Arch Linux

atloomis

Member

Registered: 2016-02-20

Posts: 5

Intermittent Wifi

For the past few days, my wifi has repeatedly been disconnecting every few minutes, then reconnecting within a few seconds.

The output of dmesg -H

[Dec31 15:57] wlp0s18f2u1: authenticate with 80:2a:a8:1a:f7:6e
[  +0.258399] wlp0s18f2u1: send auth to 80:2a:a8:1a:f7:6e (try 1/3)
[  +0.008343] wlp0s18f2u1: authenticated
[  +0.002578] wlp0s18f2u1: associate with 80:2a:a8:1a:f7:6e (try 1/3)
[  +0.004516] wlp0s18f2u1: RX AssocResp from 80:2a:a8:1a:f7:6e (capab=0x431 status=0 aid=2)
[  +0.006676] wlp0s18f2u1: associated

journalctl -x

Dec 31 15:57:37 ozymandias dhcpcd[583]: wlp0s18f2u1: carrier lost
Dec 31 15:57:37 ozymandias dhcpcd[583]: wlp0s18f2u1: deleting default route via 192.168.1.1
Dec 31 15:57:37 ozymandias dhcpcd[583]: wlp0s18f2u1: deleting route to 192.168.1.0/24
Dec 31 15:57:37 ozymandias avahi-daemon[335]: Withdrawing address record for 192.168.1.19 on wlp0s18f2u1.
Dec 31 15:57:37 ozymandias avahi-daemon[335]: Leaving mDNS multicast group on interface wlp0s18f2u1.IPv4 with address 192.168.1.19.
Dec 31 15:57:38 ozymandias avahi-daemon[335]: Interface wlp0s18f2u1.IPv4 no longer relevant for mDNS.
Dec 31 15:57:39 ozymandias kernel: wlp0s18f2u1: authenticate with 80:2a:a8:1a:f7:6e
Dec 31 15:57:39 ozymandias kernel: wlp0s18f2u1: send auth to 80:2a:a8:1a:f7:6e (try 1/3)
Dec 31 15:57:39 ozymandias kernel: wlp0s18f2u1: authenticated
Dec 31 15:57:39 ozymandias kernel: wlp0s18f2u1: associate with 80:2a:a8:1a:f7:6e (try 1/3)
Dec 31 15:57:39 ozymandias kernel: wlp0s18f2u1: RX AssocResp from 80:2a:a8:1a:f7:6e (capab=0x431 status=0 aid=2)
Dec 31 15:57:39 ozymandias kernel: wlp0s18f2u1: associated
Dec 31 15:57:40 ozymandias dhcpcd[583]: wlp0s18f2u1: carrier acquired
Dec 31 15:57:40 ozymandias dhcpcd[583]: wlp0s18f2u1: IAID 11:63:25:63
Dec 31 15:57:40 ozymandias dhcpcd[583]: wlp0s18f2u1: rebinding lease of 192.168.1.19
Dec 31 15:57:40 ozymandias dhcpcd[583]: wlp0s18f2u1: probing address 192.168.1.19/24
Dec 31 15:57:46 ozymandias dhcpcd[583]: wlp0s18f2u1: leased 192.168.1.19 for 86400 seconds
Dec 31 15:57:46 ozymandias avahi-daemon[335]: Joining mDNS multicast group on interface wlp0s18f2u1.IPv4 with address 192.168.1.19.
Dec 31 15:57:46 ozymandias avahi-daemon[335]: New relevant interface wlp0s18f2u1.IPv4 for mDNS.
Dec 31 15:57:46 ozymandias dhcpcd[583]: wlp0s18f2u1: adding route to 192.168.1.0/24
Dec 31 15:57:46 ozymandias avahi-daemon[335]: Registering new address record for 192.168.1.19 on wlp0s18f2u1.IPv4.
Dec 31 15:57:46 ozymandias dhcpcd[583]: wlp0s18f2u1: adding default route via 192.168.1.1

In both cases, the same output repeats every time the connection is lost.

jasonwryan

Anarchist

From: .nz

Registered: 2009-05-09

Posts: 30,426

Website

Re: Intermittent Wifi

Please paste the output of `systemctl list-unit-files --state=enabled` and full details of your card and driver.

---

Arch + dwm   •   Mercurial repos  •   Surfraw

Registered Linux User #482438

atloomis

Member

Registered: 2016-02-20

Posts: 5

Re: Intermittent Wifi

systemctl list-unit-files --state=enabled

UNIT FILE                          STATE  
org.cups.cupsd.path                enabled
autovt@.service                    enabled
avahi-daemon.service               enabled
dbus-org.freedesktop.Avahi.service enabled
display-manager.service            enabled
getty@.service                     enabled
lightdm.service                    enabled
netctl@home.service                enabled
org.cups.cupsd.service             enabled
avahi-daemon.socket                enabled
org.cups.cupsd.socket              enabled
remote-fs.target                   enabled

lsusb -v

Bus 001 Device 002: ID 0cf3:7015 Qualcomm Atheros Communications TP-Link TL-WN821N v3 / TL-WN822N v2 802.11n [Atheros AR7010+AR9287]
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass          255 Vendor Specific Class
  bDeviceSubClass       255 Vendor Specific Subclass
  bDeviceProtocol       255 Vendor Specific Protocol
  bMaxPacketSize0        64
  idVendor           0x0cf3 Qualcomm Atheros Communications
  idProduct          0x7015 TP-Link TL-WN821N v3 / TL-WN822N v2 802.11n [Atheros AR7010+AR9287]
  bcdDevice            2.02
  iManufacturer          16 ATHEROS
  iProduct               32 USB WLAN
  iSerial                48 12345
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           60
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              500mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           6
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass      0 
      bInterfaceProtocol      0 
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x01  EP 1 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x83  EP 3 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               1
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x04  EP 4 OUT
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               1
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x05  EP 5 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x06  EP 6 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
Device Qualifier (for other device speed):
  bLength                10
  bDescriptorType         6
  bcdUSB               2.00
  bDeviceClass          255 Vendor Specific Class
  bDeviceSubClass       255 Vendor Specific Subclass
  bDeviceProtocol       255 Vendor Specific Protocol
  bMaxPacketSize0        64
  bNumConfigurations      1
can't get debug descriptor: Resource temporarily unavailable
Device Status:     0x0000
  (Bus Powered)

lshw -C Network

  *-network
       description: Wireless interface
       physical id: 1
       bus info: usb@1:1
       logical name: wlp0s18f2u1
       serial: f8:d1:11:63:25:63
       capabilities: ethernet physical wireless
       configuration: broadcast=yes driver=ath9k_htc driverversion=4.14.9-1-ARCH firmware=1.4 ip=192.168.1.19 link=yes multicast=yes wireless=IEEE 802.11

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 78,863

Re: Intermittent Wifi

How frequent are those losses (I mean, are the timeframes between the losses pretty much eqally long?)
Tried "ps_enable=0"?
Do you have TLP, laptop-mode-tools or powertop installed or just enabled usb autosuspend directly?

---

How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

atloomis

Member

Registered: 2016-02-20

Posts: 5

Re: Intermittent Wifi

Anywhere from a few seconds to a few minutes between losses, which goes on for about an hour before it begins working regularly again for a day or so.
Power saving is disabled

$ iw dev wlp0s18f2u1 get power_save
Power save: off

I do not have any of those installed and have never enabled usb autosuspend.

Last edited by atloomis (2017-12-31 23:11:16)