I'll mirror the above reports, I'm using a Intel Corporation Centrino Advanced-N 6205 on Linux Mint 17 (Ubuntu 14.04 Trusty), I recently upgraded from 12.04 Linux Mint 16 (Ubuntu 13.04 Saucy) using a complete clean reinstall and now the problem manifests.
On Mint 16 (13.04) I had *no* wifi problems in my office (I've been here for 6 months). Since reinstalling 11 days ago with Mint 17 (14.04) in the office (with a BTHub) I'm kicked off of wifi every 5-15 minutes, at home (on a Virgin Wifi device) I have no connection problems. I believe the problem is a combination of 14.04 and the BTHubs here in the office (we have two, different SSIDs, I could use them both before, now both exhibit the same kick-me-off behaviour). Currently I solve the problem using "sudo pkill wpa_supplicant" as discovered in this thread. This takes me back online, it feels very much like the same behaviour shown in this thread with 14.04 and for #1294044. Before discovering this bug report I was using the widget in the notification bar to disable and then enable the wireless device. Re. "it tooks me ages to find this page" as others have noted - I've been hunting around with log messages for 11 days before I found this bug report, nothing else I found got me even close to a useful diagnosis. $ uname -a Linux ian-Latitude-E6420 3.13.0-24-generic #47-Ubuntu SMP Fri May 2 23:30:00 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux $ lspci ... 03:00.0 Network controller: Intel Corporation Centrino Advanced-N 6205 [Taylor Peak] (rev 34) I have the latest firmware for the 6205 (verifying against Intel's site: http://www.intel.com/support/wireless/wlan/sb/CS-034398.htm) $ sudo lshw -C network *-network description: Ethernet interface product: 82579LM Gigabit Network Connection vendor: Intel Corporation physical id: 19 bus info: pci@0000:00:19.0 logical name: eth0 version: 04 serial: 5c:26:0a:61:e2:24 capacity: 1Gbit/s width: 32 bits clock: 33MHz capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=2.3.2-k firmware=0.13-3 latency=0 link=no multicast=yes port=twisted pair resources: irq:43 memory:e6700000-e671ffff memory:e6780000-e6780fff ioport:5040(size=32) *-network description: Wireless interface product: Centrino Advanced-N 6205 [Taylor Peak] vendor: Intel Corporation physical id: 0 bus info: pci@0000:03:00.0 logical name: wlan0 version: 34 serial: a0:88:b4:65:ed:7c width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=3.13.0-24-generic firmware=18.168.6.1 ip=192.168.1.65 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn resources: irq:45 memory:e6600000-e6601fff A typical dmesg (from when the problem first starts to the wifi being offline): [22291.312726] wlan0: deauthenticated from 00:81:d8:64:33:4a (Reason: 6) [22291.344445] cfg80211: Calling CRDA to update world regulatory domain [22291.351954] cfg80211: World regulatory domain updated: [22291.351963] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) [22291.351998] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [22291.352004] cfg80211: (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [22291.352009] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) [22291.352013] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [22291.352017] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [22306.450438] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready The same for syslog: Nov 18 15:35:17 ian-Latitude-E6420 NetworkManager[1067]: <warn> Activation (wlan0/wireless): association took too long, failing activation. Nov 18 15:35:17 ian-Latitude-E6420 NetworkManager[1067]: <info> (wlan0): device state change: config -> failed (reason 'SSID not found') [50 120 53] Nov 18 15:35:17 ian-Latitude-E6420 NetworkManager[1067]: <info> NetworkManager state is now DISCONNECTED Nov 18 15:35:17 ian-Latitude-E6420 NetworkManager[1067]: <info> Marking connection 'Auto BTHub3-35MZ' invalid. Nov 18 15:35:17 ian-Latitude-E6420 NetworkManager[1067]: <warn> Activation (wlan0) failed for connection 'Auto BTHub3-35MZ' Nov 18 15:35:17 ian-Latitude-E6420 NetworkManager[1067]: <info> (wlan0): device state change: failed -> disconnected (reason 'none') [120 30 0] Nov 18 15:35:17 ian-Latitude-E6420 NetworkManager[1067]: <info> (wlan0): deactivating device (reason 'none') [0] Nov 18 15:35:17 ian-Latitude-E6420 NetworkManager[1067]: <info> (wlan0): supplicant interface state: scanning -> disconnected Nov 18 15:35:17 ian-Latitude-E6420 NetworkManager[1067]: <warn> Couldn't disconnect supplicant interface: This interface is not connected. I've tried the "nmcli nm sleep false" but it doesn't work for me, I don't see a "sleep" option: $ nmcli nm RUNNING STATE WIFI-HARDWARE WIFI WWAN-HARDWARE WWAN running disconnected enabled enabled enabled disabled $ sudo nmcli nm sleep false Error in sleep: Already awake and forcing it to sleep says that it is already awake. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1311257 Title: Wifi cannot connect or unstable after suspend 14.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-nettool/+bug/1311257/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
