<SOLVED> Wifi card not found

gabbo · Post by **gabbo** » Thu Sep 23, 2021 2:53 pm

Hi,
I just bought a new PC (Acer Aspire 7) and I'm trying to install Linux Mint 20.2.
However, when boot from the live USB the wifi card is not found.
Is there a way to fix this before the installation?
Otherwise, how can I do it afterwards?

Here there are the outputs regarding the laptop:

Code: Select all

$ lspci -nnk | grep -i net -A2
03:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 15)
	Subsystem: Acer Incorporated [ALI] RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [1025:1524]
	Kernel driver in use: r8169
	Kernel modules: r8169
04:00.0 Network controller [0280]: MEDIATEK Corp. Device [14c3:7961]
	Subsystem: Lite-On Communications Inc Device [11ad:3802]
05:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Device [1002:164c] (rev c1)

Code: Select all

$ lspci && rfkill list && mokutil --sb-state
00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir Root Complex
00:00.2 IOMMU: Advanced Micro Devices, Inc. [AMD] Renoir IOMMU
00:01.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir PCIe Dummy Host Bridge
00:01.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Renoir PCIe GPP Bridge
00:01.3 PCI bridge: Advanced Micro Devices, Inc. [AMD] Renoir PCIe GPP Bridge
00:02.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir PCIe Dummy Host Bridge
00:02.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Renoir PCIe GPP Bridge
00:02.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Renoir PCIe GPP Bridge
00:08.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir PCIe Dummy Host Bridge
00:08.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Renoir Internal PCIe GPP Bridge to Bus
00:08.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Renoir Internal PCIe GPP Bridge to Bus
00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 51)
00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev 51)
00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir Device 24: Function 0
00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir Device 24: Function 1
00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir Device 24: Function 2
00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir Device 24: Function 3
00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir Device 24: Function 4
00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir Device 24: Function 5
00:18.6 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir Device 24: Function 6
00:18.7 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir Device 24: Function 7
01:00.0 3D controller: NVIDIA Corporation Device 25a2 (rev a1)
02:00.0 Non-Volatile memory controller: Sandisk Corp Device 5009 (rev 01)
03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 15)
04:00.0 Network controller: MEDIATEK Corp. Device 7961
05:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Device 164c (rev c1)
05:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Device 1637
05:00.2 Encryption controller: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 10h-1fh) Platform Security Processor
05:00.3 USB controller: Advanced Micro Devices, Inc. [AMD] Renoir USB 3.1
05:00.4 USB controller: Advanced Micro Devices, Inc. [AMD] Renoir USB 3.1
05:00.5 Multimedia controller: Advanced Micro Devices, Inc. [AMD] Raven/Raven2/FireFlight/Renoir Audio Processor (rev 01)
05:00.6 Audio device: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 10h-1fh) HD Audio Controller
06:00.0 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode] (rev 81)
06:00.1 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode] (rev 81)
0: acer-wireless: Wireless LAN
	Soft blocked: no
	Hard blocked: no
1: acer-bluetooth: Bluetooth
	Soft blocked: no
	Hard blocked: no
2: hci0: Bluetooth
	Soft blocked: no
	Hard blocked: no
SecureBoot enabled

Thanks!

sleeper12 · Post by **sleeper12** » Thu Sep 23, 2021 2:55 pm

Disable secure boot in Bios & see if that helps.

gabbo · Post by **gabbo** » Fri Sep 24, 2021 3:38 am

I removed secure boot, but the problem persists.

Here are the outputs of the same two commands as before:

Code: Select all

$ lspci -nnk | grep -i net -A2
03:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 15)
	Subsystem: Acer Incorporated [ALI] RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [1025:1524]
	Kernel driver in use: r8169
	Kernel modules: r8169
04:00.0 Network controller [0280]: MEDIATEK Corp. Device [14c3:7961]
	Subsystem: Lite-On Communications Inc Device [11ad:3802]
05:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Device [1002:164c] (rev c1)

Code: Select all

$ lspci && rfkill list && mokutil --sb-state
00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir Root Complex
00:00.2 IOMMU: Advanced Micro Devices, Inc. [AMD] Renoir IOMMU
00:01.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir PCIe Dummy Host Bridge
00:01.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Renoir PCIe GPP Bridge
00:01.3 PCI bridge: Advanced Micro Devices, Inc. [AMD] Renoir PCIe GPP Bridge
00:02.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir PCIe Dummy Host Bridge
00:02.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Renoir PCIe GPP Bridge
00:02.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Renoir PCIe GPP Bridge
00:08.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir PCIe Dummy Host Bridge
00:08.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Renoir Internal PCIe GPP Bridge to Bus
00:08.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Renoir Internal PCIe GPP Bridge to Bus
00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 51)
00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev 51)
00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir Device 24: Function 0
00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir Device 24: Function 1
00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir Device 24: Function 2
00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir Device 24: Function 3
00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir Device 24: Function 4
00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir Device 24: Function 5
00:18.6 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir Device 24: Function 6
00:18.7 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir Device 24: Function 7
01:00.0 3D controller: NVIDIA Corporation Device 25a2 (rev a1)
02:00.0 Non-Volatile memory controller: Sandisk Corp Device 5009 (rev 01)
03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 15)
04:00.0 Network controller: MEDIATEK Corp. Device 7961
05:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Device 164c (rev c1)
05:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Device 1637
05:00.2 Encryption controller: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 10h-1fh) Platform Security Processor
05:00.3 USB controller: Advanced Micro Devices, Inc. [AMD] Renoir USB 3.1
05:00.4 USB controller: Advanced Micro Devices, Inc. [AMD] Renoir USB 3.1
05:00.5 Multimedia controller: Advanced Micro Devices, Inc. [AMD] Raven/Raven2/FireFlight/Renoir Audio Processor (rev 01)
05:00.6 Audio device: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 10h-1fh) HD Audio Controller
06:00.0 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode] (rev 81)
06:00.1 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode] (rev 81)
0: acer-wireless: Wireless LAN
	Soft blocked: no
	Hard blocked: no
1: acer-bluetooth: Bluetooth
	Soft blocked: no
	Hard blocked: no
2: hci0: Bluetooth
	Soft blocked: no
	Hard blocked: no
SecureBoot disabled

I've noticed that the "Fast boot" option is enabled. Could it be a part of the problem?
Otherwise I think I need to get the correct drivers, but I'm not sure how..

Thanks!

sleeper12 · Post by **sleeper12** » Fri Sep 24, 2021 12:50 pm

Yes, disable Fast Boot also. If that doesn't help, you may need a higher kernel. Which kernel do you have now? Check:

Code: Select all

 uname -r

gabbo · Post by **gabbo** » Fri Sep 24, 2021 2:34 pm

Disabled, but the issue is still there.

As I'm just using the live usb Linux Mint 20.2 image the kernel is: 5.4.0-74-generic

I was hoping to be able to fix this problem before the actual installation, but I guess that I have to install it and then update the kernel.
Do you have any suggestions about this procedure?

Thanks!

sleeper12 · Post by **sleeper12** » Fri Sep 24, 2021 2:53 pm

You can try a live session of Mint Edge that comes with the 5.11 kernel. But, that kernel may not be new enough either: https://www.linuxmint.com/edition.php?id=291

gabbo · Post by **gabbo** » Fri Sep 24, 2021 2:58 pm

Ok thanks. I'm downloading it and I'll test it as soon as I can.
Hopefully this will fix the problem

gabbo · Post by **gabbo** » Fri Sep 24, 2021 4:19 pm

Nothing. The problem is still there with the Edge version and the 5.11 kernel.
I also noticed that while the Bluetooth applet shows the bluetooth as on by default it is not able to find any devices and just keeps looking for devices.

Using Windows I saw that the wifi module is the mediatek wifi 6 mt7921 and looking online I found this answer:
https://askubuntu.com/questions/1346617 ... -bluetooth

So, in short, it seems that I have to install the 5.12 kernel.
Do you think is better if I install the standard Linux Mint and then upgrade the kernel through the software upgrade or start already with the Edge version and then upgrade from there?

As always, thanks.

sleeper12 · Post by **sleeper12** » Fri Sep 24, 2021 4:27 pm

gabbo wrote: ⤴Fri Sep 24, 2021 4:19 pm Nothing. The problem is still there with the Edge version and the 5.11 kernel.
I also noticed that while the Bluetooth applet shows the bluetooth as on by default it is not able to find any devices and just keeps looking for devices.

Should I try to install Mint Edge and then upgrade the kernel after the installation?

As always, thanks.

You could do that, but even a newer kernel may not help. Your hardware might be too new for linux right now. So, you can either try a newer kernel: https://easylinuxtipsproject.blogspot.c ... t.html#ID8

Or, get a usb wifi adapter that works out of the box on linux.

gabbo · Post by **gabbo** » Fri Sep 24, 2021 4:34 pm

I edited the answer at the same time you posted your reply haha.
As you can see in the post above it seems that the 5.12 kernel might do the trick (hopefully)

sleeper12 · Post by **sleeper12** » Fri Sep 24, 2021 4:49 pm

Do you have 7921 or 7961? From what you posted it looks like 7961 to me:

04:00.0 Network controller: MEDIATEK Corp. Device 7961

Anyway, the 5.12 kernel isn't available directly from Mint right now, far as I know. You might get it at the link I posted. 5.12 might work for you, might not.

gabbo · Post by **gabbo** » Fri Sep 24, 2021 4:54 pm

By checking the "Computer Management" (the name might be a bit different as I'm translating it on the fly) on Win 10 I read MT7921.
Hopefully it will work.
Thanks for the help!

sleeper12 · Post by **sleeper12** » Fri Sep 24, 2021 4:58 pm

All you can do is try. If the 5.12 doesn't do it, maybe the 5.13. Let us know.

gabbo · Post by **gabbo** » Mon Sep 27, 2021 5:35 am

I added the PPA following the link you shared (https://easylinuxtipsproject.blogspot.c ... t.html#ID8) and I installed the 5.13 kernel from the update manager.
This solved the wifi issue.

P.S.: for someone else with this problem it might be useful to remember that in case an Ethernet cable is not available one could obtain internet on a wifi-less laptop using the USB tethering from the phone

sleeper12 · Post by **sleeper12** » Mon Sep 27, 2021 10:56 am

Good to hear. I had a feeling you might need to go with the 5.13.

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<SOLVED> Wifi card not found

<SOLVED> Wifi card not found

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