Hier ist mein Problem:

openSUSE 13.1 KDE, 2013-12-17 03:00 UTC mit allen Updates einschl. plasmoid-networkmanagement, NetworkManager-vpnc-kde4, NetworkManager-pptp-kde4, NetworkManager-openvpn-kde4, NetworkManager-kde4-libs-lang, NetworkManager-kde4-libs in der Version 0.9.0.10)
Acer Aspire 4755G
WLAN chip Broadcom BCM43227
Driver broadcom-wl 6.30.223.141-2.6 einschl. broadcom-wl-kmp-desktop (passend zum Kernel)

Das WLAN-Netzwerk wird meist erkannt, relativ oft aber auch nicht.

Einrichten der Netzwerkverbindung:
SSID: taken from scan
Mode: infrastructure
BSSID: with select
Restrict to interface: any
Cloned MAC address: with random
MTU automatic
Password wird eingegeben ("in file "unencrypted)")

Beim Konfigurieren fragt der KDE-daemon in kurzen Abständen wiederholt nach dem WLAN-Password, eine Verbindung wird nicht hergestellt.

Networkmanager log:

2013-12-17T14:21:53.221999+08:00 linux-yjei NetworkManager[897]: <info> (wlp3s0): supplicant interface state: inactive -> disconnected
2013-12-17T14:22:03.157804+08:00 linux-yjei NetworkManager[897]: <info> Auto-activating connection 'WLAN-2013'.
2013-12-17T14:22:03.158256+08:00 linux-yjei NetworkManager[897]: <info> Activation (wlp3s0) starting connection 'WLAN-2013'
2013-12-17T14:22:03.158581+08:00 linux-yjei NetworkManager[897]: <info> (wlp3s0): device state change: disconnected -> prepare (reason 'none') [30 40 0]
2013-12-17T14:22:03.158910+08:00 linux-yjei NetworkManager[897]: <info> NetworkManager state is now CONNECTING
2013-12-17T14:22:03.159556+08:00 linux-yjei NetworkManager[897]: <info> Activation (wlp3s0) Stage 1 of 5 (Device Prepare) scheduled...
2013-12-17T14:22:03.160048+08:00 linux-yjei NetworkManager[897]: <info> Activation (wlp3s0) Stage 1 of 5 (Device Prepare) started...
2013-12-17T14:22:03.160678+08:00 linux-yjei NetworkManager[897]: <info> (wlp3s0): taking down device.
2013-12-17T14:22:03.163069+08:00 linux-yjei NetworkManager[897]: <warn> (wlp3s0): failed to change interface MAC address
2013-12-17T14:22:03.163806+08:00 linux-yjei NetworkManager[897]: <warn> (wlp3s0): failed to set MAC address to 25:37:2D:57:36:38
2013-12-17T14:22:03.164328+08:00 linux-yjei NetworkManager[897]: <info> Activation (wlp3s0) Stage 2 of 5 (Device Configure) scheduled...
2013-12-17T14:22:03.164788+08:00 linux-yjei NetworkManager[897]: <info> Activation (wlp3s0) Stage 1 of 5 (Device Prepare) complete.
2013-12-17T14:22:03.166629+08:00 linux-yjei NetworkManager[897]: <info> Activation (wlp3s0) Stage 2 of 5 (Device Configure) starting...
2013-12-17T14:22:03.167331+08:00 linux-yjei NetworkManager[897]: <info> (wlp3s0): device state change: prepare -> config (reason 'none') [40 50 0]
2013-12-17T14:22:03.167891+08:00 linux-yjei NetworkManager[897]: <info> Activation (wlp3s0/wireless): connection 'WLAN-2013' has security, and secrets exist. No new secrets needed.
2013-12-17T14:22:03.168420+08:00 linux-yjei NetworkManager[897]: <info> Config: added 'ssid' value 'WLAN-2013'
2013-12-17T14:22:03.168958+08:00 linux-yjei NetworkManager[897]: <info> Config: added 'scan_ssid' value '1'
2013-12-17T14:22:03.169466+08:00 linux-yjei NetworkManager[897]: <info> Config: added 'bssid' value '00:19:5b:dd:b8:7a'
2013-12-17T14:22:03.170005+08:00 linux-yjei NetworkManager[897]: <info> Config: added 'key_mgmt' value 'WPA-PSK'
2013-12-17T14:22:03.170539+08:00 linux-yjei NetworkManager[897]: <info> Config: added 'psk' value '<omitted>'
2013-12-17T14:22:03.171018+08:00 linux-yjei NetworkManager[897]: <info> Activation (wlp3s0) Stage 2 of 5 (Device Configure) complete.
2013-12-17T14:22:03.171909+08:00 linux-yjei NetworkManager[897]: <info> Config: set interface ap_scan to 1
2013-12-17T14:22:03.192086+08:00 linux-yjei NetworkManager[897]: <info> (wlp3s0): supplicant interface state: disconnected -> inactive
2013-12-17T14:22:03.197837+08:00 linux-yjei NetworkManager[897]: <info> (wlp3s0): supplicant interface state: inactive -> scanning
2013-12-17T14:22:04.315821+08:00 linux-yjei NetworkManager[897]: <info> (wlp3s0): supplicant interface state: scanning -> associating
2013-12-17T14:22:04.316421+08:00 linux-yjei NetworkManager[897]: <info> (wlp3s0): supplicant interface state: associating -> associated
2013-12-17T14:22:04.488137+08:00 linux-yjei NetworkManager[897]: <info> (wlp3s0): supplicant interface state: associated -> 4-way handshake
2013-12-17T14:22:07.821879+08:00 linux-yjei NetworkManager[897]: <info> (wlp3s0): supplicant interface state: 4-way handshake -> disconnected
2013-12-17T14:22:07.822364+08:00 linux-yjei NetworkManager[897]: <info> Activation (wlp3s0/wireless): disconnected during association, asking for new key.
2013-12-17T14:22:07.822682+08:00 linux-yjei NetworkManager[897]: <info> (wlp3s0): device state change: config -> need-auth (reason 'supplicant-disconnect') [50 60 8]
2013-12-17T14:22:07.921487+08:00 linux-yjei NetworkManager[897]: <info> (wlp3s0): supplicant interface state: disconnected -> inactive
2013-12-17T14:22:09.472917+08:00 linux-yjei NetworkManager[897]: <info> Activation (wlp3s0) Stage 1 of 5 (Device Prepare) scheduled...
2013-12-17T14:22:09.473484+08:00 linux-yjei NetworkManager[897]: <info> Activation (wlp3s0) Stage 1 of 5 (Device Prepare) started...
2013-12-17T14:22:09.473914+08:00 linux-yjei NetworkManager[897]: <info> (wlp3s0): device state change: need-auth -> prepare (reason 'none') [60 40 0]
2013-12-17T14:22:09.474377+08:00 linux-yjei NetworkManager[897]: <info> Activation (wlp3s0) Stage 2 of 5 (Device Configure) scheduled...
2013-12-17T14:22:09.474830+08:00 linux-yjei NetworkManager[897]: <info> Activation (wlp3s0) Stage 1 of 5 (Device Prepare) complete.
2013-12-17T14:22:09.475304+08:00 linux-yjei NetworkManager[897]: <info> Activation (wlp3s0) Stage 2 of 5 (Device Configure) starting...
2013-12-17T14:22:09.475782+08:00 linux-yjei NetworkManager[897]: <info> (wlp3s0): device state change: prepare -> config (reason 'none') [40 50 0]
2013-12-17T14:22:09.476229+08:00 linux-yjei NetworkManager[897]: <info> Activation (wlp3s0/wireless): connection 'WLAN-2013' has security, and secrets exist. No new secrets needed.


Herumspielen mit den Einstellungen hat nichts gebracht.
Installieren von b43-firmware brachte auch nichts.

Ausnahme:
Die Verbindung wird hergestellt. Das passierte bisher viermal seit dem 12.12.

Network manager log:

2013-12-16T19:36:29.895746+08:00 linux NetworkManager[902]: <info> (wlp3s0): supplicant interface state: inactive -> disconnected
2013-12-16T19:36:38.430872+08:00 linux NetworkManager[902]: <info> Auto-activating connection 'WLAN-2013'.
2013-12-16T19:36:38.431350+08:00 linux NetworkManager[902]: <info> Activation (wlp3s0) starting connection 'WLAN-2013'
2013-12-16T19:36:38.431777+08:00 linux NetworkManager[902]: <info> (wlp3s0): device state change: disconnected -> prepare (reason 'none') [30 40 0]
2013-12-16T19:36:38.432120+08:00 linux NetworkManager[902]: <info> NetworkManager state is now CONNECTING
2013-12-16T19:36:38.432457+08:00 linux NetworkManager[902]: <info> Activation (wlp3s0) Stage 1 of 5 (Device Prepare) scheduled...
2013-12-16T19:36:38.432797+08:00 linux NetworkManager[902]: <info> Activation (wlp3s0) Stage 1 of 5 (Device Prepare) started...
2013-12-16T19:36:38.433145+08:00 linux NetworkManager[902]: <info> Activation (wlp3s0) Stage 2 of 5 (Device Configure) scheduled...
2013-12-16T19:36:38.433476+08:00 linux NetworkManager[902]: <info> Activation (wlp3s0) Stage 1 of 5 (Device Prepare) complete.
2013-12-16T19:36:38.433803+08:00 linux NetworkManager[902]: <info> Activation (wlp3s0) Stage 2 of 5 (Device Configure) starting...
2013-12-16T19:36:38.434140+08:00 linux NetworkManager[902]: <info> (wlp3s0): device state change: prepare -> config (reason 'none') [40 50 0]
2013-12-16T19:36:38.434485+08:00 linux NetworkManager[902]: <info> Activation (wlp3s0/wireless): connection 'WLAN-2013' has security, and secrets exist. No new secrets needed.
2013-12-16T19:36:38.436830+08:00 linux NetworkManager[902]: <info> Config: added 'psk' value '<omitted>'
2013-12-16T19:36:38.437105+08:00 linux NetworkManager[902]: <info> Activation (wlp3s0) Stage 2 of 5 (Device Configure) complete.
2013-12-16T19:36:38.439982+08:00 linux NetworkManager[902]: <info> Config: set interface ap_scan to 1
2013-12-16T19:36:38.462101+08:00 linux NetworkManager[902]: <info> (wlp3s0): supplicant interface state: disconnected -> scanning
2013-12-16T19:36:39.476032+08:00 linux NetworkManager[902]: <info> (wlp3s0): supplicant interface state: scanning -> associating
2013-12-16T19:36:39.610857+08:00 linux NetworkManager[902]: <info> (wlp3s0): supplicant interface state: associating -> associated
2013-12-16T19:36:39.786852+08:00 linux NetworkManager[902]: <info> (wlp3s0): supplicant interface state: associated -> 4-way handshake
2013-12-16T19:36:39.816492+08:00 linux NetworkManager[902]: <info> (wlp3s0): supplicant interface state: 4-way handshake -> completed
2013-12-16T19:36:39.816923+08:00 linux NetworkManager[902]: <info> Activation (wlp3s0/wireless) Stage 2 of 5 (Device Configure) successful. Connected to wireless network 'WLAN-2013'.
2013-12-16T19:36:39.817212+08:00 linux NetworkManager[902]: <info> Activation (wlp3s0) Stage 3 of 5 (IP Configure Start) scheduled.
2013-12-16T19:36:39.817470+08:00 linux NetworkManager[902]: <info> Activation (wlp3s0) Stage 3 of 5 (IP Configure Start) started...
2013-12-16T19:36:39.817713+08:00 linux NetworkManager[902]: <info> (wlp3s0): device state change: config -> ip-config (reason 'none') [50 70 0]
2013-12-16T19:36:39.847419+08:00 linux NetworkManager[902]: <info> Activation (wlp3s0) Beginning DHCPv4 transaction (timeout in 45 seconds)
2013-12-16T19:36:39.877868+08:00 linux NetworkManager[902]: <info> dhclient started with pid 7118
2013-12-16T19:36:40.033798+08:00 linux NetworkManager[902]: <info> Activation (wlp3s0) Stage 3 of 5 (IP Configure Start) complete.
2013-12-16T19:36:40.067787+08:00 linux NetworkManager[902]: <info> (wlp3s0): DHCPv4 state changed nbi -> preinit
2013-12-16T19:36:40.318145+08:00 linux NetworkManager[902]: <info> (wlp3s0): DHCPv4 state changed preinit -> reboot
2013-12-16T19:36:40.318442+08:00 linux NetworkManager[902]: <info> address 192.168.0.118
2013-12-16T19:36:40.318676+08:00 linux NetworkManager[902]: <info> prefix 24 (255.255.255.0)
2013-12-16T19:36:40.318891+08:00 linux NetworkManager[902]: <info> gateway 192.168.0.1
2013-12-16T19:36:40.319108+08:00 linux NetworkManager[902]: <info> nameserver '192.168.1.1'
2013-12-16T19:36:40.319322+08:00 linux NetworkManager[902]: <info> nameserver '192.168.0.1'
2013-12-16T19:36:40.319542+08:00 linux NetworkManager[902]: <info> domain name 'domain.name'
2013-12-16T19:36:40.319797+08:00 linux NetworkManager[902]: <info> Activation (wlp3s0) Stage 5 of 5 (IPv4 Configure Commit) scheduled...
2013-12-16T19:36:40.320016+08:00 linux NetworkManager[902]: <info> Activation (wlp3s0) Stage 5 of 5 (IPv4 Commit) started...
2013-12-16T19:36:41.320120+08:00 linux NetworkManager[902]: <info> (wlp3s0): device state change: ip-config -> secondaries (reason 'none') [70 90 0]
2013-12-16T19:36:41.320571+08:00 linux NetworkManager[902]: <info> Activation (wlp3s0) Stage 5 of 5 (IPv4 Commit) complete.
2013-12-16T19:36:41.320949+08:00 linux NetworkManager[902]: <info> (wlp3s0): device state change: secondaries -> activated (reason 'none') [90 100 0]
2013-12-16T19:36:41.385891+08:00 linux NetworkManager[902]: <info> NetworkManager state is now CONNECTED_GLOBAL
2013-12-16T19:36:41.386342+08:00 linux NetworkManager[902]: <info> Policy set 'WLAN-2013' (wlp3s0) as default for IPv4 routing and DNS.
2013-12-16T19:36:41.389399+08:00 linux NetworkManager[902]: <info> Activation (wlp3s0) successful, device activated.

Der 4-way handshake scheint entscheidend zu sein.

Daneben ist auffällig, wie unzuverlässig das Netzwerk erkannt wird.

Ein Acer-Laptop mit Atheros-WLAN-Chip (ooenSUSE 12.3) verbindet sich mit dem Router problemlos und zuverlässig.