrconf.
  avahi-daemon[945]: Withdrawing address record for fe80::5eac:4cff:fe7e:c40f on eth1.
  avahi-daemon[945]: Leaving mDNS multicast group on interface eth1.IPv6 with address fe80::5eac:4cff:fe7e:c40f.
  avahi-daemon[945]: Interface eth1.IPv6 no longer relevant for mDNS.
  NetworkManager[948]: <info> Activation (eth1) Stage 3 of 5 (IP Configure Start) complete.
  dhclient: Internet Systems Consortium DHCP Client 4.1-ESV-R4
  dhclient: Copyright 2004-2011 Internet Systems Consortium.
  dhclient: All rights reserved.
  dhclient: For info, please visit https://www.isc.org/software/dhcp/
  dhclient: 
  NetworkManager[948]: <info> (eth1): DHCPv4 state changed nbi -> preinit
  dhclient: Listening on LPF/eth1/5c:ac:4c:7e:c4:0f
  dhclient: Sending on   LPF/eth1/5c:ac:4c:7e:c4:0f
  dhclient: Sending on   Socket/fallback
  dhclient: DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 3
  avahi-daemon[945]: Joining mDNS multicast group on interface eth1.IPv6 with address fe80::5eac:4cff:fe7e:c40f.
  avahi-daemon[945]: New relevant interface eth1.IPv6 for mDNS.
  avahi-daemon[945]: Registering new address record for fe80::5eac:4cff:fe7e:c40f on eth1.*.
  dhclient: DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 6
  dhclient: DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 6
  kernel: [ 1167.949197] eth1: no IPv6 routers present
  dhclient: DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 6
  NetworkManager[948]: <info> (eth1): IP6 addrconf timed out or failed.
  NetworkManager[948]: <info> Activation (eth1) Stage 4 of 5 (IPv6 Configure Timeout) scheduled...
  NetworkManager[948]: <info> Activation (eth1) Stage 4 of 5 (IPv6 Configure Timeout) started...
  NetworkManager[948]: <info> Activation (eth1) Stage 4 of 5 (IPv6 Configure Timeout) complete.
  dhclient: DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 15
  dhclient: DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 19
  NetworkManager[948]: <warn> (eth1): DHCPv4 request timed out.
  NetworkManager[948]: <info> (eth1): canceled DHCP transaction, DHCP client pid 2455
  NetworkManager[948]: <info> Activation (eth1) Stage 4 of 5 (IPv4 Configure Timeout) scheduled...
  NetworkManager[948]: <info> Activation (eth1) Stage 4 of 5 (IPv4 Configure Timeout) started...
  NetworkManager[948]: <info> (eth1): device state change: ip-config -> failed (reason 'ip-config-unavailable') [70 120 5]
  NetworkManager[948]: <warn> Activation (eth1) failed for access point (Catopsis)
  NetworkManager[948]: <info> Marking connection 'Catopsis' invalid.
  NetworkManager[948]: <warn> Activation (eth1) failed.
  NetworkManager[948]: <info> Activation (eth1) Stage 4 of 5 (IPv4 Configure Timeout) complete.
  NetworkManager[948]: <info> (eth1): device state change: failed -> disconnected (reason 'none') [120 30 0]
  NetworkManager[948]: <info> (eth1): deactivating device (reason 'none') [0]
  avahi-daemon[946]: Withdrawing address record for fe80::5eac:4cff:fe7e:c40f on eth1.

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