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#1 2023-05-07 13:41:19

Kaydemir
Member
Registered: 2022-09-06
Posts: 5

Wi-fi disconnects and re-connects immediately once in a while.

In like, once in an hour, or just random idk not too often, my wifi disconnects for like 5 seconds and re-connects again. This only happens on my arch linux laptop, this happens in 2 different houses (different modems) i've stayed at. How do I fix this ? I'll just give some outputs just in case.

Here's the relevant journalctl output when this happens:

May 07 16:05:29 archlinux systemd-networkd[608]: wlan0: Lost carrier
May 07 16:05:29 archlinux systemd-networkd[608]: wlan0: DHCP lease lost
May 07 16:05:29 archlinux iwd[612]: Received Deauthentication event, reason: 4, from_ap: false
May 07 16:05:29 archlinux systemd-networkd[608]: wlan0: DHCPv6 lease lost
May 07 16:05:29 archlinux systemd-timesyncd[500]: No network connectivity, watching for changes.
May 07 16:05:32 archlinux rtkit-daemon[1300]: Supervising 7 threads of 5 processes of 1 users.
May 07 16:05:32 archlinux rtkit-daemon[1300]: Supervising 7 threads of 5 processes of 1 users.
May 07 16:05:32 archlinux kernel: wlan0: authenticate with 28:de:a8:e2:37:5c
May 07 16:05:32 archlinux kernel: wlan0: send auth to 28:de:a8:e2:37:5c (try 1/3)
May 07 16:05:32 archlinux kernel: wlan0: authenticated
May 07 16:05:32 archlinux kernel: wlan0: associate with 28:de:a8:e2:37:5c (try 1/3)
May 07 16:05:32 archlinux kernel: wlan0: RX AssocResp from 28:de:a8:e2:37:5c (capab=0x1831 status=0 aid=3)
May 07 16:05:32 archlinux systemd-networkd[608]: wlan0: Connected WiFi access point: TurkTelekom_ZTU3F9 (28:de:a8:e2:37:5c)
May 07 16:05:32 archlinux kernel: wlan0: associated
May 07 16:05:32 archlinux kernel: wlan0: Limiting TX power to 27 (27 - 0) dBm as advertised by 28:de:a8:e2:37:5c
May 07 16:05:33 archlinux kernel: iwlwifi 0000:00:14.3: Unhandled alg: 0xc0400707
May 07 16:05:33 archlinux kernel: iwlwifi 0000:00:14.3: Unhandled alg: 0xc0400707
May 07 16:05:33 archlinux kernel: iwlwifi 0000:00:14.3: Unhandled alg: 0xc0400707
May 07 16:05:33 archlinux systemd-networkd[608]: wlan0: Gained carrier
May 07 16:05:33 archlinux systemd-timesyncd[500]: Network configuration changed, trying to establish connection.
May 07 16:05:33 archlinux systemd-networkd[608]: wlan0: DHCPv4 address 192.168.1.36/24, gateway 192.168.1.1 acquired from 192.168.1.1
May 07 16:05:33 archlinux systemd-timesyncd[500]: Network configuration changed, trying to establish connection.
May 07 16:05:33 archlinux systemd-timesyncd[500]: Contacted time server 45.136.155.37:123 (0.arch.pool.ntp.org).
May 07 16:05:33 archlinux systemd-resolved[499]: Using degraded feature set UDP instead of UDP+EDNS0 for DNS server 192.168.1.1.
May 07 16:05:34 archlinux systemd-resolved[499]: Using degraded feature set UDP instead of UDP+EDNS0 for DNS server 192.168.1.1.

journalctl output when I type 

$ systemctl restart iwd
...skipping...
May 07 16:24:36 archlinux iwd[1266767]:                 Bitrates (non-HT):
May 07 16:24:36 archlinux iwd[1266767]:                          6.0 Mbps
May 07 16:24:36 archlinux iwd[1266767]:                          9.0 Mbps
May 07 16:24:36 archlinux iwd[1266767]:                         12.0 Mbps
May 07 16:24:36 archlinux iwd[1266767]:                         18.0 Mbps
May 07 16:24:36 archlinux iwd[1266767]:                         24.0 Mbps
May 07 16:24:36 archlinux iwd[1266767]:                         36.0 Mbps
May 07 16:24:36 archlinux iwd[1266767]:                         48.0 Mbps
May 07 16:24:36 archlinux iwd[1266767]:                         54.0 Mbps
May 07 16:24:36 archlinux iwd[1266767]:                 HT Capabilities:
May 07 16:24:36 archlinux iwd[1266767]:                         HT40
May 07 16:24:36 archlinux iwd[1266767]:                         Short GI for 20Mhz
May 07 16:24:36 archlinux iwd[1266767]:                         Short GI for 40Mhz
May 07 16:24:36 archlinux iwd[1266767]:                 HT RX MCS indexes:
May 07 16:24:36 archlinux iwd[1266767]:                         0-15
May 07 16:24:36 archlinux iwd[1266767]:                 VHT Capabilities:
May 07 16:24:36 archlinux iwd[1266767]:                         160 Mhz operation
May 07 16:24:36 archlinux iwd[1266767]:                         Short GI for 80Mhz
May 07 16:24:36 archlinux iwd[1266767]:                         Short GI for 160 and 80 + 80 Mhz
May 07 16:24:36 archlinux iwd[1266767]:                         Max RX MCS: 0-9 for NSS: 2
May 07 16:24:36 archlinux iwd[1266767]:                         Max TX MCS: 0-9 for NSS: 2
May 07 16:24:36 archlinux iwd[1266767]:         Ciphers: BIP-GMAC-256 BIP-GMAC-128 GCMP-256 GCMP-128
May 07 16:24:36 archlinux iwd[1266767]:                  BIP-CMAC-128 CCMP-128 TKIP
May 07 16:24:36 archlinux iwd[1266767]:         Supported iftypes: ad-hoc station ap p2p-client p2p-go p2p-device
May 07 16:24:36 archlinux systemd-networkd[1244743]: wlan0: Link UP
May 07 16:24:36 archlinux systemd-networkd[1244743]: wlan0: Configuring with /etc/systemd/network/20-wlan.network.
May 07 16:24:37 archlinux kernel: wlan0: authenticate with 28:de:a8:e2:37:5c
May 07 16:24:37 archlinux kernel: wlan0: send auth to 28:de:a8:e2:37:5c (try 1/3)
May 07 16:24:37 archlinux rtkit-daemon[1300]: Supervising 7 threads of 5 processes of 1 users.
May 07 16:24:37 archlinux rtkit-daemon[1300]: Supervising 7 threads of 5 processes of 1 users.
May 07 16:24:37 archlinux kernel: wlan0: authenticated
May 07 16:24:37 archlinux kernel: wlan0: associate with 28:de:a8:e2:37:5c (try 1/3)
May 07 16:24:37 archlinux kernel: wlan0: RX AssocResp from 28:de:a8:e2:37:5c (capab=0x1831 status=0 aid=1)
May 07 16:24:37 archlinux systemd-networkd[1244743]: wlan0: Connected WiFi access point: TurkTelekom_ZTU3F9 (28:de:a8:e2:37:5c)
May 07 16:24:37 archlinux kernel: wlan0: associated
May 07 16:24:37 archlinux kernel: wlan0: Limiting TX power to 27 (27 - 0) dBm as advertised by 28:de:a8:e2:37:5c
May 07 16:24:38 archlinux kernel: iwlwifi 0000:00:14.3: Unhandled alg: 0xc0400707
May 07 16:24:38 archlinux kernel: iwlwifi 0000:00:14.3: Unhandled alg: 0xc0400707
May 07 16:24:38 archlinux kernel: iwlwifi 0000:00:14.3: Unhandled alg: 0xc0400707
May 07 16:24:38 archlinux systemd-networkd[1244743]: wlan0: Gained carrier
May 07 16:24:38 archlinux kernel: IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
May 07 16:24:39 archlinux systemd-networkd[1244743]: wlan0: Gained IPv6LL
May 07 16:24:39 archlinux systemd-timesyncd[500]: Network configuration changed, trying to establish connection.
May 07 16:24:40 archlinux systemd-networkd[1244743]: wlan0: DHCPv4 address 192.168.1.36/24, gateway 192.168.1.1 acquired from 192.168.1.1
May 07 16:24:40 archlinux systemd-timesyncd[500]: Network configuration changed, trying to establish connection.
May 07 16:24:40 archlinux systemd-timesyncd[500]: Contacted time server 85.199.214.98:123 (0.arch.pool.ntp.org).
May 07 16:24:40 archlinux systemd-resolved[1244883]: Using degraded feature set UDP instead of UDP+EDNS0 for DNS server 192.168.1.1.
May 07 16:24:41 archlinux systemd-resolved[1244883]: Using degraded feature set UDP instead of UDP+EDNS0 for DNS server 192.168.1.1.

Journalctl when I type 

$ systemctl restard systemd-resolved
May 07 16:25:58 archlinux dbus-daemon[610]: [system] Activating via systemd: service name='org.freedesktop.home1' unit='dbus-org.freedesktop.home1.service' requested by ':1.247659' (uid=0 pid=1269310 comm=">
May 07 16:25:58 archlinux dbus-daemon[610]: [system] Activation via systemd failed for unit 'dbus-org.freedesktop.home1.service': Unit dbus-org.freedesktop.home1.service not found.
May 07 16:25:58 archlinux sudo[1269310]: pam_systemd_home(sudo:account): systemd-homed is not available: Unit dbus-org.freedesktop.home1.service not found.
May 07 16:25:58 archlinux sudo[1269310]:    koray : TTY=pts/4 ; PWD=/home/koray ; USER=root ; COMMAND=/usr/bin/systemctl restart systemd-resolved
May 07 16:25:58 archlinux sudo[1269310]: pam_unix(sudo:session): session opened for user root(uid=0) by (uid=1000)
May 07 16:25:58 archlinux systemd[1]: Stopping Network Name Resolution...
May 07 16:25:58 archlinux systemd[1]: systemd-resolved.service: Deactivated successfully.
May 07 16:25:58 archlinux systemd[1]: Stopped Network Name Resolution.
May 07 16:25:58 archlinux systemd[1]: run-credentials-systemd\x2dresolved.service.mount: Deactivated successfully.
May 07 16:25:58 archlinux systemd[1]: Starting Network Name Resolution...
May 07 16:25:58 archlinux systemd-resolved[1269320]: Positive Trust Anchors:
May 07 16:25:58 archlinux systemd-resolved[1269320]: . IN DS 20326 8 2 e06d44b80b8f1d39a95c0b0d7c65d08458e880409bbc683457104237c7f8ec8d
May 07 16:25:58 archlinux systemd-resolved[1269320]: Negative trust anchors: home.arpa 10.in-addr.arpa 16.172.in-addr.arpa 17.172.in-addr.arpa 18.172.in-addr.arpa 19.172.in-addr.arpa 20.172.in-addr.arpa 21.>
May 07 16:25:58 archlinux systemd-resolved[1269320]: Using system hostname 'archlinux'.
May 07 16:25:58 archlinux systemd-resolved[1269320]: mDNS-IPv4: There appears to be another mDNS responder running, or previously systemd-resolved crashed with some outstanding transfers.
May 07 16:25:58 archlinux systemd-resolved[1269320]: mDNS-IPv6: There appears to be another mDNS responder running, or previously systemd-resolved crashed with some outstanding transfers.
May 07 16:25:58 archlinux systemd[1]: Started Network Name Resolution.
May 07 16:25:58 archlinux sudo[1269310]: pam_unix(sudo:session): session closed for user root
May 07 16:26:02 archlinux systemd-resolved[1269320]: Using degraded feature set UDP instead of UDP+EDNS0 for DNS server 192.168.1.1.
May 07 16:26:02 archlinux systemd-resolved[1269320]: Using degraded feature set UDP instead of UDP+EDNS0 for DNS server 192.168.1.1.
~

And this is the journalctl when i type 

$ systemctl restard systemd-networkd
May 07 16:27:09 archlinux dbus-daemon[610]: [system] Activation via systemd failed for unit 'dbus-org.freedesktop.home1.service': Unit dbus-org.freedesktop.home1.service not found.
May 07 16:27:09 archlinux sudo[1271500]: pam_systemd_home(sudo:account): systemd-homed is not available: Unit dbus-org.freedesktop.home1.service not found.
May 07 16:27:09 archlinux sudo[1271500]:    koray : TTY=pts/4 ; PWD=/home/koray ; USER=root ; COMMAND=/usr/bin/systemctl restart systemd-networkd
May 07 16:27:09 archlinux sudo[1271500]: pam_unix(sudo:session): session opened for user root(uid=0) by (uid=1000)
May 07 16:27:09 archlinux systemd[1]: Stopping Network Configuration...
May 07 16:27:09 archlinux systemd-networkd[1244743]: wlan0: DHCPv6 lease lost
May 07 16:27:09 archlinux systemd[1]: systemd-networkd.service: Deactivated successfully.
May 07 16:27:09 archlinux systemd[1]: Stopped Network Configuration.
May 07 16:27:09 archlinux systemd[1]: Starting Network Configuration...
May 07 16:27:09 archlinux systemd-networkd[1271503]: lo: Link UP
May 07 16:27:09 archlinux systemd-networkd[1271503]: lo: Gained carrier
May 07 16:27:09 archlinux systemd-networkd[1271503]: enp3s0: Link UP
May 07 16:27:09 archlinux systemd-networkd[1271503]: wlan0: Link UP
May 07 16:27:09 archlinux systemd-networkd[1271503]: wlan0: Gained carrier
May 07 16:27:09 archlinux systemd-networkd[1271503]: wlan0: Gained IPv6LL
May 07 16:27:09 archlinux systemd-networkd[1271503]: wlan0: Connected WiFi access point: TurkTelekom_ZTU3F9 (28:de:a8:e2:37:5c)
May 07 16:27:09 archlinux systemd-networkd[1271503]: Enumeration completed
May 07 16:27:09 archlinux systemd[1]: Started Network Configuration.
May 07 16:27:09 archlinux systemd-networkd[1271503]: enp3s0: Configuring with /etc/systemd/network/20-ethernet.network.
May 07 16:27:09 archlinux systemd-timesyncd[500]: No network connectivity, watching for changes.
May 07 16:27:09 archlinux systemd-networkd[1271503]: wlan0: Configuring with /etc/systemd/network/20-wlan.network.
May 07 16:27:09 archlinux sudo[1271500]: pam_unix(sudo:session): session closed for user root
May 07 16:27:09 archlinux systemd-timesyncd[500]: Network configuration changed, trying to establish connection.
May 07 16:27:11 archlinux rtkit-daemon[1300]: Supervising 7 threads of 5 processes of 1 users.
May 07 16:27:11 archlinux rtkit-daemon[1300]: Supervising 7 threads of 5 processes of 1 users.
May 07 16:27:12 archlinux systemd-networkd[1271503]: wlan0: DHCPv4 address 192.168.1.36/24, gateway 192.168.1.1 acquired from 192.168.1.1
May 07 16:27:12 archlinux systemd-timesyncd[500]: Network configuration changed, trying to establish connection.
May 07 16:27:12 archlinux systemd-resolved[1269320]: Using degraded feature set UDP instead of UDP+EDNS0 for DNS server 192.168.1.1.
May 07 16:27:12 archlinux systemd-resolved[1269320]: Using degraded feature set UDP instead of UDP+EDNS0 for DNS server 192.168.1.1.
May 07 16:27:12 archlinux systemd-timesyncd[500]: Contacted time server 62.12.173.12:123 (0.arch.pool.ntp.org).

output of 

$ iwconfig

:

lo        no wireless extensions.

enp3s0    no wireless extensions.

wlan0     IEEE 802.11  ESSID:"TurkTelekom_ZTU3F9"  
          Mode:Managed  Frequency:5.2 GHz  Access Point: 28:DE:A8:E2:37:5C   
          Bit Rate=650 Mb/s   Tx-Power=22 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:on
          Link Quality=46/70  Signal level=-64 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:51   Missed beacon:0

output of 

$ ip addr show

:

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: enp3s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel state DOWN group default qlen 1000
    link/ether 00:d8:61:83:8b:52 brd ff:ff:ff:ff:ff:ff
7: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 58:a0:23:b9:4a:1f brd ff:ff:ff:ff:ff:ff
    inet 192.168.1.36/24 metric 600 brd 192.168.1.255 scope global dynamic wlan0
       valid_lft 3534sec preferred_lft 3534sec
    inet6 fe80::5aa0:23ff:feb9:4a1f/64 scope link 
       valid_lft forever preferred_lft forever

output of 

$ ip route show

:

default via 192.168.1.1 dev wlan0 proto dhcp src 192.168.1.36 metric 600 
192.168.1.0/24 dev wlan0 proto kernel scope link src 192.168.1.36 metric 600 
192.168.1.1 dev wlan0 proto dhcp scope link src 192.168.1.36 metric 600

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#2 2023-05-07 14:35:11

seth
Member
Registered: 2012-09-03
Posts: 60,793

Re: Wi-fi disconnects and re-connects immediately once in a while.

systemctl restard systemd-networkd

and that's also not what you actually typed.

Please post the output of

find /etc/systemd -type l -exec test -f {} \; -print | awk -F'/' '{ printf ("%-40s | %s\n", $(NF-0), $(NF-1)) }' | sort -f

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#3 2023-05-08 11:05:23

Kaydemir
Member
Registered: 2022-09-06
Posts: 5

Re: Wi-fi disconnects and re-connects immediately once in a while.

$ find /etc/systemd -type l -exec test -f {} \; -print | awk -F'/' '{ printf ("%-40s | %s\n", $(NF-0), $(NF-1)) }' | sort -f
dbus-org.freedesktop.network1.service    | system
dbus-org.freedesktop.resolve1.service    | system
dbus-org.freedesktop.timesync1.service   | system
fstrim.timer                             | timers.target.wants
getty@tty1.service                       | getty.target.wants
isw@SILENT.service                       | multi-user.target.wants
isw@SILENT.service                       | sleep.target.wants
iwd.service                              | multi-user.target.wants
lm_sensors.service                       | multi-user.target.wants
p11-kit-server.socket                    | sockets.target.wants
pipewire.socket                          | sockets.target.wants
postgresql.service                       | multi-user.target.wants
pulseaudio.socket                        | sockets.target.wants
remote-fs.target                         | multi-user.target.wants
systemd-networkd.service                 | multi-user.target.wants
systemd-networkd.socket                  | sockets.target.wants
systemd-networkd-wait-online.service     | network-online.target.wants
systemd-network-generator.service        | sysinit.target.wants
systemd-resolved.service                 | sysinit.target.wants
systemd-timesyncd.service                | sysinit.target.wants
tlp.service                              | multi-user.target.wants

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#4 2023-05-08 12:10:25

seth
Member
Registered: 2012-09-03
Posts: 60,793

Re: Wi-fi disconnects and re-connects immediately once in a while.

There're no conflicting serviced, tlp is a candidate (powersaving for the wifi NIC kicks it out of gear)
Otherwise please post your complete system journal for an affected boot: 

sudo journalctl -b | curl -F 'file=@-' 0x0.st

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#5 2023-05-08 13:22:34

Kaydemir
Member
Registered: 2022-09-06
Posts: 5

Re: Wi-fi disconnects and re-connects immediately once in a while.

My tlp is always in AC mode but I'll keep using the system with tlp disabled for a while just in case and see what happens.

http://0x0.st/HZxK.txt

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#6 2023-05-08 13:33:23

seth
Member
Registered: 2012-09-03
Posts: 60,793

Re: Wi-fi disconnects and re-connects immediately once in a while.

May 06 00:05:30 archlinux iwd[612]: Received Deauthentication event, reason: 4, from_ap: false
May 06 10:55:34 archlinux iwd[612]: Received Deauthentication event, reason: 3, from_ap: false
May 06 17:29:43 archlinux iwd[612]: Received Deauthentication event, reason: 3, from_ap: false
May 06 20:05:30 archlinux iwd[612]: Received Deauthentication event, reason: 4, from_ap: false
May 07 13:24:53 archlinux iwd[612]: Received Deauthentication event, reason: 3, from_ap: false
May 07 16:05:29 archlinux iwd[612]: Received Deauthentication event, reason: 4, from_ap: false
May 07 20:08:00 archlinux iwd[1281648]: Received Deauthentication event, reason: 3, from_ap: false
May 08 00:05:30 archlinux iwd[1281648]: Received Deauthentication event, reason: 4, from_ap: false
May 08 10:24:07 archlinux iwd[1281648]: Received Deauthentication event, reason: 3, from_ap: false
May 08 12:05:29 archlinux iwd[1281648]: Received Deauthentication event, reason: 4, from_ap: false
May 08 16:05:29 archlinux iwd[1281648]: Received Deauthentication event, reason: 4, from_ap: false

Same problem w/ wpa_supplicant?
What if your keep "ping google.com" running in some terminal?

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