Unable to detect wifi networks in ubuntu 16.04 Realtek Semiconductor RTL8723DE device issue, their is a check mark on Enable wifi but no wifi networks

Question

I am facing problem in detecting wifi networks, I have already gone through all the steps explained in Realtek Semiconductor RTL8723de device d723 issue. It helped and their is a check mark on enable wifi at the top right corner, but the laptop is unable to detect any network.

Kindly Help I will be greatful to you.

Did you try the ant_sel parameter? See the end of this answer: https://askubuntu.com/questions/983251/realtek-semiconductor-rtl8723de-device-d723-issue — chili555, Jul 10 '19 at 14:45
Both =1 and =2 with no improvement? If yes, then check here: https://askubuntu.com/questions/425155/my-wireless-wifi-connection-does-not-work-what-information-is-needed-to-diagnos/425180#425180 Paste the result here and give us the link: http://paste.ubuntu.com — chili555, Jul 10 '19 at 14:53
"To connect to raw.githubusercontent.com insecurely, use --no-check-certificate." Please do: `wget -N -t 5 -T 10 --no-check-certificate https://github.com/UbuntuForums/wireless-info/raw/master/wireless-info && chmod +x wireless-info && ./wireless-info — chili555, Jul 10 '19 at 15:07
done! here is the link https://paste.ubuntu.com/p/qNgdJ6W5t9/ — Mayur Paunipagar, Jul 10 '19 at 15:09
"Results saved in /home/mayur/wireless-info.txt". <--That is what we need pasted. Running the script is trivial; seeing the results of running the script is where the useful information lies. — chili555, Jul 10 '19 at 15:12
Ok done! Here is the link https://paste.ubuntu.com/p/7pGMCv5QFv/ — Mayur Paunipagar, Jul 10 '19 at 15:14
You have a file: /etc/modprobe.d/rtl8723de.conf which says: options rtl8723de ant_sel=3 3 is not an available option. Please change it to 2, reboot and tell me if the device now scans: sudo iwlist wlo1 scanAlso let us see:dmesg | grep rtl` All at: http://paste.ubuntu.com Please reboot with the ethernet temporarily disconnected so that Network Manager doesn't default to ethernet. — chili555, Jul 10 '19 at 15:18
Everything what you said is here. https://paste.ubuntu.com/p/J4fthWMXJ8/ — Mayur Paunipagar, Jul 10 '19 at 15:36
And Yes, I made ethernet connection temporarily off, It was unable to scan the networks. even after selecting antenna two. Here is the wireless-info.txt updated file https://paste.ubuntu.com/p/2f3gjS3mcR/ — Mayur Paunipagar, Jul 10 '19 at 15:46

chili555 · Accepted Answer · 2019-07-10T16:12:09.153

1

In your paste, we see:

rtl8723de 0000:03:00.0: Direct firmware load for rtlwifi/rtl8723defw.bin failed with error -2

Let's install the needed firmware and reboot. From the terminal:

cd /lib/firmware/rtlwifi
sudo wget --no-check-certificate https://github.com/lwfinger/rtlwifi_new/raw/extended/firmware/rtlwifi/rtl8723defw.bin

Reboot and tell us if the wireless is working.

edited Jul 10 '19 at 16:12

answered Jul 10 '19 at 15:57

chili555

60,188

firmware not installed I think. Please check https://paste.ubuntu.com/p/nmJ3mr3PPP/ – Mayur Paunipagar Jul 10 '19 at 16:04
Please see my edit above in a few moments. – chili555 Jul 10 '19 at 16:11
YeSSSS!!!!!!, Now its working Thankyou so much – Mayur Paunipagar Jul 10 '19 at 16:19
Woo hoo! Glad it's working! Have fun. – chili555 Jul 10 '19 at 16:20

Unable to detect wifi networks in ubuntu 16.04 Realtek Semiconductor RTL8723DE device issue, their is a check mark on Enable wifi but no wifi networks

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