Ubuntu – Cannot see the wifi [10ec:d723] when trying Ubuntu

realtek-wirelesssystem-installationwireless

I am having an issue with wifi; it seems when I'm trying Ubuntu without installing, it only detects connection via the ethernet cable.

I can't connect and none of the available wifi networks are detected.

$ lspci
00:00.0 Host bridge: Intel Corporation Device 5904 (rev 02)
00:02.0 VGA compatible controller: Intel Corporation Device 5916 (rev 02)
00:04.0 Signal processing controller: Intel Corporation Skylake Processor Thermal Subsystem (rev 02)
00:08.0 System peripheral: Intel Corporation Sky Lake Gaussian Mixture Model
00:14.0 USB controller: Intel Corporation Sunrise Point-LP USB 3.0 xHCI Controller (rev 21)
00:14.2 Signal processing controller: Intel Corporation Sunrise Point-LP Thermal subsystem (rev 21)
00:16.0 Communication controller: Intel Corporation Sunrise Point-LP CSME HECI (rev 21)
00:17.0 SATA controller: Intel Corporation Sunrise Point-LP SATA Controller [AHCI mode] (rev 21)
00:1c.0 PCI bridge: Intel Corporation Device 9d10 (rev f1)
00:1c.4 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port (rev f1)
00:1c.5 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port (rev f1)
00:1f.0 ISA bridge: Intel Corporation Device 9d4e (rev 21)
00:1f.2 Memory controller: Intel Corporation Sunrise Point-LP PMC (rev 21)
00:1f.3 Audio device: Intel Corporation Device 9d71 (rev 21)
00:1f.4 SMBus: Intel Corporation Sunrise Point-LP SMBus (rev 21)
01:00.0 Display controller: Advanced Micro Devices, Inc. [AMD/ATI] Sun XT [Radeon HD 8670A/8670M/8690M / R5 M330] (rev 83)
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 15)
03:00.0 Network controller: Realtek Semiconductor Co., Ltd. Device d723

$ lspci -knn | grep Net -A3
03:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. Device [10ec:d723]
    DeviceName: Hanksville Gbe Lan Connection
    Subsystem: Hewlett-Packard Company Device [103c:8319]

Best Answer

  • A linux driver is available on smlinux/rtl8723de

    Requirements :

    A linux kernel >= 4.11

    The appropriate linux-headers to your kernel version should be installed.

    git clone https://github.com/smlinux/rtl8723de
    cd rtl8723de
    make 
    sudo make install
    sudo modprobe -v 8723de
    

    The dkms way (the instructions from the developer's driver):

    git clone https://github.com/smlinux/rtl8723.git -b 4.11-up
    sudo dkms add ./rtl8723de
    sudo dkms install rtl8723de/5.1.1.8_21285.20171026_COEX20170111-1414
    sudo depmod -a
    sudo reboot
    

    Update:

    To install a kernel version greater than 4.11 you can use the ukuu tool.

    sudo apt-add-repository -y ppa:teejee2008/ppa
    sudo apt-get update
    sudo apt-get install ukuu
    

    To list the available kernel version:

    sudo ukuu --list
    

    To install a specific kernel version (e.g: 4.11.12):

    sudo ukuu --install v4.11.12
    

    See ukuu --help.

    Ubuntu wiki : To install a mailine kernel with the appropriate linux-headers package.

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