13

I'm running

uname -r
4.10.6-1-ARCH

on my dell XPS 13 developer edition (2014). I'm currently having strange problems with my wifi (I use Networkamanger with nm-applet for KDE):

1) at the most superficial level I observed that sometimes it works perfectly: when I boot my pc, it has already connected to the wifi, and sometimes it won't connect in any manner (the wifi is always the same);

2) I try to restart NM: and the problem persist . 3) Sometimes, if I reboot my laptop it works again, sometimes not.

4) I tried to use nmcli

nmcli connection up My-WiFi 

then I observe

dmesg
[  250.165837] IPv6: ADDRCONF(NETDEV_CHANGE): wlp2s0: link becomes ready
[  250.255882] wlp2s0: Limiting TX power to 14 dBm as advertised by 00:3a:9a:32:62:d3
[  272.004204] wlp2s0: deauthenticating from 00:3a:9a:32:62:d3 by local choice (Reason: 3=DEAUTH_LEAVING)
[  275.432861] wlp2s0: authenticate with 00:3a:9a:32:62:d3
[  275.435513] wlp2s0: send auth to 00:3a:9a:32:62:d3 (try 1/3)
[  275.440164] wlp2s0: 00:3a:9a:32:62:d3 unexpected authentication state: alg 0 (expected 0) transact 256 (expected 2)
[  275.538092] wlp2s0: send auth to 00:3a:9a:32:62:d3 (try 2/3)
[  275.540879] wlp2s0: authenticated
[  275.544662] wlp2s0: associate with 00:3a:9a:32:62:d3 (try 1/3)
[  275.546811] wlp2s0: RX AssocResp from 00:3a:9a:32:62:d3 (capab=0x431 status=0 aid=4)
[  275.548267] wlp2s0: associated
[  275.653364] wlp2s0: Limiting TX power to 14 dBm as advertised by 00:3a:9a:32:62:d3
[  297.004547] wlp2s0: deauthenticating from 00:3a:9a:32:62:d3 by local choice (Reason: 3=DEAUTH_LEAVING)
[  300.433810] wlp2s0: authenticate with 00:3a:9a:32:62:d3
[  300.437019] wlp2s0: send auth to 00:3a:9a:32:62:d3 (try 1/3)
[  300.438771] wlp2s0: authenticated
[  300.441086] wlp2s0: associate with 00:3a:9a:32:62:d3 (try 1/3)
[  300.443198] wlp2s0: RX AssocResp from 00:3a:9a:32:62:d3 (capab=0x431 status=0 aid=4)
[  300.444175] wlp2s0: associated
[  300.530232] wlp2s0: Limiting TX power to 14 dBm as advertised by 00:3a:9a:32:62:d3
[  322.003946] wlp2s0: deauthenticating from 00:3a:9a:32:62:d3 by local choice (Reason: 3=DEAUTH_LEAVING)
[  325.430498] wlp2s0: authenticate with 00:3a:9a:32:62:d3
[  325.433405] wlp2s0: send auth to 00:3a:9a:32:62:d3 (try 1/3)
[  325.435168] wlp2s0: authenticated
[  325.437533] wlp2s0: associate with 00:3a:9a:32:62:d3 (try 1/3)
[  325.439710] wlp2s0: RX AssocResp from 00:3a:9a:32:62:d3 (capab=0x431 status=0 aid=4)
[  325.440978] wlp2s0: associated
[  325.618536] wlp2s0: Limiting TX power to 14 dBm as advertised by 00:3a:9a:32:62:d3
[  347.007641] wlp2s0: deauthenticating from 00:3a:9a:32:62:d3 by local choice (Reason: 3=DEAUTH_LEAVING)
[  347.023798] IPv6: ADDRCONF(NETDEV_UP): wlp2s0: link is not ready
[  347.025937] IPv6: ADDRCONF(NETDEV_UP): wlp2s0: link is not ready
[  692.002060] IPv6: ADDRCONF(NETDEV_UP): wlp2s0: link is not ready

there is always the same error. I do not know how to fix. Notice the following:

1) My pc is linux friedly (was sold with ubuntu), in particular

lspci -k 
02:00.0 Network controller: Intel Corporation Wireless 7260 (rev 6b)
    Subsystem: Intel Corporation Dual Band Wireless-AC 7260
    Kernel driver in use: iwlwifi
    Kernel modules: iwlwifi

2) All necessary services are active

systemctl --type=service
UNIT                                                LOAD   ACTIVE SUB     DESCRIPTION                                   
dbus.service                                        loaded active running D-Bus System Message Bus                      
gssproxy.service                                    loaded active running GSSAPI Proxy Daemon                           
kmod-static-nodes.service                           loaded active exited  Create list of required static device nodes fo
lm_sensors.service                                  loaded active exited  Initialize hardware monitoring sensors        
NetworkManager.service                              loaded active running Network Manager                               
ntpd.service                                        loaded active running Network Time Service                          
polkit.service                                      loaded active running Authorization Manager                         
rtkit-daemon.service                                loaded active running RealtimeKit Scheduling Policy Service         
sddm.service                                        loaded active running Simple Desktop Display Manager                
systemd-backlight@backlight:intel_backlight.service loaded active exited  Load/Save Screen Backlight Brightness of backl
systemd-backlight@leds:dell::kbd_backlight.service  loaded active exited  Load/Save Screen Backlight Brightness of leds:
systemd-journal-flush.service                       loaded active exited  Flush Journal to Persistent Storage           
systemd-journald.service                            loaded active running Journal Service                               
systemd-logind.service                              loaded active running Login Service                                 
systemd-random-seed.service                         loaded active exited  Load/Save Random Seed                         
systemd-remount-fs.service                          loaded active exited  Remount Root and Kernel File Systems          
systemd-sysctl.service                              loaded active exited  Apply Kernel Variables                        
systemd-tmpfiles-setup-dev.service                  loaded active exited  Create Static Device Nodes in /dev            
systemd-tmpfiles-setup.service                      loaded active exited  Create Volatile Files and Directories         
systemd-udev-trigger.service                        loaded active exited  udev Coldplug all Devices                     
systemd-udevd.service                               loaded active running udev Kernel Device Manager                    
systemd-update-utmp.service                         loaded active exited  Update UTMP about System Boot/Shutdown        
systemd-user-sessions.service                       loaded active exited  Permit User Sessions                          
udisks2.service                                     loaded active running Disk Manager                                  
upower.service                                      loaded active running Daemon for power management                   
user@1000.service                                   loaded active running User Manager for UID 1000                     
wpa_supplicant.service                              loaded active running WPA supplicant 

3) If I use an usb wired eth shield I can connect with NM without problem;

4) I tried also to connect directly with wpa_supplicant, but was impossible, due to authentication errors however I stress that my userid and pwd are correct since sometimes I'm able to connect without any problem

What should I do?

  • 3
    Havent pre-2016 XPS models huge problems with interference between wifi and USB devices due the interfaces being near each other, that have been somewhat mitigated in newer releases? Are you using USB devices when you have got that problem? – Rui F Ribeiro Apr 3 '17 at 13:44
  • I noticed that plugging in usb eth shield can modify the behavior of the wifi error. But it doesn't seem to be deterministic. However rationally thinking it should be possible to spot the problem. – MaPo Apr 3 '17 at 14:32
  • Extarct the iwlwifi-7260-ucode-22.1.7.0.tgz to your /lib/firmware then reload the iwlwifi – GAD3R Apr 3 '17 at 16:28
  • without using pacman? – MaPo Apr 3 '17 at 16:47
  • 1
    Four upvoted answers, one accepted, here: unix.stackexchange.com/questions/386925/… – Rob Aug 20 '18 at 8:32
0

Could it be that someone in your surroundings is teasing you with a deauther device? https://www.youtube.com/watch?v=qcAcQQPRYrk

https://www.youtube.com/watch?v=TPFs4mueUtk&t=16s

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