HP 655 - Solution for Problem - WLAN Wireless - Ubuntu

Notebook HP 655
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Problem:
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After Installation of UBUNTU 12.04 LTS 64-bit from DVD
and all Updates via LAN
WLAN (Wireless) did not work even after >enable WLAN or Pressing fn+F12
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When you klick disable in Network-Tray-Icon >Enable WLAN Wireless Network (Soft-Block)
and after that press fn+F12 for trying to enable WLAN, but you really disable it (Hard-Block)
and after that klick enable in Network-Tray-Icon >Enable WLAN Wireless Network (Soft-Unblock)
and after that press fn+F12 for enabling WLAN (Hard-Unblock)
=> even though in the Network-Tray-Icon
        the check mark is visible for enabling >Enable WLAN Wireless Network (Soft-Unblock)
=> this does not work => Light on F12-Key is still orange
and > Terminal > rfkill list => still says:
"
user@HP-655-Linux:~$ rfkill list
0: phy0: Wireless LAN
 Soft blocked: yes
 Hard blocked: no
"
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Solution-1: (which i discovered later)
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> klick disable in Network-Tray-Icon >Enable WLAN Wireless Network (Soft-Block)
> klick enable in Network-Tray-Icon >Enable WLAN Wireless Network (Soft-Unblock)
=> Light on F12-Key turns white
=> Success!
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Solution-2: (which i tried first and worked)
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Start Terminal
> sudo rfkill unblock all
> echo "options hp_wmi wireless=1" | sudo tee /etc/modprobe.d/hp_wmi.conf
Restart of System
=> Success!

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In GERMAN:
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FEHLER! WLAN nicht einschaltbar
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Lösung-1: (später herausgefunden)
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> klicke zum Ausschalten des Häkchens im Netzwerk-Symbol auf > Funknetzwerk aktivieren (Soft-Block)
> klicke zum Einschalten des Häkchens im Netzwerk-Symbol auf > Funknetzwerk aktivieren (Soft-UnBlock)
=>Licht in der F12-Taste wird weiß
=>Erfolg!
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Lösung-2: (zuerst erfolgreich probiert)
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Terminal starten
> sudo rfkill unblock all
> echo "options hp_wmi wireless=1" | sudo tee /etc/modprobe.d/hp_wmi.conf
NEUSTART
=> Erfolg!
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