[SOLVED] - Network Manager v1.20 bug corrected by downgrading

After the 2019-08-01 update every time I login the network keep disconnecting and reconnecting in a infinite loop, the only solution is to manually disable the network and enable it again.

The latest updates didn't fix the problem.

Network manager log:

ago 22 08:39:18 manjaro-pc NetworkManager[1197]: <info>  [1566455958.1573] device (enp5s0): state change: activated -> unavailable (reason 'carrier-changed', sys-iface-state: 'managed')
ago 22 08:39:18 manjaro-pc NetworkManager[1197]: <info>  [1566455958.1662] manager: NetworkManager state is now CONNECTED_LOCAL
ago 22 08:39:19 manjaro-pc NetworkManager[1197]: <info>  [1566455959.5016] agent-manager: req[0x55a50c52b840, :1.65/org.kde.plasma.networkmanagement/1000]: agent registered
ago 22 08:39:21 manjaro-pc NetworkManager[1197]: <info>  [1566455961.0495] device (enp5s0): carrier: link connected
ago 22 08:39:21 manjaro-pc NetworkManager[1197]: <info>  [1566455961.0497] device (enp5s0): state change: unavailable -> disconnected (reason 'carrier-changed', sys-iface-state: 'managed')
ago 22 08:39:21 manjaro-pc NetworkManager[1197]: <info>  [1566455961.0507] policy: auto-activating connection 'Connessione via cavo 1' (40772538-e981-3fb2-9c85-08aeba3e2089)
ago 22 08:39:21 manjaro-pc NetworkManager[1197]: <info>  [1566455961.0511] device (enp5s0): Activation: starting connection 'Connessione via cavo 1' (40772538-e981-3fb2-9c85-08aeba3e2089)
ago 22 08:39:21 manjaro-pc NetworkManager[1197]: <info>  [1566455961.0512] device (enp5s0): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'managed')
ago 22 08:39:21 manjaro-pc NetworkManager[1197]: <info>  [1566455961.0516] manager: NetworkManager state is now CONNECTING
ago 22 08:39:21 manjaro-pc NetworkManager[1197]: <info>  [1566455961.0963] device (enp5s0): state change: prepare -> config (reason 'none', sys-iface-state: 'managed')
ago 22 08:39:21 manjaro-pc NetworkManager[1197]: <info>  [1566455961.0972] device (enp5s0): state change: config -> ip-config (reason 'none', sys-iface-state: 'managed')
ago 22 08:39:21 manjaro-pc NetworkManager[1197]: <warn>  [1566455961.0987] acd[0x55a50c511450,2]: couldn't init ACD for announcing addresses on interface 'enp5s0': Operazione non permessa
ago 22 08:39:21 manjaro-pc NetworkManager[1197]: <info>  [1566455961.0989] device (enp5s0): state change: ip-config -> ip-check (reason 'none', sys-iface-state: 'managed')
ago 22 08:39:21 manjaro-pc NetworkManager[1197]: <info>  [1566455961.1019] device (enp5s0): state change: ip-check -> secondaries (reason 'none', sys-iface-state: 'managed')
ago 22 08:39:21 manjaro-pc NetworkManager[1197]: <info>  [1566455961.1022] device (enp5s0): state change: secondaries -> activated (reason 'none', sys-iface-state: 'managed')
ago 22 08:39:21 manjaro-pc NetworkManager[1197]: <info>  [1566455961.1025] manager: NetworkManager state is now CONNECTED_LOCAL
ago 22 08:39:21 manjaro-pc NetworkManager[1197]: <info>  [1566455961.1032] manager: NetworkManager state is now CONNECTED_SITE
ago 22 08:39:21 manjaro-pc NetworkManager[1197]: <info>  [1566455961.1033] policy: set 'Connessione via cavo 1' (enp5s0) as default for IPv4 routing and DNS
ago 22 08:39:21 manjaro-pc NetworkManager[1197]: <info>  [1566455961.1087] device (enp5s0): Activation: successful, device activated.
ago 22 08:39:27 manjaro-pc NetworkManager[1197]: <info>  [1566455967.0990] device (enp5s0): state change: activated -> unavailable (reason 'carrier-changed', sys-iface-state: 'managed')
ago 22 08:39:27 manjaro-pc NetworkManager[1197]: <info>  [1566455967.1085] manager: NetworkManager state is now CONNECTED_LOCAL
ago 22 08:39:29 manjaro-pc NetworkManager[1197]: <info>  [1566455969.8898] device (enp5s0): carrier: link connected
ago 22 08:39:29 manjaro-pc NetworkManager[1197]: <info>  [1566455969.8901] device (enp5s0): state change: unavailable -> disconnected (reason 'carrier-changed', sys-iface-state: 'managed')
ago 22 08:39:29 manjaro-pc NetworkManager[1197]: <info>  [1566455969.8914] policy: auto-activating connection 'Connessione via cavo 1' (40772538-e981-3fb2-9c85-08aeba3e2089)
ago 22 08:39:29 manjaro-pc NetworkManager[1197]: <info>  [1566455969.8923] device (enp5s0): Activation: starting connection 'Connessione via cavo 1' (40772538-e981-3fb2-9c85-08aeba3e2089)
ago 22 08:39:29 manjaro-pc NetworkManager[1197]: <info>  [1566455969.8924] device (enp5s0): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'managed')
ago 22 08:39:29 manjaro-pc NetworkManager[1197]: <info>  [1566455969.8929] manager: NetworkManager state is now CONNECTING
ago 22 08:39:29 manjaro-pc NetworkManager[1197]: <info>  [1566455969.9405] device (enp5s0): state change: prepare -> config (reason 'none', sys-iface-state: 'managed')
ago 22 08:39:29 manjaro-pc NetworkManager[1197]: <info>  [1566455969.9416] device (enp5s0): state change: config -> ip-config (reason 'none', sys-iface-state: 'managed')
ago 22 08:39:29 manjaro-pc NetworkManager[1197]: <warn>  [1566455969.9438] acd[0x55a50c436c00,2]: couldn't init ACD for announcing addresses on interface 'enp5s0': Operazione non permessa
ago 22 08:39:29 manjaro-pc NetworkManager[1197]: <info>  [1566455969.9439] device (enp5s0): state change: ip-config -> ip-check (reason 'none', sys-iface-state: 'managed')
ago 22 08:39:29 manjaro-pc NetworkManager[1197]: <info>  [1566455969.9580] device (enp5s0): state change: ip-check -> secondaries (reason 'none', sys-iface-state: 'managed')
ago 22 08:39:29 manjaro-pc NetworkManager[1197]: <info>  [1566455969.9583] device (enp5s0): state change: secondaries -> activated (reason 'none', sys-iface-state: 'managed')

In the log the reson for the disconnection seems to be carrier-changed

You could try this to see if network manager is causing the problem.

Or, you could downgrade network manager, but downgrading is not something I ever recommend.

Please post the output of the following command:

cat /var/log/pacman.log | grep -i "d systemd (\|ed linux\|mware\|twork\|dkms ins\|a-nm\|nm-c\|ufw\|dhc\|dns\|wpa" | grep -v "head\|nvidia"  | tail -n 30

This will output a list of packages that were updated on your system recently that can affect networking.

1 Like

Thank you for the reply,
I'll try to replace Network manager with ConnMan if nothing else work

Here is the output of that command:

[2019-07-27 23:22] [ALPM-SCRIPTLET] ==> dkms install vmware-workstation/15.1.0_13591040 -k 5.2.2-1-MANJARO
[2019-07-28 08:20] [PACMAN] Running 'pacman -U --noconfirm --config /etc/pacman.conf -- /home/user/.cache/yay/vmware-workstation/vmware-workstation-15.1.0-3-x86_64.pkg.tar.xz'
[2019-07-28 08:20] [ALPM-SCRIPTLET] ==> dkms remove vmware-workstation/15.1.0_13591040 -k 5.1.19-1-MANJARO
[2019-07-28 08:20] [ALPM-SCRIPTLET] ==> dkms remove vmware-workstation/15.1.0_13591040 -k 5.2.2-1-MANJARO
[2019-07-28 08:21] [ALPM] upgraded vmware-workstation (15.1.0-2 -> 15.1.0-3)
[2019-07-28 08:21] [ALPM-SCRIPTLET] ==> dkms install vmware-workstation/15.1.0_13591040 -k 5.1.19-1-MANJARO
[2019-07-28 08:21] [ALPM-SCRIPTLET] ==> dkms install vmware-workstation/15.1.0_13591040 -k 5.2.2-1-MANJARO
[2019-08-03 09:00] [ALPM-SCRIPTLET] ==> dkms remove vmware-workstation/15.1.0_13591040 -k 5.1.19-1-MANJARO
[2019-08-03 09:00] [ALPM-SCRIPTLET] ==> dkms remove vmware-workstation/15.1.0_13591040 -k 5.2.2-1-MANJARO
[2019-08-03 09:01] [ALPM] upgraded linux51 (5.1.19-1 -> 5.1.21-1)
[2019-08-03 09:01] [ALPM] upgraded linux51-virtualbox-host-modules (6.0.10-2 -> 6.0.10-4)
[2019-08-03 09:01] [ALPM] upgraded linux52 (5.2.2-1 -> 5.2.4-1)
[2019-08-03 09:01] [ALPM] upgraded linux52-virtualbox-host-modules (6.0.10-2 -> 6.0.10-5)
[2019-08-03 09:01] [ALPM] upgraded networkmanager (1.18.0-1 -> 1.18.2-1)
[2019-08-03 09:01] [ALPM-SCRIPTLET] ==> dkms install vmware-workstation/15.1.0_13591040 -k 5.2.4-1-MANJARO
[2019-08-03 09:02] [ALPM-SCRIPTLET] ==> dkms install vmware-workstation/15.1.0_13591040 -k 5.1.21-1-MANJARO
[2019-08-21 19:19] [ALPM-SCRIPTLET] ==> dkms remove vmware-workstation/15.1.0_13591040 -k 5.2.4-1-MANJARO
[2019-08-21 19:19] [ALPM] upgraded ldns (1.7.0-4 -> 1.7.1-1)
[2019-08-21 19:19] [ALPM] upgraded linux52 (5.2.4-1 -> 5.2.8-1)
[2019-08-21 19:20] [ALPM] upgraded linux52-virtualbox-host-modules (6.0.10-5 -> 6.0.10-10)
[2019-08-21 19:20] [ALPM] upgraded networkmanager (1.18.2-1 -> 1.20.0-1)
[2019-08-21 19:20] [ALPM] upgraded networkmanager-openconnect (1.2.5dev+110+g524a2e0-2 -> 1.2.6-1)
[2019-08-21 19:20] [ALPM] upgraded plasma-nm (5.16.3-1 -> 5.16.4-1)
[2019-08-21 19:20] [ALPM-SCRIPTLET] ==> dkms install vmware-workstation/15.1.0_13591040 -k 5.2.8-1-MANJARO
[2019-08-21 19:39] [PACMAN] Running 'pacman -U --noconfirm --config /etc/pacman.conf -- /home/user/.cache/yay/vmware-workstation/vmware-workstation-15.1.0-4-x86_64.pkg.tar.xz'
[2019-08-21 19:39] [ALPM-SCRIPTLET] ==> dkms remove vmware-workstation/15.1.0_13591040 -k 5.1.21-1-MANJARO
[2019-08-21 19:40] [ALPM-SCRIPTLET] ==> dkms remove vmware-workstation/15.1.0_13591040 -k 5.2.8-1-MANJARO
[2019-08-21 19:40] [ALPM] upgraded vmware-workstation (15.1.0-3 -> 15.1.0-4)
[2019-08-21 19:40] [ALPM-SCRIPTLET] ==> dkms install vmware-workstation/15.1.0_13591040 -k 5.1.21-1-MANJARO
[2019-08-21 19:40] [ALPM-SCRIPTLET] ==> dkms install vmware-workstation/15.1.0_13591040 -k 5.2.8-1-MANJARO

I'll try to remove vmware-workstation and see if that work

Uninstalling vmware-workstation didn't fix the problem, any other possible solution?

For some reason it work fine if i set the speed to 100 Mbit/s
I tried to change the ethernet cable but the result is the same

Please post:

inxi - Fxxxz
System:    Host: manjaro-pc Kernel: 5.2.8-1-MANJARO x86_64 bits: 64 compiler: gcc v: 9.1.0 Desktop: KDE Plasma 5.16.4 
           tk: Qt 5.13.0 wm: kwin_x11 dm: SDDM Distro: Manjaro Linux 
Machine:   Type: Desktop Mobo: ASUSTeK model: ROG ZENITH EXTREME v: Rev 1.xx serial: <filter> UEFI: American Megatrends 
           v: 1701 date: 01/09/2019 
CPU:       Topology: 16-Core (2-Die) model: AMD Ryzen Threadripper 2950X bits: 64 type: MT MCP MCM arch: Zen+ rev: 2 
           L2 cache: 8192 KiB 
           flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm bogomips: 224050 
           Speed: 2278 MHz min/max: 2200/3500 MHz boost: enabled Core speeds (MHz): 1: 2148 2: 2062 3: 1888 4: 1893 5: 1889 
           6: 1975 7: 1889 8: 2196 9: 2233 10: 2122 11: 4269 12: 1981 13: 3756 14: 1742 15: 1740 16: 1742 17: 2363 18: 1984 
           19: 1981 20: 1890 21: 1890 22: 1888 23: 2071 24: 1896 25: 1886 26: 2025 27: 1743 28: 1748 29: 1749 30: 2339 
           31: 1888 32: 1887 
Graphics:  Device-1: NVIDIA GP104 [GeForce GTX 1070 Ti] vendor: Gigabyte driver: vfio-pci v: 0.2 bus ID: 0a:00.0 
           chip ID: 10de:1b82 
           Device-2: NVIDIA GP107 [GeForce GTX 1050] vendor: Gigabyte driver: nvidia v: 430.40 bus ID: 41:00.0 
           chip ID: 10de:1c81 
           Display: x11 server: X.Org 1.20.5 driver: nvidia compositor: kwin_x11 resolution: 1920x1080~60Hz, 1920x1080~60Hz 
           OpenGL: renderer: GeForce GTX 1050/PCIe/SSE2 v: 4.6.0 NVIDIA 430.40 direct render: Yes 
Audio:     Device-1: NVIDIA GP104 High Definition Audio vendor: Gigabyte driver: vfio-pci v: 0.2 bus ID: 0a:00.1 
           chip ID: 10de:10f0 
           Device-2: Advanced Micro Devices [AMD] Family 17h HD Audio vendor: ASUSTeK driver: snd_hda_intel v: kernel 
           bus ID: 0c:00.3 chip ID: 1022:1457 
           Device-3: NVIDIA GP107GL High Definition Audio vendor: Gigabyte driver: snd_hda_intel v: kernel bus ID: 41:00.1 
           chip ID: 10de:0fb9 
           Device-4: Logitech type: USB driver: hid-generic,snd-usb-audio,usbhid bus ID: 7-4:4 chip ID: 046d:0a5c 
           serial: <filter> 
           Sound Server: ALSA v: k5.2.8-1-MANJARO 
Network:   Device-1: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter vendor: ASUSTeK driver: ath10k_pci v: kernel 
           bus ID: 03:00.0 chip ID: 168c:003e 
           IF: wlp3s0 state: down mac: <filter> 
           Device-2: Wilocity Wil6200 802.11ad Wireless Network Adapter driver: wil6210 v: kernel bus ID: 04:00.0 
           chip ID: 1ae9:0310 
           IF: wlp4s0 state: down mac: <filter> 
           Device-3: Intel I211 Gigabit Network vendor: ASUSTeK driver: igb v: 5.6.0-k port: 2000 bus ID: 05:00.0 
           chip ID: 8086:1539 
           IF: enp5s0 state: up speed: 1000 Mbps duplex: full mac: <filter> 
           IF-ID-1: lxdbr0 state: up speed: N/A duplex: N/A mac: <filter> 
           IF-ID-2: vethf17cdaa8 state: up speed: 10000 Mbps duplex: full mac: <filter> 
           IF-ID-3: virbr1 state: down mac: <filter> 
           IF-ID-4: virbr1-nic state: down mac: <filter> 
           IF-ID-5: vmnet1 state: unknown speed: N/A duplex: N/A mac: <filter> 
           IF-ID-6: vmnet8 state: unknown speed: N/A duplex: N/A mac: <filter> 
Drives:    Local Storage: total: 11.39 TiB used: 2.87 TiB (25.2%) 
           ID-1: /dev/nvme0n1 vendor: Samsung model: SSD 970 PRO 1TB size: 953.87 GiB speed: 31.6 Gb/s lanes: 4 
           serial: <filter> rev: 1B2QEXP7 scheme: GPT 
           ID-2: /dev/sda vendor: Samsung model: SSD 840 EVO 500GB size: 465.76 GiB speed: 6.0 Gb/s serial: <filter> rev: DB6Q 
           scheme: GPT 
           ID-3: /dev/sdb vendor: Western Digital model: WD5002AALX-00J37A0 size: 465.76 GiB speed: 6.0 Gb/s serial: <filter> 
           rev: 1H15 scheme: GPT 
           ID-4: /dev/sdc vendor: Western Digital model: WD1002FAEX-00Y9A0 size: 931.51 GiB speed: 6.0 Gb/s serial: <filter> 
           rev: 1D05 scheme: MBR 
           ID-5: /dev/sdd vendor: Western Digital model: WD60EFRX-68L0BN1 size: 5.46 TiB speed: 6.0 Gb/s rotation: 5700 rpm 
           serial: <filter> rev: 0A82 scheme: GPT 
           ID-6: /dev/sde vendor: Samsung model: SSD 850 EVO 500GB size: 465.76 GiB speed: 6.0 Gb/s serial: <filter> rev: 2B6Q 
           scheme: GPT 
           ID-7: /dev/sdf type: USB vendor: Western Digital model: WD30 EZRZ-00Z5HB0 size: 2.73 TiB serial: <filter> rev: 8102 
Partition: ID-1: / size: 937.40 GiB used: 396.01 GiB (42.2%) fs: ext4 dev: /dev/dm-1 
           ID-2: /boot size: 511.0 MiB used: 143.7 MiB (28.1%) fs: vfat dev: /dev/nvme0n1p1 
Sensors:   System Temperatures: cpu: 43.0 C mobo: N/A gpu: nvidia temp: 59 C 
           Fan Speeds (RPM): cpu: 0 gpu: nvidia fan: 0% 
Info:      Processes: 616 Uptime: 28m Memory: 31.26 GiB used: 3.67 GiB (11.7%) Init: systemd v: 242 Compilers: gcc: 9.1.0 
           clang: 8.0.1 Shell: zsh v: 5.7.1 running in: konsole inxi: 3.0.35

The speed is 1000 because if i disconnect and reconnect manually it work even at 1000

Do you have multiple AP's in your vicinity. You might want to try locking your BSSID in network manager to the AP with the strongest signal.

The WiFi is disabled, i'm using the ethernet card

If you are using your Ethernet then I would try downgrading your Intel firmware.

If that changes nothing I would test downgrading network manager simply as a test.

Also have you tested your connection with the speed set to auto-negotiation.

Perhaps also test kernel 5.3 and the real time 5.0 kernel.

Downgrading to networkmanager-1.18.0-1 fix the problem.

With the newest version i tried both auto negotiation and manual set at 1000 Mbit and it didn't work
Changing kernel didn't work either

I'll try to report the problem to the NetworkManager repository ( https://gitlab.freedesktop.org/NetworkManager/NetworkManager/ )

Thank you for your help

1 Like

Yes, I thought it might be NM and that is why I mentioned downgrading it in my first post. NM Version 1.20 definitely has some bugs with it. It killed my wifi on a recent update, (so I switched to connman).

It is best to avoid partial upgrades.

Glad that fixed you up.

This network Manager v1.20 bug has so far been found to exhibit these symptoms:


Wifi connections are visible but cannot be connected to.

Impacts NFS connectivity.

Network disconnects and reconnects repeatedly in a loop.


You may downgrade Network Manager or switch to an alternate manager such as ConnMan or WICD To correct this.

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