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Thread: Can't connect to my wireless network

  1. #1
    Join Date
    May 2012
    Beans
    36

    Can't connect to my wireless network

    Greetings,
    I've just bought a new laptop and installed Ubuntu 12.04 in it.
    My problem is that I can make a wired connection but not a wireless one.
    The wireless network is working ok with other computers but not with the new one.
    The new laptop can't detect it.
    Can anyone help me?
    Thank you

  2. #2
    Join Date
    Sep 2012
    Location
    Gnome12o4/14o4
    Beans
    Hidden!

    Re: Can't connect to my wireless network

    Sounds like you need drivers, but can't tell you what drivers since you didn't post what kind of wireless you have.

    http://www.googlubuntu.com/results/?...ch&cof=FORID:9

  3. #3
    Join Date
    May 2012
    Beans
    36

    Re: Can't connect to my wireless network

    On a terminal, typing lspci the output is
    00:00.0 Host bridge: Intel Corporation Ivy Bridge DRAM Controller (rev 09)
    00:02.0 VGA compatible controller: Intel Corporation Ivy Bridge Graphics Controller (rev 09)
    00:14.0 USB controller: Intel Corporation Panther Point USB xHCI Host Controller (rev 04)
    00:16.0 Communication controller: Intel Corporation Panther Point MEI Controller #1 (rev 04)
    00:1a.0 USB controller: Intel Corporation Panther Point USB Enhanced Host Controller #2 (rev 04)
    00:1b.0 Audio device: Intel Corporation Panther Point High Definition Audio Controller (rev 04)
    00:1c.0 PCI bridge: Intel Corporation Panther Point PCI Express Root Port 1 (rev c4)
    00:1c.1 PCI bridge: Intel Corporation Panther Point PCI Express Root Port 2 (rev c4)
    00:1c.2 PCI bridge: Intel Corporation Panther Point PCI Express Root Port 3 (rev c4)
    00:1d.0 USB controller: Intel Corporation Panther Point USB Enhanced Host Controller #1 (rev 04)
    00:1f.0 ISA bridge: Intel Corporation Panther Point LPC Controller (rev 04)
    00:1f.2 SATA controller: Intel Corporation Panther Point 6 port SATA Controller [AHCI mode] (rev 04)
    00:1f.3 SMBus: Intel Corporation Panther Point SMBus Controller (rev 04)
    02:00.0 Network controller: Realtek Semiconductor Co., Ltd. Device 8723
    03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 07)

    Inspecting the drivers installed the one for the Network controller: Realtek Semiconductor Co., Ltd. Device 8723 is not there. How do I do for install it?

  4. #4
    Join Date
    Feb 2008
    Location
    Texas
    Beans
    14,732
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Can't connect to my wireless network

    Thread moved to Networking & Wireless.

  5. #5
    Join Date
    Feb 2008
    Location
    Texas
    Beans
    14,732
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Can't connect to my wireless network

    Hi, copy and paste this command in the terminal (ctrl+alt+t) please:
    Code:
     wget -N -t 5 -T 10 http://dl.dropbox.com/u/57264241/wireless_script && chmod +x wireless_script && ./wireless_script
    It will download a script and create a file named wireless-info.tar.gz or netinfo.txt in your home folder with wireless information so we can see the condition of your wireless at this time and the Mac address, WPA key and WEP key are removed for your security, then reply back, click on the paper clip and attach the wireless-info.tar.gz or netinfo.txt file as a zip file.

    If you do not have ethernet either then follow the directions at this link for running the script without internet.
    http://ubuntuforums.org/showpost.php?p=12350385
    Thanks

  6. #6
    Join Date
    May 2012
    Beans
    36

    Re: Can't connect to my wireless network

    Thank you for your reply.
    Attached Files Attached Files

  7. #7
    Join Date
    Feb 2008
    Location
    Texas
    Beans
    14,732
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Can't connect to my wireless network

    Please do
    Code:
    sudo modprobe rtl8723ae
    Then
    Code:
    modinfo rtl8723ae
    dmesg | grep rtl
    and post the results here.
    Thanks

  8. #8
    Join Date
    May 2012
    Beans
    36

    Re: Can't connect to my wireless network

    On a terminal I've typed
    sudo modprobe rtl8723ae
    and the output was:
    FATAL: Module rtl8723ae not found.

  9. #9
    Join Date
    Feb 2008
    Location
    Texas
    Beans
    14,732
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Can't connect to my wireless network

    I am looking into this, I have been away from my computer, I am checking to see if the driver exixts with your kernel version which I believe the answer is no, but I will get back to you soon.

  10. #10
    Join Date
    Feb 2008
    Location
    Texas
    Beans
    14,732
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Can't connect to my wireless network

    Okay you will have to compile the driver, here are the directions.
    Code:
    sudo apt-get install --reinstall linux-headers-generic linux-headers-$(uname -r) build-essential dkms
    sudo su
    wget -O- http://dl.dropbox.com/u/57056576/DRIVERS/REALTEK/rtl_92ce_92se_92de_8723ae_linux_mac80211_0006.0514.2012.tar.gz | tar -xz
    cd rtl_92ce_92se_92de_8723ae_linux_mac80211_0006.0514.2012
    make
    sudo make install
    sudo modprobe rtl8723e
    When there is an update to the kernel you will have to do:
    Code:
    sudo su
    make clean
    make
    make install
    modprobe rtl8723e
    Thanks
    Last edited by Wild Man; August 6th, 2013 at 12:50 AM.

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