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when I start my arch linux install on my thinkpad x390, I can not connect to the internet. It is because dhcdpd service failed. This is systemd log:

john@arch-thinkpad ~> sudo systemctl status [email protected]
× [email protected] - dhcpcd on wlan0
     Loaded: loaded (/usr/lib/systemd/system/[email protected]; enabled; vendor preset: disabled)
     Active: failed (Result: exit-code) since Wed 2021-10-06 08:23:52 CEST; 3min 31s ago
    Process: 524 ExecStart=/usr/bin/dhcpcd -q -w wlan0 (code=exited, status=1/FAILURE)
        CPU: 35ms

říj 06 08:23:52 arch-thinkpad dhcpcd[531]: wlan0: carrier acquired
říj 06 08:23:52 arch-thinkpad dhcpcd[531]: wlan0: IAID 54:b2:f8:91
říj 06 08:23:52 arch-thinkpad dhcpcd[531]: wlan0: adding address fe80::a212:1e5d:56d8:6d6f
říj 06 08:23:52 arch-thinkpad dhcpcd[531]: ipv6_addaddr1: No such device
říj 06 08:23:52 arch-thinkpad dhcpcd[531]: wlan0: carrier lost
říj 06 08:23:52 arch-thinkpad dhcpcd[524]: ipv6_addaddr1: No such device
říj 06 08:23:52 arch-thinkpad dhcpcd[531]: wlan0: removing interface
říj 06 08:23:52 arch-thinkpad systemd[1]: [email protected]: Control process exited, code=exited, status=1/FAILURE
říj 06 08:23:52 arch-thinkpad systemd[1]: [email protected]: Failed with result 'exit-code'.
říj 06 08:23:52 arch-thinkpad systemd[1]: Stopped dhcpcd on wlan0.

in dmesg -w is this:

[    2.387933] iwlwifi 0000:00:14.3: iwlmvm doesn't allow to disable HW crypto, check swcrypto module parameter

in /etc/modprobe.d/iwlwifi.conf is this:

options iwlwifi 11n_disable=1 swcrypto=1

This is output of ip monitor link if I let it run for few hours:

6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state DORMANT group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
Deleted 5: wwp0s20f0u7: <BROADCAST,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN group default
    link/ether ea:dd:ce:51:3f:86 brd ff:ff:ff:ff:ff:ff
7: wwan0: <BROADCAST,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN group default
    link/ether b2:ad:b0:ba:c5:b7 brd ff:ff:ff:ff:ff:ff
7: wwan0: <BROADCAST,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN group default
    link/ether ea:dd:ce:51:3f:86 brd ff:ff:ff:ff:ff:ff
7: wwp0s20f0u7: <BROADCAST,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN group default
    link/ether ea:dd:ce:51:3f:86 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state DORMANT group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
Deleted 7: wwp0s20f0u7: <BROADCAST,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN group default
    link/ether ea:dd:ce:51:3f:86 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state DORMANT group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
8: wwan0: <BROADCAST,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN group default
    link/ether b2:ad:b0:ba:c5:b7 brd ff:ff:ff:ff:ff:ff
8: wwan0: <BROADCAST,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN group default
    link/ether ea:dd:ce:51:3f:86 brd ff:ff:ff:ff:ff:ff
8: wwp0s20f0u7: <BROADCAST,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN group default
    link/ether ea:dd:ce:51:3f:86 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
Deleted 8: wwp0s20f0u7: <BROADCAST,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN group default
    link/ether ea:dd:ce:51:3f:86 brd ff:ff:ff:ff:ff:ff
9: wwan0: <BROADCAST,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN group default
    link/ether b2:ad:b0:ba:c5:b7 brd ff:ff:ff:ff:ff:ff
9: wwan0: <BROADCAST,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN group default
    link/ether ea:dd:ce:51:3f:86 brd ff:ff:ff:ff:ff:ff
9: wwp0s20f0u7: <BROADCAST,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN group default
    link/ether ea:dd:ce:51:3f:86 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state DORMANT group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP>
    link/ether
Deleted 9: wwp0s20f0u7: <BROADCAST,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN group default
    link/ether ea:dd:ce:51:3f:86 brd ff:ff:ff:ff:ff:ff
10: wwan0: <BROADCAST,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN group default
    link/ether b2:ad:b0:ba:c5:b7 brd ff:ff:ff:ff:ff:ff
10: wwan0: <BROADCAST,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN group default
    link/ether ea:dd:ce:51:3f:86 brd ff:ff:ff:ff:ff:ff
10: wwp0s20f0u7: <BROADCAST,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN group default
    link/ether ea:dd:ce:51:3f:86 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state DORMANT group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state DORMANT group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
q6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state DORMANT group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state DORMANT group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
Deleted 10: wwp0s20f0u7: <BROADCAST,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN group default
    link/ether ea:dd:ce:51:3f:86 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state DORMANT group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state DORMANT group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state DORMANT group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state DORMANT group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state DORMANT group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
11: wwan0: <BROADCAST,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN group default
    link/ether b2:ad:b0:ba:c5:b7 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state DORMANT group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
11: wwan0: <BROADCAST,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN group default
    link/ether ea:dd:ce:51:3f:86 brd ff:ff:ff:ff:ff:ff
11: wwp0s20f0u7: <BROADCAST,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN group default
    link/ether ea:dd:ce:51:3f:86 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP>
    link/ether
6: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state DORMANT group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff
6: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether d0:ab:d5:52:c8:a8 brd ff:ff:ff:ff:ff:ff

When I run sudo systemctl restart iwd.service && sudo dhcpcd wlan0 it starts working again.

What can cause this problem and how can I fix it ?

5
  • 1
    You could keep a ip monitor link running on a separate shell to see if wlan0 interface actually disappears (or get renamed or...). Then dmesg (or dmesg -w) to check for kernel messages could also help.
    – A.B
    Commented Oct 6, 2021 at 6:39
  • @A.B I added information base on your comment. Do you have any suggestions how to deal with it ? Commented Oct 6, 2021 at 8:29
  • 1
    I don't know more beside the two suggestions I wrote. I rather doubt the message about disabling hw crypto is related to your problems.
    – A.B
    Commented Oct 6, 2021 at 8:35
  • @A.B I added ip monitor link output Commented Oct 6, 2021 at 12:54
  • It didn't expose any system anomaly (wlan0 never disappears). I don't have other ideas.
    – A.B
    Commented Oct 6, 2021 at 13:10

1 Answer 1

0

I ran these commands, and the issue is gone for me.

sudo systemctl disable [email protected]
sudo systemctl enable dhcpcd
reboot

If the above solution doesn't work. You can disable dhcpcd, and use network manager instead. Here is link to instal network manager.

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