| 2020-12-28 22:35:42 |
Matthias Kuntze |
description |
There are reproduce-able WiFi aborts with 20.04.1 LTS since update to kernel 5.4.0-56.
Behaviour: nm-applet shows a window to enter the WLAN key that is pre-filled. Hitting the "Connect" button reconnects the WiFi network for a small period.
The error occurs sometimes very often (e.g. 10 times/minute) or seldom (only one per day). You can see it in /var/log/syslog at the entry
>>> wpa_supplicant[xxx]: l2_packet_send - sendto: No buffer space available
As a result 4-Way-Handshake fails and after disconnection the new (old) key is requestet.
>>> wpa_supplicant[xxx]: wlp3s0: WPA: 4-Way Handshake failed - pre-shared key may be incorrect
>>> NetworkManager[xxx]: <info> [xxx] device (wlp3s0): Activation: (wifi) disconnected during association, asking for new key
There are a lot of people having this problem (see discussion in german moderated forum:
>>> https://forum.ubuntuusers.de/topic/funknetz-schluessel-werden-staendig-abgefragt
See also BUG #1908823 and question #694566
>>> https://bugs.launchpad.net/ubuntu/+source/network-manager-applet/+bug/1908823
>>> https://answers.launchpad.net/ubuntu/+question/694566 |
There are reproduce-able WiFi aborts with 20.04.1 LTS since update to kernel 5.4.0-56.
Behaviour: nm-applet shows a window to enter the WLAN key that is pre-filled. Hitting the "Connect" button reconnects the WiFi network for a small period.
The error occurs sometimes very often (e.g. 10 times/minute) or seldom (only one per day). You can see it in /var/log/syslog at the entry
>>> wpa_supplicant[xxx]: l2_packet_send - sendto: No buffer space available
As a result 4-Way-Handshake fails and after disconnection the new (old) key is requested.
>>> wpa_supplicant[xxx]: wlp3s0: WPA: 4-Way Handshake failed - pre-shared key may be incorrect
>>> NetworkManager[xxx]: <info> [xxx] device (wlp3s0): Activation: (wifi) disconnected during association, asking for new key
There are a lot of people having this problem (see discussion in german moderated forum:
>>> https://forum.ubuntuusers.de/topic/funknetz-schluessel-werden-staendig-abgefragt
See also BUG #1908823 and question #694566
>>> https://bugs.launchpad.net/ubuntu/+source/network-manager-applet/+bug/1908823
>>> https://answers.launchpad.net/ubuntu/+question/694566 |
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