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[brunofin <bruno.finger12@xxxxxxxxx>]

This problem is not occurring anymore since a long time, if I remember
well it was fixed after upgrading the system to a newer version of
Ubuntu, probably 12.04.

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https://bugs.launchpad.net/bugs/975975

Title:
  Kernel 3.0 wireless Warning bug

Status in The Linux Mint Distribution:
  New
Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  I'm using Ubuntu 11.10 64-bits.
  My hardware is an Acer Aspire 5630 notebook. Wi-fi card has 802.11 B/G support (no N), and is connected to a router running a G+N network. All other devices can connect to it with no problem, and the same notebook also have no problems in windows with the network.

  The following problem keeps occurring repeatedly:

  The notebook can connect to the wireless network in G mode and browse
  the web without any problems, but at certain point (can be after 5
  minutes of use, or also 2 hours of use, really random) it disconnects
  and can't connect to it anymore. The window to enter network password
  pops-up and then I enter the password and still it can't connect (same
  window pops-up again). It keeps going like this also for a random time
  (5min.~2hours) until it suddenly can connect again. Restarting seems
  to solve the not able to connect problem but doesn't keep it from
  occurring again. Dmesg shows the following trace:

  ~~~~~~~~~~~~~~~~

  [  233.380172] ieee80211 phy0: wlan0: No probe response from AP 00:1e:ab:05:7a:72 after 500ms, disconnecting.
  [  233.404351] cfg80211: All devices are disconnected, going to restore regulatory settings
  [  233.404362] cfg80211: Restoring regulatory settings
  [  233.404372] cfg80211: Calling CRDA to update world regulatory domain
  [  233.411231] cfg80211: Ignoring regulatory request Set by core since the driver uses its own custom regulatory domain 
  [  233.411239] cfg80211: World regulatory domain updated:
  [  233.411243] cfg80211:     (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
  [  233.411250] cfg80211:     (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
  [  233.411256] cfg80211:     (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
  [  233.411262] cfg80211:     (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
  [  233.411267] cfg80211:     (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
  [  233.411273] cfg80211:     (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
  [  234.715144] wlan0: authenticate with 00:1e:ab:05:7a:72 (try 1)
  [  234.724381] wlan0: authenticated
  [  234.725847] wlan0: associate with 00:1e:ab:05:7a:72 (try 1)
  [  234.924165] wlan0: associate with 00:1e:ab:05:7a:72 (try 2)
  [  235.124153] wlan0: associate with 00:1e:ab:05:7a:72 (try 3)
  [  235.324181] wlan0: association with 00:1e:ab:05:7a:72 timed out
  [  241.550941] wlan0: direct probe to 00:1e:ab:05:7a:72 (try 1/3)
  [  241.748185] wlan0: direct probe to 00:1e:ab:05:7a:72 (try 2/3)
  [  241.948167] wlan0: direct probe to 00:1e:ab:05:7a:72 (try 3/3)
  [  242.148063] wlan0: direct probe to 00:1e:ab:05:7a:72 timed out
  [  242.148157] ------------[ cut here ]------------
  [  242.148198] WARNING: at /build/buildd/linux-3.0.0/net/wireless/mlme.c:307 __cfg80211_auth_remove+0x70/0xd0 [cfg80211]()
  [  242.148204] Hardware name: Aspire 5630     
  [  242.148207] Modules linked in: snd_hrtimer bnep rfcomm bluetooth parport_pc ppdev binfmt_misc nls_iso8859_1 nls_cp437 vfat fat arc4 snd_hda_codec_realtek iwl3945 i915 gspca_vc032x gspca_main videodev snd_hda_intel snd_hda_codec iwl_legacy usbhid v4l2_compat_ioctl32 hid snd_hwdep snd_pcm mac80211 snd_seq_midi drm_kms_helper pcmcia joydev snd_rawmidi snd_seq_midi_event yenta_socket snd_seq drm snd_timer pcmcia_rsrc snd_seq_device psmouse serio_raw pcmcia_core cfg80211 snd i2c_algo_bit soundcore snd_page_alloc wmi video lp parport usb_storage uas sdhci_pci sdhci b44 ssb
  [  242.148293] Pid: 14, comm: kworker/u:1 Not tainted 3.0.0-13-generic #22-Ubuntu
  [  242.148298] Call Trace:
  [  242.148311]  [<ffffffff8105e8af>] warn_slowpath_common+0x7f/0xc0
  [  242.148319]  [<ffffffff8105e90a>] warn_slowpath_null+0x1a/0x20
  [  242.148337]  [<ffffffffa00a74b0>] __cfg80211_auth_remove+0x70/0xd0 [cfg80211]
  [  242.148356]  [<ffffffffa00a75a1>] cfg80211_send_auth_timeout+0x71/0xd0 [cfg80211]
  [  242.148381]  [<ffffffffa01a0407>] ? ieee80211_hw_config+0x117/0x220 [mac80211]
  [  242.148406]  [<ffffffffa01acee4>] ieee80211_probe_auth_done+0xa4/0xb0 [mac80211]
  [  242.148431]  [<ffffffffa01b07c6>] ieee80211_work_work+0x1e6/0x640 [mac80211]
  [  242.148456]  [<ffffffffa01b05e0>] ? ieee80211_work_rx_queued_mgmt+0x2d0/0x2d0 [mac80211]
  [  242.148466]  [<ffffffff8107c04a>] process_one_work+0x11a/0x480
  [  242.148472]  [<ffffffff8107cdf5>] worker_thread+0x165/0x370
  [  242.148479]  [<ffffffff8107cc90>] ? manage_workers.isra.30+0x130/0x130
  [  242.148486]  [<ffffffff8108129c>] kthread+0x8c/0xa0
  [  242.148494]  [<ffffffff815f38e4>] kernel_thread_helper+0x4/0x10
  [  242.148501]  [<ffffffff81081210>] ? flush_kthread_worker+0xa0/0xa0
  [  242.148508]  [<ffffffff815f38e0>] ? gs_change+0x13/0x13
  [  242.148512] ---[ end trace 8ff7b81e7e1c03c8 ]---
  [  248.371800] wlan0: direct probe to 00:1e:ab:05:7a:72 (try 1/3)
  [  248.568133] wlan0: direct probe to 00:1e:ab:05:7a:72 (try 2/3)
  [  248.768075] wlan0: direct probe to 00:1e:ab:05:7a:72 (try 3/3)
  [  248.968171] wlan0: direct probe to 00:1e:ab:05:7a:72 timed out

  ~~~~~~~~~~~~~~~~~~~~~~

  bruno@bruno-laptop ~ $ uname -a
  Linux bruno-laptop 3.0.0-13-generic #22-Ubuntu SMP Wed Nov 2 13:27:26 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux

  ~~~~~~~~~~~~~~~~~~~~~~

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