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Topic: [SOLVED]WiFi connection unstable and randomly stops working after system upgrade (Read 622 times) previous topic - next topic
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[SOLVED]WiFi connection unstable and randomly stops working after system upgrade

Wifi connection is unstable and randomly stops working and resetting it by turning wifi off/on via physical button resolves the issue temporarily.

Issue can be evoked by trying to download any large file via the browser - after 1 to 10 minutes of download ksoftirqd/o process kicks in, starts consuming 10% of CPU and download speed goes to 0. Only turning the wifi off/on again brings the connection back.

Issue began a few weeks ago after standard system upgrade. I've also change my essid name and wifi password but that seems irrelevant since reverting them doesn't help with the problem.

What I've tried so far with 0 impact on the problem :

- explicitly installed and enabled dhcpcd-runit
- disabled ufw
- reverted wifi essid/password
- rebooted the wifi router
- Disabled the 5GHz wireless signal to only have  2.4GHz
- confirmed, no other devices are affected
- specified the ip address of my router IP 192.168.0.1 in dhcpcd.conf
- disabled 'noipv4ll' in dhcpcd.conf
- added nameserver 1.1.1.1 to /etc/resolve.conf
- changed multiple nm-connection-editor settings and reverted them afterwards
- removed NetworkManager completely but unable to connect wifi at all afterwards, so installaed it back

Content of my /etc/resolve.conf :
Code: [Select]
 
# Generated by NetworkManager
search home
nameserver 192.168.0.1
nameserver 2001:730:3ec2::11
nameserver 2001:730:3ec2::10

The following outputs appear during the problem:

Code: [Select]
ping pong.com
ping: pong.com: Temporary failure in name resolution

Code: [Select]
ping 192.168.0.1
PING 192.168.0.1 (192.168.0.1) 56(84) bytes of data.
From 192.168.0.241 icmp_seq=18 Destination Host Unreachable

Code: [Select]
nmcli general
STATE                  CONNECTIVITY  WIFI-HW  WIFI     WWAN-HW  WWAN
connected (site only)  limited       enabled  enabled  enabled  enabled

Code: [Select]
htop:
root        20   0 12528  9168  8080 S  0.0  0.1  0:01.14 /usr/bin/wpa_supplicant -u
1232 root        20   0  391M 19168 15448 S  0.0  0.1  0:02.12 NetworkManager -n
2425 box         20   0  376M  9116  7764 S  0.0  0.1  0:00.04 /usr/lib/gvfsd-network --spawner :1.4 /org/gtk/gvfs/exec_spaw/1
1205 root        20   0  2524   928   840 S  0.0  0.0  0:00.00 runsv NetworkManager
 

Re: WiFi connection unstable and randomly stops working after system upgrade

Reply #2 –
Now that is interesting,

With linux-lts the connection is just as slow and unstable as with the standard kernel, large downloads fail and connection stops working as soon as the ksoftirqd/1 process shows up.

However with linux-zen kernel the connection is 100% stable, faster than ever, large downloads complete without issue and ksoftirqd/1 process never shows up. In fact the whole system feels much faster.

Considering my laptop is from 2013  I would think the opposite.

Anyhow, thank you for saving my weekend nous!!!