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I bought an Asus Vivobook F513 laptop which has the MediaTek MT7921 Lan Card.

As soon as I installed Ubuntu 20.04LTS to dual boot with windows, I noticed I didn't had either Wi-Fi or Bluetooth.

After a lot of debugging and googling, I found my kernel version was 5.11, and apparently support to my chipset was only added after version 5.12.

As soon as I updated the kernel with these instructions and disabled Secure Boot on BIOS I got Wi-Fi working fine.

sudo add-apt-repository ppa:cappelikan/ppa
sudo apt update
sudo apt install mainline

Still, the problem with the Bluetooth persisted, when I try to enable it on Ubuntu Settings it just remains disabled.

I reformated the Ubuntu partition and this time I installed Ubuntu 21.10 (Impish Indri) Beta which comes with the 5.13 kernel, but then I updated it to the 5.14.11 version, which I'm currently using. still, no bluetooth.

If I open terminal and type hcitool dev it show's me just Devices: and nothing more.

Instead, if I try to input bluetoothctl and on the next screen show it returns No default controller available.

Last but not least, if I type lspci I get 0000:02:00.0 Network controller: MEDIATEK Corp. Device 7961.

Any thoughts on how to make linux recognize my bluetooth? I've searched everywhere and apparently there's more people with similar issues, I'm now considering returning my laptop that only has a few days because of this.

I also have a usb bluetooth adapter, and as soon as I plug it in it just works.

Thanks!

***** UPDATE *****

Meanwhile I reformated my partiton and installed Ubuntu 20.04.3 LTS for better support, but had to upgrade my kernel version to 5.14.11 in order to get Wi-Fi working, just as mentioned above.

All of the listed commands above still provide the same output, still no bluetooth.

Mário Pereira
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4 Answers4

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That's a kernel level bug, the patches are applied to 5.19 kernel, the bluetooth will work when you receive the 5.19 kernel update. wait till you recieve update or install from backports (if available).

HRC
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It should be supported on the 5.15.X kernel. I was having the same issue with Bluetooth but that fixed it. I can't stay on it right now though because I can't seem to get sleep working properly and I'm not sure why, so for now I'm stuck with no bluetooth...

arkadeian
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Hi I have the same network card, and I have enabled dual boot between windows 11 and ubuntu 20.04

I have updated the kernal to be 5.15.0, and I have followed these guidelines this, you have to make sure that secure boot is disabled.

then shutdown the device and start it again and it worked fine for both wi-fi and bluetooth

Abdullah
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I have the same wifi card. I am using ubuntu 20.04. I was facing the same issue. So I upgraded my kernel to 5.15.0-051500-generic. Now the issue is completely gone and both wifi and Bluetooth are working perfectly.

Use these to upgrade kernel:

Open terminal and enter the following commands

sudo add-apt-repository ppa:cappelikan/ppa
sudo apt update
sudo apt install mainline

Run mainline from application and install kernel 5.15

Rahul Raaghav A
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