Arch Linux

Magnus2552

Member

Registered: 2016-04-07

Posts: 63

[Solved] KDE WLAN not working after system update

Hello, yesterday I ran pacman -Syu, I do not quite remember what exactly was updated, but I think there was something updated as well, that had to do with network.
Today (first reboot after update) my WLAN in KDE is not working anymore. When I click in the taskbar on the WLAN icon and press Connect on the desired connection nothing happens. It's like a useless button, not even KWallet comes up to request a password. What the hell is wrong there? Does anyone have the same problem or knows how to help me? Feel free to request any output of some config files.
In advance (excerpt of) output of "ip link":

wlp8s0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state DORMANT mode DEFAULT group default qlen 1000
    link/ether 3e:c7:8a:b1:a8:7d brd ff:ff:ff:ff:ff:ff

Also I noticed that for every time I click the Connect button in the KDE WLAN menu, the following lines are immediately added to journalctl:

Aug 29 13:55:40 Arch_Linux NetworkManager[384]: <info>  [1472471740.9935] device (wlp8s0): Activation: starting connection 'Home WLAN' (6aa5af47-6d3d-4c3e-bcc0-3c01c3d61062)
Aug 29 13:55:40 Arch_Linux NetworkManager[384]: <info>  [1472471740.9936] audit: op="connection-activate" uuid="6aa5af47-6d3d-4c3e-bcc0-3c01c3d61062" name="Home WLAN" pid=739 uid=1000 result="success"
Aug 29 13:55:40 Arch_Linux NetworkManager[384]: <info>  [1472471740.9937] device (wlp8s0): state change: disconnected -> prepare (reason 'none') [30 40 0]
Aug 29 13:55:40 Arch_Linux NetworkManager[384]: <info>  [1472471740.9938] manager: NetworkManager state is now CONNECTING
Aug 29 13:55:40 Arch_Linux NetworkManager[384]: <error> [1472471740.9941] platform-linux: do-change-link[3]: failure changing link: failure 23 (Zu viele offene Dateien im System)
Aug 29 13:55:40 Arch_Linux NetworkManager[384]: <warn>  [1472471740.9941] device (wlp8s0): set-hw-addr: failed to set-cloned MAC address to 10:08:B1:E6:47:95 (permanent) (unspecified)
Aug 29 13:55:40 Arch_Linux NetworkManager[384]: <info>  [1472471740.9943] device (wlp8s0): state change: prepare -> failed (reason 'none') [40 120 0]
Aug 29 13:55:40 Arch_Linux NetworkManager[384]: <info>  [1472471740.9944] manager: NetworkManager state is now DISCONNECTED
Aug 29 13:55:40 Arch_Linux NetworkManager[384]: <info>  [1472471740.9945] policy: disabling autoconnect for connection 'Home WLAN'.
Aug 29 13:55:40 Arch_Linux NetworkManager[384]: <warn>  [1472471740.9946] device (wlp8s0): Activation: failed for connection 'Home WLAN'
Aug 29 13:55:40 Arch_Linux NetworkManager[384]: <info>  [1472471740.9950] device (wlp8s0): state change: failed -> disconnected (reason 'none') [120 30 0]
Aug 29 13:55:40 Arch_Linux NetworkManager[384]: <error> [1472471740.9954] platform-linux: do-change-link[3]: failure changing link: failure 23 (Zu viele offene Dateien im System)
Aug 29 13:55:40 Arch_Linux NetworkManager[384]: <warn>  [1472471740.9954] device (wlp8s0): set-hw-addr: failed to set MAC address to 1E:AD:35:CB:5D:B4 (scanning) (unspecified)
Aug 29 13:55:40 Arch_Linux kdeinit5[682]: "Keine derartige Schnittstelle »org.freedesktop.DBus.Properties« des Objekts im Pfad /org/freedesktop/NetworkManager/ActiveConnection/14"
Aug 29 13:55:40 Arch_Linux kdeconnectd[725]: "Keine derartige Schnittstelle »org.freedesktop.DBus.Properties« des Objekts im Pfad /org/freedesktop/NetworkManager/ActiveConnection/14"
Aug 29 13:55:41 Arch_Linux NetworkManager[384]: <info>  [1472471741.0136] device (wlp8s0): supplicant interface state: inactive -> disconnected
Aug 29 13:55:41 Arch_Linux NetworkManager[384]: <info>  [1472471741.0649] device (wlp8s0): supplicant interface state: disconnected -> inactive
Aug 29 13:55:41 Arch_Linux wpa_supplicant[531]: wlp8s0: Reject scan trigger since one is already pending

Some of those lines are translated to German: I was so kind to retranslate them back:

Zu viele offene Dateien im System -> Too many open files in the system
Keine derartige Schnittstelle (...) des Objekts im Pfad (...) -> No such interface (...) of object in path (...)

I would appreciate any kind of help, thanks in advance!

Last edited by Magnus2552 (2016-08-29 20:13:50)

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 19,793

Re: [Solved] KDE WLAN not working after system update

Hello, yesterday I ran pacman -Syu, I do not quite remember what exactly was updated, but I think there was something updated as well, that had to do with network.

/var/log/pacman.log has that information.

I don't use KDE or Networkmanager so I cannot help all that much.  Ensure that your problem is not this :https://bbs.archlinux.org/viewtopic.php?id=210868

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Jujstme

Member

Registered: 2016-08-28

Posts: 7

Re: [Solved] KDE WLAN not working after system update

Seems the same issue as https://bbs.archlinux.org/viewtopic.php?id=216366

Magnus2552

Member

Registered: 2016-04-07

Posts: 63

Re: [Solved] KDE WLAN not working after system update

Seems the same issue as https://bbs.archlinux.org/viewtopic.php?id=216366

You are right, it is the same issue. I am also running broadcom-wl-dkms as driver.
So also for me the fix with downgrading NetworkManager worked.