Wifi connected but no internet available

Hello everyone
I installed manjaro kde on another laptop but I have a weird problem
First, I updated system to the last stable versions of all apps. I'm connected to the wifi and it works well for a minute, but then it drops off.
And second, I've read this link Turn off MAC randomizer but I came up with no luck.
Here is the specs of the laptop:

System:    Kernel: 5.6.16-1-MANJARO x86_64 bits: 64 compiler: gcc v: 10.1.0 Desktop: KDE Plasma 5.18.5 tk: Qt 5.15.0 
           wm: kwin_x11 dm: SDDM Distro: Manjaro Linux 
Machine:   Type: Laptop System: ASUSTeK product: X450LD v: 1.0 serial: <root required> 
           Mobo: ASUSTeK model: X450LD v: 1.0 serial: <root required> BIOS: American Megatrends v: X450LD.204 date: 03/13/2014 
Battery:   ID-1: BAT0 charge: 6.6 Wh condition: 28.6/37.4 Wh (76%) volts: 14.4/14.4 model: ASUSTeK X550A26 type: Li-ion 
           serial:   status: Discharging 
CPU:       Topology: Dual Core model: Intel Core i7-4500U bits: 64 type: MT MCP arch: Haswell rev: 1 L2 cache: 4096 KiB 
           flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 19162 
           Speed: 798 MHz min/max: 800/3000 MHz Core speeds (MHz): 1: 798 2: 798 3: 798 4: 798 
Graphics:  Device-1: Intel Haswell-ULT Integrated Graphics vendor: ASUSTeK driver: i915 v: kernel bus ID: 00:02.0 
           chip ID: 8086:0a16 
           Device-2: NVIDIA GF117M [GeForce 610M/710M/810M/820M / GT 620M/625M/630M/720M] vendor: ASUSTeK driver: nouveau 
           v: kernel bus ID: 04:00.0 chip ID: 10de:1140 
           Display: x11 server: X.Org 1.20.8 driver: intel,nouveau unloaded: modesetting alternate: fbdev,nv,vesa 
           compositor: kwin_x11 resolution: 1366x768~60Hz 
           OpenGL: renderer: Mesa DRI Intel HD Graphics 4400 (HSW GT2) v: 4.5 Mesa 20.0.7 compat-v: 3.0 direct render: Yes 
Audio:     Device-1: Intel Haswell-ULT HD Audio driver: snd_hda_intel v: kernel bus ID: 00:03.0 chip ID: 8086:0a0c 
           Device-2: Intel 8 Series HD Audio vendor: ASUSTeK driver: snd_hda_intel v: kernel bus ID: 00:1b.0 
           chip ID: 8086:9c20 
           Sound Server: ALSA v: k5.6.16-1-MANJARO 
Network:   Device-1: Qualcomm Atheros QCA8171 Gigabit Ethernet vendor: ASUSTeK driver: alx v: kernel port: e000 
           bus ID: 02:00.0 chip ID: 1969:10a1 
           IF: enp2s0 state: down mac: 10:c3:7b:b1:00:c7 
           Device-2: Ralink RT3290 Wireless 802.11n 1T/1R PCIe vendor: Foxconn driver: rt2800pci v: 2.3.0 port: e000 
           bus ID: 03:00.0 chip ID: 1814:3290 
           IF: wlp3s0f0 state: up mac: 54:35:30:b1:11:c5 
Drives:    Local Storage: total: 465.76 GiB used: 19.37 GiB (4.2%) 
           ID-1: /dev/sda vendor: Seagate model: ST500LT012-1DG142 size: 465.76 GiB speed: 6.0 Gb/s rotation: 5400 rpm 
           serial: SBY4L65W rev: SDM1 scheme: MBR 
Partition: ID-1: / size: 444.90 GiB used: 19.37 GiB (4.4%) fs: ext4 dev: /dev/sda1 
           ID-2: swap-1 size: 12.75 GiB used: 0 KiB (0.0%) fs: swap dev: /dev/sda2 
Sensors:   System Temperatures: cpu: 45.0 C mobo: N/A 
           Fan Speeds (RPM): cpu: 3300 
Info:      Processes: 182 Uptime: 14m Memory: 11.59 GiB used: 960.3 MiB (8.1%) Init: systemd v: 245 Compilers: gcc: 10.1.0 
           Shell: bash v: 5.0.17 running in: konsole inxi: 3.0.37

Sporadic wi-fi disconnects can be caused by a lot of things, and can be tricky to figure out. A good place to start investigating in general is the Arch Linux Wiki, and indeed they do have a comprehensive article on Network configuration/Wireless that provides a lot of insight.

Section 6.6 provides some help directly on the disconnect issues.

Also, of course - our own forum often has some help:
https://archived.forum.manjaro.org/search?q=Qualcomm%20Atheros

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Thanks @Ferdinand
I just solved it on my own
Kernel was the problem
I guess that's because the laptop is considerably old
By the way, I installed kernel 4.19 and it's working all right :slight_smile:

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