Bad internet connection

[Lachu]

I have problems in recent days. When trying to reach some servers, connection was broken sometimes. It touch only my laptop. For example I cannot proceed adding games to library in Epic Store. No matter if I use official client or Firefox. But, when I use mobile phone and web browser on it, everything goes perfect. I use the same network on both devices.

How to diagnose and what could be broken? Thanks!

[deano_ferrari]

Your description is a bit vague. Have you examined the journal to start with? For example (assuming NetworkManager manages your connectivity)…
sudo journalctl -fu NetworkManager

[dcurtisfra]

@Lachu:

The following will provide more details related to your system’s network connections –

# systemctl status network.service

• Please edit to mask your host name before you post the output.

You mentioned that your mobile telephone is not exhibiting these issues –

• Is your mobile telephone connected to the Internet via the SIM card’s 3G/4G/5G network service or, your WLAN/WiFi?

Assuming WLAN/WiFi, what does your GUI Desktop (KDE Plasma or GNOME) show with respect to your local WLAN?

Also, what are CLI tools such as “iwlist” and “nmcli” indicating with respect to signal strength and Wi-Fi standards – Wi-Fi 5 or 6 or 7 or less?

[Lachu]

It still sometimes occur.

> sudo journalctl -fu NetworkManager
[sudo] hasło użytkownika root: 
wrz 04 15:37:32 opensuse NetworkManager[1337]: <info>  [1756993052.7191] dhcp4 (wlp2s0): state changed new lease, address=192.168.0.137
wrz 04 15:37:32 opensuse NetworkManager[1337]: <info>  [1756993052.7223] policy: set 'Coffe_Heaven4' (wlp2s0) as default for IPv4 routing and DNS
wrz 04 15:37:32 opensuse NetworkManager[1337]: <info>  [1756993052.7288] device (wlp2s0): state change: ip-config -> ip-check (reason 'none', managed-type: 'full')
wrz 04 15:37:32 opensuse NetworkManager[1337]: <info>  [1756993052.7947] device (wlp2s0): state change: ip-check -> secondaries (reason 'none', managed-type: 'full')
wrz 04 15:37:32 opensuse NetworkManager[1337]: <info>  [1756993052.7948] device (wlp2s0): state change: secondaries -> activated (reason 'none', managed-type: 'full')
wrz 04 15:37:32 opensuse NetworkManager[1337]: <info>  [1756993052.7950] manager: NetworkManager state is now CONNECTED_SITE
wrz 04 15:37:32 opensuse NetworkManager[1337]: <info>  [1756993052.7960] device (wlp2s0): Activation: successful, device activated.
wrz 04 15:37:33 opensuse NetworkManager[1337]: <info>  [1756993053.0163] manager: NetworkManager state is now CONNECTED_GLOBAL
wrz 04 15:47:32 opensuse NetworkManager[1337]: <info>  [1756993652.8307] manager: NetworkManager state is now CONNECTED_SITE
wrz 04 15:47:34 opensuse NetworkManager[1337]: <info>  [1756993654.0643] manager: NetworkManager state is now CONNECTED_GLOBAL

For me there is no important information.

Bellow I do not see anything related also:

> sudo systemctl status network.service
● NetworkManager.service - Network Manager
     Loaded: loaded (/usr/lib/systemd/system/NetworkManager.service; enabled; preset: disabled)
     Active: active (running) since Thu 2025-09-04 15:36:51 CEST; 15min ago
 Invocation: d3ceff2f7e144666a324e77ac5f27b29
       Docs: man:NetworkManager(8)
   Main PID: 1337 (NetworkManager)
      Tasks: 4 (limit: 18197)
        CPU: 1.155s
     CGroup: /system.slice/NetworkManager.service
             └─1337 /usr/sbin/NetworkManager --no-daemon

wrz 04 15:37:32 opensuse NetworkManager[1337]: <info>  [1756993052.7191] dhcp4 (wlp2s0): state changed new lease, address=192.168.0.137
wrz 04 15:37:32 opensuse NetworkManager[1337]: <info>  [1756993052.7223] policy: set 'Coffe_Heaven4' (wlp2s0) as default for IPv4 routing and DNS
wrz 04 15:37:32 opensuse NetworkManager[1337]: <info>  [1756993052.7288] device (wlp2s0): state change: ip-config -> ip-check (reason 'none', managed-type: 'full')
wrz 04 15:37:32 opensuse NetworkManager[1337]: <info>  [1756993052.7947] device (wlp2s0): state change: ip-check -> secondaries (reason 'none', managed-type: 'full')
wrz 04 15:37:32 opensuse NetworkManager[1337]: <info>  [1756993052.7948] device (wlp2s0): state change: secondaries -> activated (reason 'none', managed-type: 'full')
wrz 04 15:37:32 opensuse NetworkManager[1337]: <info>  [1756993052.7950] manager: NetworkManager state is now CONNECTED_SITE
wrz 04 15:37:32 opensuse NetworkManager[1337]: <info>  [1756993052.7960] device (wlp2s0): Activation: successful, device activated.
wrz 04 15:37:33 opensuse NetworkManager[1337]: <info>  [1756993053.0163] manager: NetworkManager state is now CONNECTED_GLOBAL
wrz 04 15:47:32 opensuse NetworkManager[1337]: <info>  [1756993652.8307] manager: NetworkManager state is now CONNECTED_SITE
wrz 04 15:47:34 opensuse NetworkManager[1337]: <info>  [1756993654.0643] manager: NetworkManager state is now CONNECTED_GLOBAL
slawomir@opensuse:~> 

[marel]

I see you have a wireless connection (wlp2s0) so that it also prone to wireless disturbance like Bluetooth, Zigbee etc.:

• Is there a possibility for you to use a Ethernet connection? If so please give that a try so we know there is no other problem.
• Wireless connections are hard to diagnose, given that it is a laptop please move it close to the Access Point, is then the connection good?

[dcurtisfra]

@Lachu:
@ShieldBlock:

Please install the “btop” package from the main openSUSE repository.
Let it run while using the applications where you’re experiencing the issues you’re describing –

• When the issue appears, please check the “btop” (Terminal Window – CLI) display for anything which is suddenly consuming excessive system resources.

[udarh9]

@Lachu If there are many devices that use the same channel, even though you signal strength is perfect you’ll still have problems on the quality(i.e too much noise). In my case changing to another one like 40 in place of 132 for example did the trick. It could be that the driver/kernel module you are using doesn’t “like” the channel you are currently using so much. So try and play around with that in your modem/ISP router(your internet provider’s equipment) and see if anything improves.