Wifi not working in Ubuntu 16.04 realtek

Question

The wifi was working properly and now it doesn’t seem to work or stopped working itself. Here is the output of few commands

$ sudo lshw -class network
  *-network               
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:01:00.0
       logical name: eno1
       version: 15
       serial: 80:ce:62:10:82:02
       size: 100Mbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl8168h-2_0.0.2 02/26/15 ip=192.168.0.103 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s
       resources: irq:16 ioport:4000(size=256) memory:b1104000-b1104fff memory:b1100000-b1103fff
  *-network UNCLAIMED
       description: Network controller
       product: Realtek Semiconductor Co., Ltd.
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:02:00.0
       version: 00
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress cap_list
       configuration: latency=0
       resources: ioport:3000(size=256) memory:b1000000-b100ffff

$ lspci -knn | grep Net -A3; rfkill list
02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. Device [10ec:d723]
    DeviceName: WLAN
    Subsystem: Hewlett-Packard Company Device [103c:8319]
    Kernel modules: wl
0: hci0: Bluetooth
    Soft blocked: yes
    Hard blocked: no

Tried this too:

$ sudo apt install build-essential dkms git
Reading package lists... Done
Building dependency tree       
Reading state information... Done
build-essential is already the newest version (12.1ubuntu2).
dkms is already the newest version (2.2.0.3-2ubuntu11.5).
git is already the newest version (1:2.7.4-0ubuntu1.5).
The following packages were automatically installed and are no longer required:
  linux-headers-4.13.0-37 linux-headers-4.13.0-37-generic
  linux-headers-4.13.0-43 linux-headers-4.13.0-43-generic
  linux-headers-4.13.0-45 linux-headers-4.13.0-45-generic
  linux-headers-4.15.0-30 linux-headers-4.15.0-30-generic
  linux-headers-4.15.0-32 linux-headers-4.15.0-32-generic
  linux-headers-4.15.0-33 linux-headers-4.15.0-33-generic
  linux-image-4.13.0-37-generic linux-image-4.13.0-43-generic
  linux-image-4.13.0-45-generic linux-image-4.15.0-30-generic
  linux-image-4.15.0-32-generic linux-image-4.15.0-33-generic
  linux-image-extra-4.13.0-37-generic linux-image-extra-4.13.0-43-generic
  linux-image-extra-4.13.0-45-generic linux-modules-4.15.0-30-generic
  linux-modules-4.15.0-32-generic linux-modules-4.15.0-33-generic
  linux-modules-extra-4.15.0-30-generic linux-modules-extra-4.15.0-32-generic
  linux-modules-extra-4.15.0-33-generic linux-signed-image-4.13.0-37-generic
  linux-signed-image-4.13.0-43-generic linux-signed-image-4.13.0-45-generic
  linux-signed-image-generic-hwe-16.04
Use 'sudo apt autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 47 not upgraded.
$ git clone https://github.com/jeremyb31/rtl8723de.git
fatal: destination path 'rtl8723de' already exists and is not an empty directory.
$ sudo dkms add ./rtl8723de
Error! DKMS tree already contains: rtl8723de-5.1.1.8_21285.20171026_COEX20170111-1414
You cannot add the same module/version combo more than once.
$ sudo dkms build rtl8723de/5.1.1.8_21285.20171026_COEX20170111-1414

Kernel preparation unnecessary for this kernel.  Skipping...

Building module:
cleaning build area....
'make' all KVER=4.15.0-36-generic......(bad exit status: 2)
ERROR (dkms apport): binary package for rtl8723de: 5.1.1.8_21285.20171026_COEX20170111-1414 not found
Error! Bad return status for module build on kernel: 4.15.0-36-generic (x86_64)
Consult /var/lib/dkms/rtl8723de/5.1.1.8_21285.20171026_COEX20170111-1414/build/make.log for more information.
nishanthr@vision:~$ sudo dkms install rtl8723de/5.1.1.8_21285.20171026_COEX20170111-1414

Kernel preparation unnecessary for this kernel.  Skipping...

Building module:
cleaning build area....
'make' all KVER=4.15.0-36-generic....(bad exit status: 2)
ERROR (dkms apport): binary package for rtl8723de: 5.1.1.8_21285.20171026_COEX20170111-1414 not found
Error! Bad return status for module build on kernel: 4.15.0-36-generic (x86_64)
Consult /var/lib/dkms/rtl8723de/5.1.1.8_21285.20171026_COEX20170111-1414/build/make.log for more information.

Also tried this Larry Finger's:

$ sudo apt install git dkms
[sudo] password for nishanthr: 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
dkms is already the newest version (2.2.0.3-2ubuntu11.5).
git is already the newest version (1:2.7.4-0ubuntu1.5).
The following packages were automatically installed and are no longer required:
  linux-headers-4.13.0-37 linux-headers-4.13.0-37-generic
  linux-headers-4.13.0-43 linux-headers-4.13.0-43-generic
  linux-headers-4.13.0-45 linux-headers-4.13.0-45-generic
  linux-headers-4.15.0-30 linux-headers-4.15.0-30-generic
  linux-headers-4.15.0-32 linux-headers-4.15.0-32-generic
  linux-headers-4.15.0-33 linux-headers-4.15.0-33-generic
  linux-image-4.13.0-37-generic linux-image-4.13.0-43-generic
  linux-image-4.13.0-45-generic linux-image-4.15.0-30-generic
  linux-image-4.15.0-32-generic linux-image-4.15.0-33-generic
  linux-image-extra-4.13.0-37-generic linux-image-extra-4.13.0-43-generic
  linux-image-extra-4.13.0-45-generic linux-modules-4.15.0-30-generic
  linux-modules-4.15.0-32-generic linux-modules-4.15.0-33-generic
  linux-modules-extra-4.15.0-30-generic linux-modules-extra-4.15.0-32-generic
  linux-modules-extra-4.15.0-33-generic linux-signed-image-4.13.0-37-generic
  linux-signed-image-4.13.0-43-generic linux-signed-image-4.13.0-45-generic
  linux-signed-image-generic-hwe-16.04
Use 'sudo apt autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 47 not upgraded.
$ git clone -b extended --single-branch https://github.com/lwfinger/rtlwifi_new.git
fatal: destination path 'rtlwifi_new' already exists and is not an empty directory.
$ sudo dkms add rtlwifi_new
Error! DKMS tree already contains: rtlwifi-new-0.6
You cannot add the same module/version combo more than once.
$ sudo dkms install rtlwifi-new/0.6

Kernel preparation unnecessary for this kernel.  Skipping...

Building module:
cleaning build area....(bad exit status: 2)
make KERNELRELEASE=4.15.0-36-generic -C /lib/modules/4.15.0-36-generic/build M=/var/lib/dkms/rtlwifi-new/0.6/build....(bad exit status: 2)
ERROR (dkms apport): binary package for rtlwifi-new: 0.6 not found
Error! Bad return status for module build on kernel: 4.15.0-36-generic (x86_64)
Consult /var/lib/dkms/rtlwifi-new/0.6/build/make.log for more information.

Please help, any more command outputs you need I'll add.

I have edited my answer including the output of the above command. — Nishanth R, Oct 23 '18 at 12:36
I have no idea ,when I tried this it the output was that the package already exists — Nishanth R, Oct 23 '18 at 12:48
You have kernel v4.15.0-36 and the solution you tried won't work because of the new kernel incompatibility. You should try the answer applicable to the kernel you have. — pomsky, Oct 23 '18 at 13:01
I did try answer applicable to the kernel version looking t the comments in that answer and these were the outcomes and the problem still persists. — Nishanth R, Oct 23 '18 at 13:05
I have added Larry Finger's modules outcomes in the question now — Nishanth R, Oct 23 '18 at 13:09
You need to clean up the residues of your previous adventures before trying to install another module. — pomsky, Oct 23 '18 at 13:12
dkms status will give you installed modules, you can remove using dkms remove. Refer to this first: https://askubuntu.com/questions/408605/what-does-dkms-do-how-do-i-use-it and also man dkms. — pomsky, Oct 23 '18 at 13:23

Wifi not working in Ubuntu 16.04 realtek

0 Answers0