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[Bug 1323089] Re: wpa_supplicant writes to syslog every 2 minutes

 

I have connectivity issues with this problem. The only reason I noticed
the connectivity issue is because my work VPN disconnects. Otherwise I
wouldn't have noticed. So I guess that this is a loss of only a few
packets which TCP will definitely recover for most applications.

Pinning the BSSID (not just the SSID) through NetworkManager GUI did fix
it for me. I run a 2.4ghz and a 5ghz network with the same SSID. I'm
pretty sure this is what triggers the issue. Since other OSes are fine
with it (including android) this is a bug in either wpa_supplicant or
NetworkManager.

Since I'm unsure whether people just don't notice the connectivity issue
(because TCP recovers so well and UDP is all about being unreliable) I'm
with Anders on this one and reluctant to file a new issue.

I don't have the time and energy to dig into the source and all but I'm
willing to run diagnostics, describe more my setup and try fixes if
people are interested in nailing this one.

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https://bugs.launchpad.net/bugs/1323089

Title:
  wpa_supplicant writes to syslog every 2 minutes

Status in “wpa” package in Ubuntu:
  Confirmed

Bug description:
  Ubuntu 14.04 LTS
  wpasupplicant 2.1-0ubuntu1

  wpa_supplicant is writing to syslog every couple of minutes. Example
  output:

  May 25 19:57:18 ubuntu wpa_supplicant[1161]: wlan0: CTRL-EVENT-SCAN-STARTED 
  May 25 19:57:23 ubuntu wpa_supplicant[1161]: nl80211: send_and_recv->nl_recvmsgs failed: -33
  May 25 19:59:18 ubuntu wpa_supplicant[1161]: wlan0: CTRL-EVENT-SCAN-STARTED 
  May 25 19:59:23 ubuntu wpa_supplicant[1161]: nl80211: send_and_recv->nl_recvmsgs failed: -33
  May 25 20:00:58 ubuntu wpa_supplicant[1161]: wlan0: CTRL-EVENT-SCAN-STARTED 
  May 25 20:01:18 ubuntu wpa_supplicant[1161]: wlan0: CTRL-EVENT-SCAN-STARTED 
  May 25 20:01:24 ubuntu wpa_supplicant[1161]: nl80211: send_and_recv->nl_recvmsgs failed: -33
  May 25 20:03:18 ubuntu wpa_supplicant[1161]: wlan0: CTRL-EVENT-SCAN-STARTED 
  May 25 20:03:23 ubuntu wpa_supplicant[1161]: nl80211: send_and_recv->nl_recvmsgs failed: -33
  May 25 20:05:18 ubuntu wpa_supplicant[1161]: wlan0: CTRL-EVENT-SCAN-STARTED 
  May 25 20:05:23 ubuntu wpa_supplicant[1161]: nl80211: send_and_recv->nl_recvmsgs failed: -33
  May 25 20:05:58 ubuntu wpa_supplicant[1161]: wlan0: CTRL-EVENT-SCAN-STARTED 
  May 25 20:07:18 ubuntu wpa_supplicant[1161]: wlan0: CTRL-EVENT-SCAN-STARTED 
  May 25 20:07:23 ubuntu wpa_supplicant[1161]: nl80211: send_and_recv->nl_recvmsgs failed: -33
  May 25 20:09:18 ubuntu wpa_supplicant[1161]: wlan0: CTRL-EVENT-SCAN-STARTED 
  May 25 20:09:23 ubuntu wpa_supplicant[1161]: nl80211: send_and_recv->nl_recvmsgs failed: -33
  May 25 20:10:58 ubuntu wpa_supplicant[1161]: wlan0: CTRL-EVENT-SCAN-STARTED 
  May 25 20:13:18 ubuntu wpa_supplicant[1161]: message repeated 2 times: [ wlan0: CTRL-EVENT-SCAN-STARTED ]
  May 25 20:13:23 ubuntu wpa_supplicant[1161]: nl80211: send_and_recv->nl_recvmsgs failed: -33

  The message seems harmless as far as the network is concerned, meaning
  there is no problem with the wifi connection. But it's spamming the
  syslog, making it very difficult to find any other thing there, and
  it's generating constant writes to disk, and an unnecessarily large
  syslog file.

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