No subject

...


Looking into the reasons why disconnects happen I see:
[~] grep reason= /var/log/syslog
May  8 20:43:57 tofuschnitzel wpa_supplicant[5513]: wlan0: CTRL-EVENT-DISCONNECTED bssid=00:3a:9d:b4:54:5a reason=2
May  8 20:44:04 tofuschnitzel wpa_supplicant[5513]: wlan0: CTRL-EVENT-DISCONNECTED bssid=00:3a:9d:b4:54:5a reason=2
May  8 20:45:02 tofuschnitzel kernel: [18472.914329] wlan0: deauthenticating from 00:3a:9d:b4:54:5a by local choice (reason=3)
May  8 20:45:02 tofuschnitzel wpa_supplicant[5513]: wlan0: CTRL-EVENT-DISCONNECTED bssid=00:00:00:00:00:00 reason=3
May  8 20:47:34 tofuschnitzel kernel: [18624.597387] wlan0: deauthenticating from 00:3a:9d:b4:54:5a by local choice (reason=3)
May  8 20:47:34 tofuschnitzel wpa_supplicant[5513]: wlan0: CTRL-EVENT-DISCONNECTED bssid=00:00:00:00:00:00 reason=3
May  8 20:48:27 tofuschnitzel kernel: [18677.928400] wlan0: deauthenticating from 00:3a:9d:b4:54:5a by local choice (reason=3)
May  8 20:48:27 tofuschnitzel wpa_supplicant[5513]: wlan0: CTRL-EVENT-DISCONNECTED bssid=00:00:00:00:00:00 reason=3
May  8 20:48:36 tofuschnitzel wpa_supplicant[5513]: wlan0: CTRL-EVENT-DISCONNECTED bssid=00:3a:9d:b4:54:5a reason=2
May  8 20:48:52 tofuschnitzel wpa_supplicant[5513]: wlan0: CTRL-EVENT-DISCONNECTED bssid=00:3a:9d:b4:54:5a reason=2
May  8 20:49:15 tofuschnitzel wpa_supplicant[5513]: wlan0: CTRL-EVENT-DISCONNECTED bssid=00:3a:9d:b4:54:5a reason=2
May  8 20:49:25 tofuschnitzel wpa_supplicant[5513]: wlan0: CTRL-EVENT-DISCONNECTED bssid=00:3a:9d:b4:54:5a reason=2
May  8 20:49:41 tofuschnitzel wpa_supplicant[5513]: wlan0: CTRL-EVENT-DISCONNECTED bssid=00:3a:9d:b4:54:5a reason=2
May  8 20:49:50 tofuschnitzel wpa_supplicant[5513]: wlan0: CTRL-EVENT-DISCONNECTED bssid=00:3a:9d:b4:54:5a reason=2
May  8 20:49:57 tofuschnitzel wpa_supplicant[5513]: wlan0: CTRL-EVENT-DISCONNECTED bssid=00:3a:9d:b4:54:5a reason=2
May  8 20:53:20 tofuschnitzel wpa_supplicant[5513]: wlan0: CTRL-EVENT-DISCONNECTED bssid=00:3a:9d:b4:54:5a reason=2
May  8 20:53:30 tofuschnitzel wpa_supplicant[5513]: wlan0: CTRL-EVENT-DISCONNECTED bssid=00:3a:9d:b4:54:5a reason=2
May  8 20:53:51 tofuschnitzel wpa_supplicant[5513]: wlan0: CTRL-EVENT-DISCONNECTED bssid=00:3a:9d:b4:54:5a reason=2
May  8 20:54:01 tofuschnitzel wpa_supplicant[5513]: wlan0: CTRL-EVENT-DISCONNECTED bssid=00:3a:9d:b4:54:5a reason=2
May  8 20:54:27 tofuschnitzel wpa_supplicant[5513]: wlan0: CTRL-EVENT-DISCONNECTED bssid=00:3a:9d:b4:54:5a reason=2
May  8 20:54:45 tofuschnitzel wpa_supplicant[5513]: wlan0: CTRL-EVENT-DISCONNECTED bssid=00:3a:9d:b4:54:5a reason=2
May  8 20:55:07 tofuschnitzel wpa_supplicant[5513]: wlan0: CTRL-EVENT-DISCONNECTED bssid=00:3a:9d:b4:54:5a reason=2
May  8 20:55:36 tofuschnitzel kernel: [19106.844710] wlan0: deauthenticating from 00:3a:9d:b4:54:5a by local choice (reason=3)
May  8 20:55:36 tofuschnitzel wpa_supplicant[5513]: wlan0: CTRL-EVENT-DISCONNECTED bssid=00:3a:9d:b4:54:5a reason=3
May  8 21:10:07 tofuschnitzel wpa_supplicant[5513]: wlan0: CTRL-EVENT-DISCONNECTED bssid=00:3a:9d:b4:54:5a reason=2
May  8 21:10:58 tofuschnitzel kernel: [20029.040231] wlan0: deauthenticating from 00:3a:9d:b4:54:5a by local choice (reason=3)
May  8 21:10:58 tofuschnitzel wpa_supplicant[5513]: wlan0: CTRL-EVENT-DISCONNECTED bssid=00:00:00:00:00:00 reason=3
May  8 21:23:20 tofuschnitzel wpa_supplicant[5513]: wlan0: CTRL-EVENT-DISCONNECTED bssid=00:3a:9d:b4:54:5a reason=2


My feeling is also that things like
wpa_supplicant[5513]: wlan0: WPA: Key negotiation completed with 00:3a:9d:b4:54:5a [PTK=CCMP GTK=CCMP]
have a strong effect on the actual connection.


4) conclusion
=============

in the current state, that is release 3.9.0, but the same happened
in earlier kernels, this driver and/or NM is completely useless
at times. At times it just works, at times it does nothing.
In this case, now the 5th day in series ...


Norbert

------------------------------------------------------------------------
PREINING, Norbert                               http://www.preining.info
JAIST, Japan                                 TeX Live & Debian Developer
DSA: 0x09C5B094   fp: 14DF 2E6C 0307 BE6D AD76  A9C0 D2BF 4AA3 09C5 B094
------------------------------------------------------------------------