Wifi occasionally cuts out or disconnects requiring a restart

[azywng]

Ubuntu Version:
25.10

Desktop Environment (if applicable):
KDE Plasma

Problem Description:
Every so often, my wifi will cut out for a few seconds. It’ll also sometimes stop working entirely until I restart my computer. I don’t get this issue on other devices in my home.

Relevant System Information:
Network Interfaces:

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host noprefixroute 
       valid_lft forever preferred_lft forever
2: wlp1s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether c8:a3:e8:76:9b:5d brd ff:ff:ff:ff:ff:ff
    altname wlxc8a3e8769b5d
    inet 192.168.1.246/24 brd 192.168.1.255 scope global dynamic noprefixroute wlp1s0
       valid_lft 86258sec preferred_lft 86258sec
    inet6 2605:a601:a0bf:7600::8/128 scope global dynamic noprefixroute 
       valid_lft 85902sec preferred_lft 43059sec
    inet6 2605:a601:a0bf:7600:c7ef:a669:8b5:ab83/64 scope global temporary dynamic 
       valid_lft 85902sec preferred_lft 64302sec
    inet6 2605:a601:a0bf:7600:ffa0:23a8:ba8a:9a58/64 scope global dynamic mngtmpaddr noprefixroute 
       valid_lft 85902sec preferred_lft 64302sec
    inet6 fe80::e659:9666:c4a:46cd/64 scope link noprefixroute 
       valid_lft forever preferred_lft forever
3: lxcbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
    link/ether 10:66:6a:00:00:00 brd ff:ff:ff:ff:ff:ff
    inet 10.0.3.1/24 brd 10.0.3.255 scope global lxcbr0
       valid_lft forever preferred_lft forever
    inet6 fc42:5009:ba4b:5ab0::1/64 scope global 
       valid_lft forever preferred_lft forever

What I’ve Tried:
Restarting the computer seems to restore wifi, but it usually goes down after a few hours.

Please let me know what I can do to help identify and fix the problem. Thanks.

[pavlos]

identify the wifi chip, either lsusb or lspci. then we can figure out if supported, if you have to reduce power or other parameters.

[azywng]

Here’s the ouptut of lsusb

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 05e3:0610 Genesys Logic, Inc. Hub
Bus 001 Device 003: ID 27c6:609c Shenzhen Goodix Technology Co.,Ltd. Goodix Fingerprint USB Device
Bus 001 Device 004: ID 1a2c:831b China Resource Semico Co., Ltd USB Gaming Keyboard 
Bus 001 Device 005: ID 0e8d:e616 MediaTek Inc. Wireless_Device
Bus 001 Device 006: ID 046d:0acf Logitech, Inc. Yeti Nano
Bus 001 Device 007: ID 046d:c52b Logitech, Inc. Unifying Receiver
Bus 001 Device 008: ID 0781:5597 SanDisk Corp.  SanDisk 3.2Gen1
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 002: ID 05e3:0626 Genesys Logic, Inc. Hub
Bus 002 Device 003: ID 0bc2:2344 Seagate RSS LLC Portable
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 002: ID 32ac:001c Framework Laptop Webcam Module (2nd Gen)
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 007 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 007 Device 002: ID 32ac:0002 Framework HDMI Expansion Card
Bus 008 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub

lspci

00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Phoenix Root Complex
00:00.2 IOMMU: Advanced Micro Devices, Inc. [AMD] Phoenix IOMMU
00:01.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Phoenix Dummy Host Bridge
00:02.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Phoenix Dummy Host Bridge
00:02.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Phoenix GPP Bridge
00:02.4 PCI bridge: Advanced Micro Devices, Inc. [AMD] Phoenix GPP Bridge
00:03.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Phoenix Dummy Host Bridge
00:03.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 19h USB4/Thunderbolt PCIe tunnel
00:04.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Phoenix Dummy Host Bridge
00:04.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 19h USB4/Thunderbolt PCIe tunnel
00:08.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Phoenix Dummy Host Bridge
00:08.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Phoenix Internal GPP Bridge to Bus [C:A]
00:08.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Phoenix Internal GPP Bridge to Bus [C:A]
00:08.3 PCI bridge: Advanced Micro Devices, Inc. [AMD] Phoenix Internal GPP Bridge to Bus [C:A]
00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 71)
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] Phoenix Data Fabric; Function 0
00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Phoenix Data Fabric; Function 1
00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Phoenix Data Fabric; Function 2
00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Phoenix Data Fabric; Function 3
00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Phoenix Data Fabric; Function 4
00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Phoenix Data Fabric; Function 5
00:18.6 Host bridge: Advanced Micro Devices, Inc. [AMD] Phoenix Data Fabric; Function 6
00:18.7 Host bridge: Advanced Micro Devices, Inc. [AMD] Phoenix Data Fabric; Function 7
01:00.0 Network controller: MEDIATEK Corp. MT7922 802.11ax PCI Express Wireless Network Adapter
02:00.0 Non-Volatile memory controller: Sandisk Corp WD SN560/SN740/SN770/SN5000 NVMe SSD (rev 01)
c1:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Phoenix1 (rev cb)
c1:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Radeon High Definition Audio Controller [Rembrandt/Strix]
c1:00.2 Encryption controller: Advanced Micro Devices, Inc. [AMD] Phoenix CCP/PSP 3.0 Device
c1:00.3 USB controller: Advanced Micro Devices, Inc. [AMD] Device 15b9
c1:00.4 USB controller: Advanced Micro Devices, Inc. [AMD] Device 15ba
c1:00.5 Multimedia controller: Advanced Micro Devices, Inc. [AMD] Audio Coprocessor (rev 63)
c1:00.6 Audio device: Advanced Micro Devices, Inc. [AMD] Family 17h/19h/1ah HD Audio Controller
c2:00.0 Non-Essential Instrumentation [1300]: Advanced Micro Devices, Inc. [AMD] Phoenix Dummy Function
c2:00.1 Signal processing controller: Advanced Micro Devices, Inc. [AMD] AMD IPU Device
c3:00.0 Non-Essential Instrumentation [1300]: Advanced Micro Devices, Inc. [AMD] Phoenix Dummy Function
c3:00.3 USB controller: Advanced Micro Devices, Inc. [AMD] Device 15c0
c3:00.4 USB controller: Advanced Micro Devices, Inc. [AMD] Device 15c1
c3:00.5 USB controller: Advanced Micro Devices, Inc. [AMD] Pink Sardine USB4/Thunderbolt NHI controller #1
c3:00.6 USB controller: Advanced Micro Devices, Inc. [AMD] Pink Sardine USB4/Thunderbolt NHI controller #2

Let me know if you need anything else.

[pavlos]

@azywng

01:00.0 Network controller: MEDIATEK Corp. MT7922 802.11ax PCI Express Wireless Network Adapter

this is your wifi chip and there is a post about the MT7922 driver

Firmware upgrade for Mediatek MT7922 Wifi chip

Ubuntu Version: Ubuntu 24.04.2 LTS Desktop Environment (if applicable): Gnome Problem Description: Hallo, I’m using a laptop based on AMD Ryzen™ 7 PRO 7840U w/ Radeon™ 780M Graphics × 16. My question is about the shipped firmware version for the embedded wifi chip: *-network descrizione: Interfaccia Wireless prodotto: MT7922 802.11ax PCI Express Wireless Network Adapter fornitore: MEDIATEK Corp. id fisico: 0 bus info: pci@0000:01:00.…

[azywng]

Followed the instructions on the page you linked and am able to connect to the internet. I’ll let you know if I have any more problems with unstable connections. If nothing goes wrong for a few weeks I’ll mark your post as the solution.

[pavlos]

there is wavemon, an open source, ncurses-based pkg that gives you details about your wifi.

sudo apt install wavemon

[azywng]

Here’s what i get when I run the program:

Link quality sits at around 70% with a signal of around -63 dBm.

What else should I be looking for if I want to see if there’s problems?

[pavlos]

Link quality is good.
No reason to mask SSID unless it is a bad word. You’re pw protected.
I look at Statistics, drop should be zero. (losing packets)
You’re connected at 2.4 GHz, channel 1.
If you configure your router to 5 GHz, you should have better perf.
reading material: man wavemon

All looks good.

Interesting reading:
https://www.michaelstinkerings.org/the-mt7922-6ghz-debacle-why-linux-users-cant-use-wifi-6e-and-how-i-fixed-it/

[azywng]

Didn’t really do anything (just left it on to go to work) and it looks like it’s connected to the 5 GHz frequency for now. Not sure why.

[Actionparsnip]

That link quality is… Nice!

[pavlos]

wireless auto-negotiates so it could connect to 2.4 G or 5 G. bring up your browser, go to http://fast.com you will get xx Mbps. I get about 90 Mbps but I have a different chipset.

[azywng]

After a while I the wifi went down again and I had to restart to fix things. Here’s what showed up when I tried to view the info in the Networks widget:

[pavlos]

Try this:

Disable WPA3: If problems persist, set your router’s security to WPA2-PSK (AES) instead of WPA3 or Mixed Mode. This often resolves stability issues with smart home or older devices.

[azywng]

Went into my home’s router security app and it looks like the only settings for security protocol are:

WPA/WPA2 (Legacy), WPA2 (which is what is currently selected), and WPA2/WPA3. Not sure which one would be closest to what you’re suggesting.

[Actionparsnip]

Could try

echo "options mt7921e disable_aspm=1" | sudo tee /etc/modprobe.d/mt7921e_fix.conf > /dev/null

Reboot to test. If it’s not better or worse then roll back with

sudo rm /etc/modprobe.d/mt7921e_fix.conf

I assume it’s using this module. You can check with

sudo lshw -C network | grep driver

If its a different driver then disregard the above but please share the module name

[azywng]

It is indeed using that module. I gave your suggestion a try but it didn’t seem to have any effect (it still eventually cut out and I had to restart it), so I went and rolled it back.

[Actionparsnip]

You may find other options for the module and you can set them in this way.