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Thread: Switching off bluetooth blocks wifi authentication in hp laptop

  1. #1
    Join Date
    Apr 2005
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    35

    Switching off bluetooth blocks wifi authentication in hp laptop

    I have a touchsmart tm2 1090 laptop with builtin bluetooth and wifi adapter (intel N1000) with Ubuntu 12.10

    I cannot switch off bluetooth

    If I do that, then the wifi stays on, I can see networks around, but cannot authenticate to my router.

    Somehow the authentication does not go through

    I get asked on and on the authentication password, but it never logs in

    I have no Idea what that could be.

    In ubuntu 10.04 I could switch off bluetooth, but wlan kept on working properly.

    Since later releases I cannot do that anymore.
    Last edited by catarano; March 23rd, 2013 at 11:33 PM.

  2. #2
    Join Date
    May 2010
    Location
    Tewkesbury uk
    Beans
    7,799
    Distro
    Ubuntu Development Release

    Re: Switching off bluetooth blocks wifi authentication in hp laptop

    Hi

    Enable bluetooth so you cannot connect to the wifi network, open a terminal and type

    Code:
    sudo service bluetooth stop
    Does this disconnect you from the network ? Can you still connect to the network ?

    Start bluetooth again using

    Code:
    sudo service bluetooth start
    When you cannot connect to the wifi network, open a terminal and type

    Code:
    sudo rfkill list all
    Post the results back here.

    You may have to install rfkill with

    Code:
    sudo apt-get install rfkill
    Kind regards
    If you believe everything you read, you better not read. ~ Japanese Proverb

    If you don't read the newspaper, you're uninformed. If you read the newspaper, you're mis-informed. - Mark Twain

  3. #3
    Join Date
    Apr 2005
    Beans
    35

    [solved] Re: Switching off bluetooth blocks wifi authentication in hp laptop

    this is what happens

    Code:
    ~ $ sudo service bluetooth stop
    bluetooth stop/waiting
    still the bluetooth applet is lightened up, like bluetooth is still on
    but, if I open the bluetooth settings from gnome control center, bluetooth is shown to be off
    in this situation the network works normally
    if in this situation I test with rfkill I get

    Code:
    ~ $ rfkill list all
    1: phy0: Wireless LAN
    	Soft blocked: no
    	Hard blocked: no
    2: hp-wifi: Wireless LAN
    	Soft blocked: no
    	Hard blocked: no
    3: hp-bluetooth: Bluetooth
    	Soft blocked: no
    	Hard blocked: no
    4: hci0: Bluetooth
    	Soft blocked: no
    	Hard blocked: no
    so from rfkill point of view, bluetooth is still on

    however, if I do
    Code:
    ~ $ rfkill block 4 && rfkill list all
    1: phy0: Wireless LAN
    	Soft blocked: no
    	Hard blocked: no
    2: hp-wifi: Wireless LAN
    	Soft blocked: no
    	Hard blocked: no
    3: hp-bluetooth: Bluetooth
    	Soft blocked: no
    	Hard blocked: no
    4: hci0: Bluetooth
    	Soft blocked: yes
    	Hard blocked: no
    the bluetooth applet gets dimmed and it reports that bluetooth is off, as well as in control settings
    in this situation the network works

    instead, if I switch off bluetooth directly from the applet or I do
    Code:
    rfkill block 3
    the wifi led blinks for a while, then it goes to white, like wifi is supposed to be on and I get the authentication problem mentioned in the first post
    and the network does not work.

    so the question is if bluetooth is really off when I give rfkill to block hci0

    after stopping the service and blocking hci0 I tried to launch blueman and got the following

    Bluez daemon is not running, blueman-manager cannot continue.
    This probably means that there were no Bluetooth adapters detected or Bluetooth daemon was not started.
    so it seems to have worked
    also because if I scan around for bluetooth devices with my smartphone I cannot detect my laptop

    it seems however, for my laptop, the bluetooth applet switches off the wrong device
    should I file a bug for it?
    another option would be to have a script that blocks hci0 at startup, the problem is that with rfkill devices change continuously number....

    Thanks a lot

  4. #4
    Join Date
    May 2010
    Location
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    7,799
    Distro
    Ubuntu Development Release

    Re: Switching off bluetooth blocks wifi authentication in hp laptop

    Hi

    so from rfkill point of view, bluetooth is still on
    If you stop the Bluetooth daemon then Bluetooth is not running even if it is not soft blocked by using rfkill.

    so from rfkill point of view, bluetooth is still on
    You can disble wifi networking without blocking wifi using rfkill. The same is true of Bluetooth.

    instead, if I switch off bluetooth directly from the applet or I do...
    Hmm. Disabling Bluetooth should not disable wifi i don't think. It certainly does not do that on my laptop.

    However, my laptop is not a HP lappy and does not use an vendor specific kernel module for wifi and Bluetooth like yours does.

    If you unload the HP kernel module (i assume it's using a HP specific kernel module) do you still get wifi and Bluetooth access and, if you disable Bluetooth, do you still get wifi access ?

    Also can you post the output of

    Code:
    cat /proc/cmdline
    and

    Code:
    lsmod | grep hp
    Kind regards
    Last edited by matt_symes; March 24th, 2013 at 02:34 PM.
    If you believe everything you read, you better not read. ~ Japanese Proverb

    If you don't read the newspaper, you're uninformed. If you read the newspaper, you're mis-informed. - Mark Twain

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