[LMDE 3] Wifi disconects after a few minutes, Network Manager stops working

[rkjbt]

as stated in the title my wifi has been causing me issues across the board for the past few days. The wifi will work fine until eventually and randomly disconnecting, followed by network manager stating that my wifi is unavailable. None of my networks become discoverable. The only solution thus far has been rebooting, for some reason my wifi returns following a reboot.

output of lsusb

rkjbt@rkjbt-lappy:~$ lsusb
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 005: ID 04f3:22c3 Elan Microelectronics Corp.
Bus 001 Device 004: ID 1bcf:2c9b Sunplus Innovation Technology Inc.
Bus 001 Device 003: ID 8087:0aa7 Intel Corp.
Bus 001 Device 006: ID 046d:c52b Logitech, Inc. Unifying Receiver
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

[sleeper12]

Maybe something here will help:
https://easylinuxtipsproject.blogspot.c ... s.html#ID2

If not post results of:

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 inxi -Fxz 

[trytip]

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cat /etc/NetworkManager/NetworkManager.conf

[rkjbt]

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inxi -Fxz output

System:
Host: rkjbt-lappy Kernel: 4.9.0-11-amd64 x86_64 bits: 64 compiler: gcc
v: 6.3.0 Desktop: Cinnamon 4.2.4 Distro: LMDE 3 Cindy
base: Debian 9.3 stretch
Machine:
Type: Laptop System: HP product: HP Laptop 15-bs0xx
v: Type1ProductConfigId serial: <filter>
Mobo: HP model: 832A v: 23.46 serial: <filter> UEFI: Insyde v: F.32
date: 11/23/2017
Battery:
ID-1: BAT1 charge: 25.0 Wh condition: 25.5/31.1 Wh (82%)
model: Hewlett-Packard PABAS0241231 status: Discharging
CPU:
Topology: Dual Core model: Intel Core i3-7100U bits: 64 type: MT MCP
arch: Kaby Lake rev: 9 L2 cache: 3072 KiB
flags: lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 19200
Speed: 800 MHz min/max: 400/2400 MHz Core speeds (MHz): 1: 800 2: 800
3: 798 4: 800
Graphics:
Device-1: Intel vendor: Hewlett-Packard driver: i915 v: kernel
bus ID: 00:02.0
Display: x11 server: X.Org 1.19.2 driver: modesetting unloaded: fbdev,vesa
resolution: 1366x768~60Hz
OpenGL: renderer: Mesa DRI Intel HD Graphics 620 (Kabylake GT2)
v: 4.5 Mesa 13.0.6 direct render: Yes
Audio:
Device-1: Intel vendor: Hewlett-Packard driver: snd_hda_intel v: kernel
bus ID: 00:1f.3
Sound Server: ALSA v: k4.9.0-11-amd64
Network:
Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
vendor: Hewlett-Packard driver: r8169 v: 2.3LK-NAPI port: 3000
bus ID: 01:00.0
IF: eno1 state: down mac: <filter>
Device-2: Intel driver: iwlwifi v: kernel port: 3000 bus ID: 02:00.0
IF: wlo1 state: up mac: <filter>
Drives:
Local Storage: total: 447.13 GiB used: 6.35 GiB (1.4%)
ID-1: /dev/sda vendor: SanDisk model: Ultra II 480GB size: 447.13 GiB
Partition:
ID-1: / size: 438.82 GiB used: 6.34 GiB (1.4%) fs: ext4 dev: /dev/sda2
Sensors:
System Temperatures: cpu: 34.0 C mobo: 29.8 C
Fan Speeds (RPM): N/A
Info:
Processes: 206 Uptime: 3m Memory: 11.66 GiB used: 1.02 GiB (8.7%)
Init: systemd runlevel: 5 Compilers: gcc: 6.3.0 Shell: bash v: 4.4.12
inxi: 3.0.32

One fix I've tried which seemed to have marginal success (longer period of connection) is installing the rtl8821ce driver, however I still have issues when I reboot, suspend, or still random connection drops.

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cat /etc/NetworkManager/NetworkManager.conf

[main]
plugins=ifupdown,keyfile

[device]
wifi.scan-rand-mac-address=no

[ifupdown]
managed=false

[HAWR]

Hello rkjbt,

One fix I've tried which seemed to have marginal success (longer period of connection) is installing the rtl8821ce driver

That is not a fix, because your laptop has no device for that Realtek rtl8821ce driver. You should remove it. You have an Intel wifi card, for which the kernel module iwlwifi is the driver:

Device-2: Intel driver: iwlwifi v: kernel port: 3000 bus ID: 02:00.0
IF: wlo1 state: up mac: <filter>

Can you please post the output of the following command, so that we get more information, what Intel card is built in:

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lspci -nnk | grep -i net -A2

[rkjbt]

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lspci -nnk | grep -i net -A2

01:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 15)
Subsystem: Hewlett-Packard Company RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [103c:832a]
Kernel driver in use: r8168
Kernel modules: r8168
02:00.0 Network controller [0280]: Intel Corporation Device [8086:24fb] (rev 10)
Subsystem: Intel Corporation Device [8086:2110]
Kernel driver in use: iwlwifi[/quote

[HAWR]

Hello rkjbt,

thank you for the output. You have a Intel Dual Band Wireless-AC 3168NGW [Stone Peak] (PCI ID 8086:24fb). Before we search in other directions, I don't know, if you have the most recent firmware (from July 2019) installed. Can you please check in the file manager under /lib/firmware for the file iwlwifi-3168-29.ucode?

https://packages.debian.org/bullseye/firmware-iwlwifi

[rkjbt]

I just checked and these are the only two iwlwifi-3168 files present. I assume my firmware is out of date?

iwlwifi-3168-21.ucode
iwlwifi-3168-22.ucode

[HAWR]

Hello rkjbt,

the -29.ucode is the most recent file. You can download the deb package, install it by double-clicking and then reboot to see, if the new iwlwifi firmware helps to solve your issues.

https://packages.debian.org/en/bullseye ... i/download

[trytip]

I just checked and these are the only two iwlwifi-3168 files present. I assume my firmware is out of date?

iwlwifi-3168-21.ucode
iwlwifi-3168-22.ucode

a new firmware pack was just released. i should not have to say create timeshift snap to restore if things are bad https://git.kernel.org/pub/scm/linux/ke ... mware.git/
extract it and copy over /lib/firmware then in Terminal sudo update-initramfs -u -k all after which reboot

[HAWR]

Hello trytip,

I'm sorry, but you haven't read the whole thread, otherwise you wouldn't have written your post.

[rkjbt]

in my /lib/firmware I now have iwlwifi-3168-29.ucode, I removed iwlwifi-3168-22.ucode. prior to removing .22 I was experiencing the same issues as before. Sporadic disconnections only solved by rebooting, sometimes multiple times. I will keep trying and see if removing .22 makes a difference.