[SOLVED] NetworkManager disconnect and connect.

Adriik · 2022-03-20 01:40:13

I have been having this problem for a few days. NetworkManager disconnects and connects the internet. After a while, no website works, showing a problem with DNS resolution. Restarting NetworkManager solves the problem temporarily.
Looking for a similar problem, I tried to set wifi.powersave = 2, ignore ipv6, without exit.
I don't have the network knowledge to troubleshoot the problem, so I hope someone can help me. Thanks.

* Journalctl -b:
http://0x0.st/oNSx.txt

* lspci:

00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Host Bridge/DRAM Registers (rev 08)
00:02.0 VGA compatible controller: Intel Corporation Skylake GT2 [HD Graphics 520] (rev 07)
00:04.0 Signal processing controller: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Thermal Subsystem (rev 08)
00:14.0 USB controller: Intel Corporation Sunrise Point-LP USB 3.0 xHCI Controller (rev 21)
00:14.2 Signal processing controller: Intel Corporation Sunrise Point-LP Thermal subsystem (rev 21)
00:15.0 Signal processing controller: Intel Corporation Sunrise Point-LP Serial IO I2C Controller #0 (rev 21)
00:15.1 Signal processing controller: Intel Corporation Sunrise Point-LP Serial IO I2C Controller #1 (rev 21)
00:16.0 Communication controller: Intel Corporation Sunrise Point-LP CSME HECI #1 (rev 21)
00:17.0 SATA controller: Intel Corporation Sunrise Point-LP SATA Controller [AHCI mode] (rev 21)
00:1c.0 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #5 (rev f1)
00:1c.5 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #6 (rev f1)
00:1f.0 ISA bridge: Intel Corporation Sunrise Point-LP LPC Controller (rev 21)
00:1f.2 Memory controller: Intel Corporation Sunrise Point-LP PMC (rev 21)
00:1f.3 Audio device: Intel Corporation Sunrise Point-LP HD Audio (rev 21)
00:1f.4 SMBus: Intel Corporation Sunrise Point-LP SMBus (rev 21)
01:00.0 Network controller: Qualcomm Atheros QCA9565 / AR9565 Wireless Network Adapter (rev 01)
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL810xE PCI Express Fast Ethernet controller (rev 07)

* find /etc/systemd -type l -exec test -f {} \; -print | awk -F'/' '{ printf ("%-40s | %s\n", $(NF-0), $(NF-1)) }' | sort -f :

bluetooth.service                        | bluetooth.target.wants
dbus-org.bluez.service                   | system
dbus-org.freedesktop.nm-dispatcher.service | system
dirmngr.socket                           | sockets.target.wants
display-manager.service                  | system
gcr-ssh-agent.socket                     | sockets.target.wants
getty@tty1.service                       | getty.target.wants
gpg-agent-browser.socket                 | sockets.target.wants
gpg-agent-extra.socket                   | sockets.target.wants
gpg-agent.socket                         | sockets.target.wants
gpg-agent-ssh.socket                     | sockets.target.wants
NetworkManager.service                   | multi-user.target.wants
NetworkManager-wait-online.service       | network-online.target.wants
p11-kit-server.socket                    | sockets.target.wants
pipewire-media-session.service           | pipewire.service.wants
pipewire-pulse.socket                    | sockets.target.wants
pipewire-session-manager.service         | user
pipewire.socket                          | sockets.target.wants
remote-fs.target                         | multi-user.target.wants
ufw.service                              | multi-user.target.wants
xdg-user-dirs-update.service             | default.target.wants

* /etc/hosts:

# Static table lookup for hostnames.
# See hosts(5) for details.

127.0.0.1 	localhost
::1 		localhost ip6-localhost ip6-loopback
127.0.1.1 	adriik-dell

* /etc/resolv.conf:

# Generated by NetworkManager
nameserver 100.72.3.1
nameserver 100.72.3.117

* My system:

System:
  Kernel: 5.16.15-arch1-1 x86_64 bits: 64 compiler: gcc v: 11.2.0
    parameters: BOOT_IMAGE=/boot/vmlinuz-linux
    root=UUID=c8fe71ce-5138-4bcd-a577-2adb77172cc8 rw loglevel=3 quiet
  Desktop: i3 4.20.1 info: i3bar vt: 7 dm: LightDM 1.30.0 Distro: Arch Linux
Machine:
  Type: Laptop System: Dell product: Inspiron 14-3467 v: N/A
    serial: <superuser required> Chassis: type: 9 serial: <superuser required>
  Mobo: Dell model: 0JXKVV v: A00 serial: <superuser required> UEFI: Dell
    v: 2.9.0 date: 01/17/2019
Battery:
  ID-1: BAT0 charge: 38.3 Wh (100.0%) condition: 38.3/41.4 Wh (92.5%)
    volts: 16.7 min: 14.8 model: LGC-LGC2.80 DELL 991XP71 type: Li-poly
    serial: <filter> status: Full
CPU:
  Info: model: Intel Core i3-6006U bits: 64 type: MT MCP arch: Skylake
    family: 6 model-id: 0x4E (78) stepping: 3 microcode: 0xC6
  Topology: cpus: 1x cores: 2 tpc: 2 threads: 4 smt: enabled cache:
    L1: 128 KiB desc: d-2x32 KiB; i-2x32 KiB L2: 512 KiB desc: 2x256 KiB
    L3: 3 MiB desc: 1x3 MiB
  Speed (MHz): avg: 665 high: 1081 min/max: 400/2000 scaling:
    driver: intel_pstate governor: powersave cores: 1: 1081 2: 582 3: 500 4: 500
    bogomips: 16006
  Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
  Vulnerabilities:
  Type: itlb_multihit status: KVM: VMX disabled
  Type: l1tf
    mitigation: PTE Inversion; VMX: conditional cache flushes, SMT vulnerable
  Type: mds
    status: Vulnerable: Clear CPU buffers attempted, no microcode; SMT vulnerable
  Type: meltdown mitigation: PTI
  Type: spec_store_bypass
    mitigation: Speculative Store Bypass disabled via prctl
  Type: spectre_v1
    mitigation: usercopy/swapgs barriers and __user pointer sanitization
  Type: spectre_v2 mitigation: Retpolines, IBPB: conditional, IBRS_FW,
    STIBP: conditional, RSB filling
  Type: srbds status: Vulnerable: No microcode
  Type: tsx_async_abort status: Not affected
Graphics:
  Device-1: Intel Skylake GT2 [HD Graphics 520] vendor: Dell driver: i915
    v: kernel ports: active: eDP-1 empty: HDMI-A-1 bus-ID: 00:02.0
    chip-ID: 8086:1916 class-ID: 0300
  Device-2: Sunplus Innovation Integrated Webcam type: USB driver: uvcvideo
    bus-ID: 1-5:2 chip-ID: 1bcf:2c00 class-ID: 0e02
  Display: x11 server: X.Org v: 1.21.1.3 compositor: Picom v: git-7e568
    driver: X: loaded: modesetting alternate: fbdev,intel,vesa gpu: i915
    display-ID: :0 screens: 1
  Screen-1: 0 s-res: 1366x768 s-dpi: 96 s-size: 361x203mm (14.2x8.0")
    s-diag: 414mm (16.3")
  Monitor-1: eDP-1 model: BOE Display built: 2016 res: 1366x768 hz: 60
    dpi: 112 gamma: 1.2 size: 309x173mm (12.2x6.8") diag: 354mm (13.9")
    ratio: 16:9 modes: 1366x768
  OpenGL: renderer: Mesa Intel HD Graphics 520 (SKL GT2) v: 4.6 Mesa 21.3.7
    direct render: Yes
Audio:
  Device-1: Intel Sunrise Point-LP HD Audio vendor: Dell driver: snd_hda_intel
    v: kernel alternate: snd_soc_skl bus-ID: 00:1f.3 chip-ID: 8086:9d70
    class-ID: 0403
  Sound Server-1: ALSA v: k5.16.15-arch1-1 running: yes
  Sound Server-2: PulseAudio v: 15.0 running: no
  Sound Server-3: PipeWire v: 0.3.48 running: yes
Network:
  Device-1: Qualcomm Atheros QCA9565 / AR9565 Wireless Network Adapter
    vendor: Dell Vostro 3470 driver: ath9k v: kernel pcie: gen: 1
    speed: 2.5 GT/s lanes: 1 bus-ID: 01:00.0 chip-ID: 168c:0036 class-ID: 0280
  IF: wlp1s0 state: up mac: <filter>
  Device-2: Realtek RTL810xE PCI Express Fast Ethernet vendor: Dell
    driver: r8169 v: kernel pcie: gen: 1 speed: 2.5 GT/s lanes: 1 port: e000
    bus-ID: 02:00.0 chip-ID: 10ec:8136 class-ID: 0200
  IF: enp2s0 state: down mac: <filter>
Bluetooth:
  Device-1: Qualcomm Atheros type: USB driver: btusb v: 0.8 bus-ID: 1-8:5
    chip-ID: 0cf3:e005 class-ID: e001
  Report: bt-adapter ID: hci0 rfk-id: 1 state: down
    bt-service: enabled,running rfk-block: hardware: no software: no
    address: <filter>
Drives:
  Local Storage: total: 223.57 GiB used: 27.76 GiB (12.4%)
  SMART Message: Unable to run smartctl. Root privileges required.
  ID-1: /dev/sda maj-min: 8:0 vendor: Kingston model: SA400S37240G
    size: 223.57 GiB block-size: physical: 512 B logical: 512 B speed: 6.0 Gb/s
    type: SSD serial: <filter> rev: B1H5 scheme: GPT
Partition:
  ID-1: / raw-size: 223.08 GiB size: 218.52 GiB (97.96%)
    used: 27.76 GiB (12.7%) fs: ext4 dev: /dev/sda2 maj-min: 8:2
Swap:
  Kernel: swappiness: 10 (default 60) cache-pressure: 100 (default)
  ID-1: swap-1 type: file size: 1024 MiB used: 0 KiB (0.0%) priority: -2
    file: /swapfile
Sensors:
  System Temperatures: cpu: 37.0 C pch: 36.5 C mobo: 36.0 C
  Fan Speeds (RPM): cpu: 0
Info:
  Processes: 170 Uptime: 45m wakeups: 1 Memory: 3.71 GiB
  used: 1.78 GiB (48.1%) Init: systemd v: 250 tool: systemctl Compilers:
  gcc: 11.2.0 Packages: 997 pacman: 992 lib: 349 flatpak: 5 Shell: Zsh
  v: 5.8.1 running-in: alacritty inxi: 3.3.13

Last edited by Adriik (2022-03-20 17:17:42)

pipep · 2022-03-20 06:30:38

It seems to be this bug in kernel linux-5.16.15:
https://bugzilla.kernel.org/show_bug.cgi?id=215703
Downgrading to linux-5.16.14 solves the problem for me.

Last edited by pipep (2022-03-20 06:31:32)

Adriik · 2022-03-20 13:32:55

pipep wrote:

It seems to be this bug in kernel linux-5.16.15:
https://bugzilla.kernel.org/show_bug.cgi?id=215703
Downgrading to linux-5.16.14 solves the problem for me.

Looks like it work. I want to wait a little more to mark this as solved. To be sure.
But i don't see any problem with NetworkManager in logs for now.

Arch Linux

#1 2022-03-20 01:40:13

[SOLVED] NetworkManager disconnect and connect.

#2 2022-03-20 06:30:38

Re: [SOLVED] NetworkManager disconnect and connect.

#3 2022-03-20 13:32:55

Re: [SOLVED] NetworkManager disconnect and connect.

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