This question already has an answer here:

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]

marked as duplicate by David Foerster, Eric Carvalho, karel, Charles Green, Fabby Dec 28 '17 at 11:44

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

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.

  • 2
    Great man!!! You saved my life... I've just bought a new laptop and my wifi not working. I'm trying to make it work from 2 days and now you made it... Thanks a lot!! – Jay Patel Jan 22 at 18:36
  • 1
    @GAD3R how do i upgrade to kernel 4.11 – Kenneth Toppo Feb 10 at 16:35
  • 1
    Working perfectly but getting uninstalled whenever i got ubuntu update. – Nitish Kumar Diwakar Mar 20 at 14:31
  • 1
    Simply Great !! – ice spirit Mar 30 at 4:45
  • 1
    @GAD3R thanks a lot! The first set of instructions worked for me – Eddy Apr 7 at 8:11

This device Network controller: Realtek Semiconductor Co., Ltd. Device d723 is not supported by Linux yet.

It is rtl8723de. There are no vendor drivers either.

  • 3
    iwfiger say it will be available in 3 month : The driver for RTL8723DE will be ready on 2017 Q4 – GAD3R Oct 2 '17 at 14:04
  • 1
    We are in 2017, but Q4 just started 2 days ago. – Pilot6 Oct 3 '17 at 12:57
  • 1
    Why do you cal him iwfinger? He is lwfinger. Larry W. Finger. – Pilot6 Oct 3 '17 at 13:03
  • 1
    @Pilot6 The driver is ready here github.com/smlinux/rtl8723de , a kernel version >= 4.11 is required . – GAD3R Dec 22 '17 at 19:39
  • 1
    @GAD3R So why not write a good answer with installation directions? – Pilot6 Dec 23 '17 at 10:11

An unofficial Linux driver is available https://github.com/smlinux/rtl8723de. You have to compile module using make. Then, install, 8723de module.

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