Powering through dock eventualy freezes NetworkManager

firstly sorry for my english and now … this.

I have realy wierd issue, I bought a dock with a usb-C charger from i-tech “C31DUALDPDOCKPD65W”.

  • When I use just dock, everything is OK.
  • When I use just the USB-C charger everything is OK.
  • But when I charge notebook using dock with this charger, in a time 10minutes to 5 hours, my internet connection stops working.

Trying to do anything with NetworkManager.service just freezes whatever was used (console, system settigns, …).
Weird part is that the interenet is actualy working, since when I have active RDP connection to pc at office, connection still works and i can use remote desktop, like nothing is going on.

I have tried to change kernel but that did not helped.

My notebook is acer swift 3 sf313-52
OS is quite new, I was forced to reinstall. (One time, restart reseted BIOS, which set my drive to Optane and after seting all up, I was not able to boot to linux anymore)

Results of inxi -Fza:

System: Kernel: 5.8.16-2-MANJARO x86_64 bits: 64 compiler: N/A
parameters: BOOT_IMAGE=/boot/vmlinuz-5.8-x86_64 root=UUID=8cf2582a-3224-40a2-9fb5-d6d2bbe08825 rw quiet apparmor=1
security=apparmor udev.log_priority=3
Desktop: KDE Plasma 5.19.5 tk: Qt 5.15.1 wm: kwin_x11 dm: SDDM Distro: Manjaro Linux
Machine: Type: Laptop System: Acer product: Swift SF313-52 v: V1.02 serial: Chassis: type: 10 serial:
Mobo: IL model: Skol_IL v: V1.02 serial: UEFI: Insyde v: 1.02 date: 12/07/2019
Battery: ID-1: BAT0 charge: 51.5 Wh condition: 51.5/56.0 Wh (92%) volts: 17.1/15.4 model: SMP KT00407008 AP18C7M
type: Li-ion serial: status: Full cycles: 23
CPU: Topology: Quad Core model: Intel Core i5-1035G4 bits: 64 type: MT MCP arch: Ice Lake family: 6 model-id: 7E (126)
stepping: 5 microcode: 78 L2 cache: 6144 KiB
flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 23968
Speed: 713 MHz min/max: 400/3700 MHz Core speeds (MHz): 1: 763 2: 818 3: 838 4: 956 5: 848 6: 725 7: 707 8: 911
Vulnerabilities: Type: itlb_multihit status: KVM: VMX disabled
Type: l1tf status: Not affected
Type: mds status: Not affected
Type: meltdown status: Not affected
Type: spec_store_bypass mitigation: Speculative Store Bypass disabled via prctl and seccomp
Type: spectre_v1 mitigation: usercopy/swapgs barriers and __user pointer sanitization
Type: spectre_v2 mitigation: Enhanced IBRS, IBPB: conditional, RSB filling
Type: srbds status: Not affected
Type: tsx_async_abort status: Not affected
Graphics: Device-1: Intel Iris Plus Graphics G4 vendor: Acer Incorporated ALI driver: i915 v: kernel bus ID: 00:02.0
chip ID: 8086:8a5a
Device-2: Chicony HD WebCam type: USB driver: uvcvideo bus ID: 3-6:4 chip ID: 04f2:b5c5 serial:
Display: x11 server: X. Org 1.20.9 compositor: kwin_x11 driver: intel unloaded: modesetting alternate: fbdev,vesa
display ID: :0 screens: 1
Screen-1: 0 s-res: 4176x1504 s-dpi: 96 s-size: 1102x397mm (43.4x15.6") s-diag: 1171mm (46.1")
Monitor-1: eDP1 res: 2256x1504 hz: 60 dpi: 205 size: 280x190mm (11.0x7.5") diag: 338mm (13.3")
Monitor-2: DP1-3 res: 1920x1200 hz: 75 dpi: 90 size: 540x340mm (21.3x13.4") diag: 638mm (25.1")
OpenGL: renderer: Mesa Intel Iris Plus Graphics (ICL GT1.5) v: 4.6 Mesa 20.1.8 direct render: Yes
Audio: Device-1: Intel Smart Sound Audio vendor: Acer Incorporated ALI driver: snd_hda_intel v: kernel
alternate: snd_sof_pci bus ID: 00:1f.3 chip ID: 8086:34c8
Device-2: C-Media Audio Adapter (Unitek Y-247A) type: USB driver: hid-generic,snd-usb-audio,usbhid
bus ID: 3-3.3.4:121 chip ID: 0d8c:0014
Sound Server: ALSA v: k5.8.16-2-MANJARO
Network: Device-1: Intel Killer Wi-Fi 6 AX1650i 160MHz Wireless Network Adapter driver: iwlwifi v: kernel port: 3000
bus ID: 00:14.3 chip ID: 8086:34f0
IF: wlp0s20f3 state: up mac:
Device-2: Realtek RTL8153 Gigabit Ethernet Adapter type: USB driver: r8152 bus ID: 2-1.2.3:39 chip ID: 0bda:8153
IF: enp0s13f0u1u2u3 state: down mac:
IF-ID-1: ppp0 state: unknown speed: N/A duplex: N/A mac: N/A
Drives: Local Storage: total: 476.94 GiB used: 209.08 GiB (43.8%)
SMART Message: Unable to run smartctl. Root privileges required.
ID-1: /dev/nvme0n1 vendor: Kingston model: RBUSNS8154P3512GJ1 size: 476.94 GiB block size: physical: 512 B
logical: 512 B speed: 15.8 Gb/s lanes: 2 serial: rev: E8FK12.3 scheme: GPT
Partition: ID-1: / raw size: 119.71 GiB size: 117.33 GiB (98.01%) used: 18.40 GiB (15.7%) fs: ext4 dev: /dev/nvme0n1p5
Swap: Alert: No Swap data was found.
Sensors: System Temperatures: cpu: 56.0 C mobo: N/A
Fan Speeds (RPM): N/A
Info: Processes: 278 Uptime: 5d 5h 44m Memory: 15.32 GiB used: 5.01 GiB (32.7%) Init: systemd v: 246 Compilers:
gcc: 10.2.0 Packages: pacman: 1266 lib: 366 flatpak: 0 Shell: Bash v: 5.0.18 running in: yakuake inxi: 3.1.05

Please help me, I just do not get, what is going on there.

You can start by checking journalctl when you connect it to AC through the dock, to see if anything relevant pops up.