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Wifi adapter not found

asked 2019-02-13 13:52:24 -0500

lonelyDora gravatar image

Hello, I know that this question has been asked too many times but from all the solutions I found, none worked for me, So I just bought a new hp laptop with a wireless network adapter RTL8821CE 802.11ac PCIe, and I immediatly installed fedora 29 however I can't connect to wifi and it shows me that the wifi adapter is not found. I also tried a ubuntu 14.02 live cd but I encountered the same problem.

P.S:I saw in many solutions the need to disable secure boot however for me it's greyed out so I can't change it.

I've been searching for solutions for a long time now, so I would much appreciate it if someone could help me. Best Regards

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answered 2019-02-14 08:55:51 -0500

fooze666 gravatar image

updated 2019-02-14 13:32:54 -0500

The problem is that there are no standard drivers from Realtek for current Linux kernels. I had the same problem with my HP laptop and had to use it with a cable for months. There is a solution on Github that will fix it and have you running on WiFi within a few minutes.

Check to make sure you have kernel development tools installed first:

sudo install kernel-devel

This post on StackExchange explains how to do the rest: https://unix.stackexchange.com/questi...

Note that each time you upgrade your kernel, you'll need to recompile the driver and redo the modprobe command to make the wifi work again.

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Also, if you get bad performance out of the wifi once you have it enabled, check the bottom of the page here: https://github.com/lwfinger/rtlwifi_new

I was getting a 60% signal sitting right next to my router until I found and followed those instructions. Now it works at 98%.

fooze666 gravatar imagefooze666 ( 2019-02-14 08:57:21 -0500 )edit

I have a laptop with Realtek RTL8191SE wireless network adapter and it works fine with Fedora29. No need to install the driver manually.

loboedu gravatar imageloboedu ( 2019-02-14 12:22:03 -0500 )edit

RTL8191SE is not the same thing.

fooze666 gravatar imagefooze666 ( 2019-02-14 13:29:54 -0500 )edit
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answered 2019-02-19 10:27:37 -0500

  • Enable the WiFi service Enable the WiFi service with WiFi switch.

--> Some laptop such as HP, Lenovo, Dell, have a switch on a keyboard to turn ON/OFF WiFi (like fn or f5).

  • Restart your modem or WiFi router

This problem may be due to an Internet Service Provider (ISP).restart your modem or WiFi router.

  • Update WiFi network driver It may also be that your WiFi driver has been outdated, due to which there are problems like this, it is a common problem that can come at any time.

Steps to Update Driver

  1. Press Win+R to open Run command.

  2. Type "devmgmt.msc" (without quotes) and hit enter.

  3. Right click your WiFi network adapter in network adapter section, and click update driver.

Note:- You can also use third party tools to Update driver easily.

  • Check your Network setting
  • Right click the internet icon, and click open network and sharing centre.
  1. Click adapter setting.

  2. Right click WiFi, and click enable.

    Note: - If it is enabled, you will be disabled on right click on WiFi (also referred to for wireless network connection in different computers).

  3. Restart windows and reconnect to WiFi again.

  • Turn on WLAN auto config service WLAN Auto config service (also referred to wireless configuration in windows xp).

Steps to enable it :-

  1. Press Win+R to open run command and type "service.msc" then hit enter.

  2. Right click WLAN Auto config (if you're using windows xp, right click wireless configuration) and click properties.

  3. Select Automatic in startup, then click apply, and click on OK.

  4. Restart your PC or laptop and reconnect to your WiFi network to see if your WiFi shows up.

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answered 2019-02-13 21:33:49 -0500

loboedu gravatar image

The fact that secure boot option at the BIOS screen is greyed, I think, should not be a problem. Can't you set up an administrator (or whatever) password and then change it?

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Asked: 2019-02-13 13:52:24 -0500

Seen: 239 times

Last updated: Feb 14