Public bug reported:
Background information:
I'm investigating problems with suspend from resume and my wifi driver
rtl8723be. For this I added my wifi module to SUSPEND_MODULES in
/etc/pm/config.d/modules. What I noticed is that after reloading of the module
on suspend, wpa_supplicant is not able to associate with the network.
To identify the reason of this bug I stopped network-manager and started
wpa_supplicant from the terminal:
$ sudo wpa_supplicant -dd -i wlan0 -c wpa.conf
Log of successful association with network is attached
(wpa_supplicant_connect.log)
Then I unloaded the wifi driver:
$ sudo modprobe -rv rtl8723be
Log of the following disconnect is attached
(wpa_supplicant_disconnect_after_unload.log)
Then I reloaded the wifi driver:
$ sudo modprobe -v rtl8723be
Log of failing wpa_supplicant is attached
(wpa_supplicant_fails_after_reload.log)
After stopping wpa_supplicant and restarting it, it successfully
associates with the network again.
Note that this is independent of the used wifi driver, as I was able to
reproduce the problem on another machine with iwlwifi too.
Installing version 2.3 of wpasupplicant didn't help.
$ lsb_release -rd
Description: Ubuntu 14.10
Release: 14.10
$ apt-cache policy wpasupplicant
wpasupplicant:
Installed: 2.3-1
Candidate: 2.3-1
Version table:
*** 2.3-1 0
100 /var/lib/dpkg/status
2.1-0ubuntu4 0
500 http://archive.ubuntu.com/ubuntu/ utopic/main amd64 Packages
** Affects: bcmwl (Ubuntu)
Importance: Undecided
Status: New
** Tags: wifi wpasupplicant
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https://bugs.launchpad.net/bugs/1414972
Title:
wpa_supplicant does not reassociate after reloading wifi driver
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