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#1 2019-12-09 19:46:10

Mladia
Member
Registered: 2016-04-30
Posts: 57

Wifi connection unstable

The wifi connection at home on my Thinkpad t450s laptop drops all the time. I am dual booting with Windows 10 and no problems exist there.
I suppose the problem is with the linux drivers of the wireless card. The wiki states, that they are some problems with the wireless card driver, which could be fixed by installing the updated driver, but this solution is only for kernel < 4.7

Any suggestions on what I might do?

5.4.2-arch1-1
lscpi: Intel Corporation Wireless 7265 (rev 59)

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#2 2019-12-09 19:49:27

jasonwryan
Anarchist
From: .nz
Registered: 2009-05-09
Posts: 29,049
Website

Re: Wifi connection unstable

Please paste the output of `systemctl list-unit-files --state=enabled`


Arch + dwm   •   Mercurial repos  •   Surfraw

Registered Linux User #482438

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#3 2019-12-09 19:53:37

Mladia
Member
Registered: 2016-04-30
Posts: 57

Re: Wifi connection unstable

systemctl list-unit-files --state=enabled

UNIT FILE                                  STATE  
org.cups.cupsd.path                        enabled
autovt@.service                            enabled
bluetooth.service                          enabled
dbus-org.bluez.service                     enabled
dbus-org.freedesktop.nm-dispatcher.service enabled
dbus-org.freedesktop.timesync1.service     enabled
dhcpcd.service                             enabled
display-manager.service                    enabled
gdm.service                                enabled
getty@.service                             enabled
NetworkManager-dispatcher.service          enabled
NetworkManager-wait-online.service         enabled
NetworkManager.service                     enabled
org.cups.cupsd.service                     enabled
systemd-timesyncd.service                  enabled
tlp-sleep.service                          enabled
tlp.service                                enabled
org.cups.cupsd.socket                      enabled
remote-fs.target                           enabled

19 unit files listed.

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#4 2019-12-09 19:57:28

Zod
Member
From: Hoosiertucky
Registered: 2019-03-10
Posts: 405

Re: Wifi connection unstable

You should probably disable dhcpcd.service

Let network manager handle it.

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#5 2019-12-09 20:26:22

Mladia
Member
Registered: 2016-04-30
Posts: 57

Re: Wifi connection unstable

I think it is better. I hope it works fine now.

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#6 2019-12-09 20:28:45

Zod
Member
From: Hoosiertucky
Registered: 2019-03-10
Posts: 405

Re: Wifi connection unstable

If it's fixed, don't forget to edit your first post and append [Solved] to the title.

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#7 2020-01-14 06:44:36

Mladia
Member
Registered: 2016-04-30
Posts: 57

Re: Wifi connection unstable

I can confirm, that the problem is not fixed. I also tried to observe it more and define its behavior better. It is dropping in areas, where the wifi is weaker, but in the same areas my android phone connects without a problem and on the same laptop, but with Windows, everything works fine.

The current behavior is, that the wifi will disconnect every 5 seconds or so, then reconnect and then again after 5-10 seconds, drop again.

Last edited by Mladia (2020-01-14 06:46:16)

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#8 2020-01-14 06:55:57

doccze
Member
Registered: 2020-01-14
Posts: 4

Re: Wifi connection unstable

You could try to set a fixed rate on that device with iwconfig.
Disabling Power savings could also help.

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#9 2020-01-14 09:35:11

seth
Member
Registered: 2012-09-03
Posts: 16,509

Re: Wifi connection unstable

Post a complete system journal.
5 second cycles sounds *a lot* as if there're still two services in a race over the NIC…

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#10 2020-01-18 16:06:13

Mladia
Member
Registered: 2016-04-30
Posts: 57

Re: Wifi connection unstable

Here is a piece of the journal when the disconnection is happening until there is a connection to the network again.

https://pastebin.com/ncChD3U9

I noticed this. It doesn't seem normal, right?

Jan 18 16:46:21 tmonk kernel: wlp3s0: disassociated from 02:a0:57:2e:02:c0 (Reason: 1=UNSPECIFIED)

Last edited by Mladia (2020-01-18 16:11:38)

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#11 2020-01-18 17:04:23

seth
Member
Registered: 2012-09-03
Posts: 16,509

Re: Wifi connection unstable

Jan 18 16:46:21 tmonk wpa_supplicant[608]: wlp3s0: CTRL-EVENT-SIGNAL-CHANGE above=0 signal=0 noise=9999 txrate=0

Sounds like a bug.

Try to disable https://wiki.archlinux.org/index.php/Ne … domization and if that doesn't work either, drop NM (stop & disable) and try to connect w/ wifi-menu and see whether that's more stable.

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