Jtdcftul

My Dell XPS 13 9360 started having random network errors in the last couple of days (firefox, apt updates, everything seems to be affected).

I only use wifi, the problem appears on multiple wifi routers

As far as I can remember, it started after an update couple of days ago.

uname -a

Linux mymachinename 4.15.0-47-generic #50-Ubuntu SMP Wed Mar 13 10:44:52 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

dmesg shows a lot of connection loss

[ 1020.770922] wlp58s0: Connection to AP 14:91:82:7a:2b:ae lost

[ 1025.784678] wlp58s0: authenticate with 14:91:82:7a:2b:ae

[ 1025.832168] wlp58s0: send auth to 14:91:82:7a:2b:ae (try 1/3)

[ 1025.833814] wlp58s0: authenticated

[ 1025.838891] wlp58s0: associate with 14:91:82:7a:2b:ae (try 1/3)

[ 1025.842646] wlp58s0: RX AssocResp from 14:91:82:7a:2b:ae (capab=0x431 status=0 aid=4)

[ 1025.845821] wlp58s0: associated

[ 1035.107017] wlp58s0: Connection to AP 14:91:82:7a:2b:ae lost

[ 1040.121106] wlp58s0: authenticate with 14:91:82:7a:2b:ae

[ 1040.168512] wlp58s0: send auth to 14:91:82:7a:2b:ae (try 1/3)

[ 1040.170212] wlp58s0: authenticated

[ 1040.174965] wlp58s0: associate with 14:91:82:7a:2b:ae (try 1/3)

[ 1040.179890] wlp58s0: RX AssocResp from 14:91:82:7a:2b:ae (capab=0x431 status=0 aid=4)

[ 1040.182447] wlp58s0: associated

[ 1049.442709] wlp58s0: Connection to AP 14:91:82:7a:2b:ae lost

[ 1054.454300] wlp58s0: authenticate with 14:91:82:7a:2b:ae

[ 1054.501903] wlp58s0: send auth to 14:91:82:7a:2b:ae (try 1/3)

[ 1054.503598] wlp58s0: authenticated

[ 1054.506659] wlp58s0: associate with 14:91:82:7a:2b:ae (try 1/3)

[ 1054.512507] wlp58s0: RX AssocResp from 14:91:82:7a:2b:ae (capab=0x431 status=0 aid=4)

[ 1054.514927] wlp58s0: associated

sudo lshw -class network

  *-network                 

       description: Wireless interface

       product: QCA6174 802.11ac Wireless Network Adapter

       vendor: Qualcomm Atheros

       physical id: 0

       bus info: pci@0000:3a:00.0

       logical name: wlp58s0

       version: 32

       serial: 9c:b6:d0:d4:b4:af

       width: 64 bits

       clock: 33MHz

       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless

       configuration: broadcast=yes driver=ath10k_pci driverversion=4.15.0-47-generic firmware=WLAN.RM.4.4.1-00079-QCARMSWPZ-1 ip=192.168.1.141 latency=0 link=yes multicast=yes wireless=IEEE 802.11

       resources: irq:133 memory:dc000000-dc1fffff

...

journalctl /usr/sbin/NetworkManager



ápr 13 22:49:03 xpsbuntu NetworkManager[951]: <warn>  [1555188543.6125] sup-iface[0x55c27a0798b0,wlp58s0]: connection disconnected (reason -4)

ápr 13 22:49:03 xpsbuntu NetworkManager[951]: <info>  [1555188543.6381] device (wlp58s0): supplicant interface state: completed -> disconnected

ápr 13 22:49:03 xpsbuntu NetworkManager[951]: <info>  [1555188543.7182] device (wlp58s0): supplicant interface state: disconnected -> scanning

ápr 13 22:49:08 xpsbuntu NetworkManager[951]: <info>  [1555188548.6132] device (wlp58s0): supplicant interface state: scanning -> authenticating

ápr 13 22:49:08 xpsbuntu NetworkManager[951]: <info>  [1555188548.6207] device (wlp58s0): supplicant interface state: authenticating -> associating

ápr 13 22:49:08 xpsbuntu NetworkManager[951]: <info>  [1555188548.6289] device (wlp58s0): supplicant interface state: associating -> associated

ápr 13 22:49:08 xpsbuntu NetworkManager[951]: <info>  [1555188548.6356] device (wlp58s0): supplicant interface state: associated -> 4-way handshake

ápr 13 22:49:08 xpsbuntu NetworkManager[951]: <info>  [1555188548.6517] device (wlp58s0): supplicant interface state: 4-way handshake -> completed

ápr 13 22:49:17 xpsbuntu NetworkManager[951]: <warn>  [1555188557.9565] sup-iface[0x55c27a0798b0,wlp58s0]: connection disconnected (reason -4)

ápr 13 22:49:17 xpsbuntu NetworkManager[951]: <info>  [1555188557.9820] device (wlp58s0): supplicant interface state: completed -> disconnected

ápr 13 22:49:18 xpsbuntu NetworkManager[951]: <info>  [1555188558.0622] device (wlp58s0): supplicant interface state: disconnected -> scanning

ápr 13 22:49:22 xpsbuntu NetworkManager[951]: <info>  [1555188562.9579] device (wlp58s0): supplicant interface state: scanning -> authenticating

ápr 13 22:49:22 xpsbuntu NetworkManager[951]: <info>  [1555188562.9649] device (wlp58s0): supplicant interface state: authenticating -> associating

ápr 13 22:49:22 xpsbuntu NetworkManager[951]: <info>  [1555188562.9723] device (wlp58s0): supplicant interface state: associating -> associated

ápr 13 22:49:22 xpsbuntu NetworkManager[951]: <info>  [1555188562.9794] device (wlp58s0): supplicant interface state: associated -> 4-way handshake

ápr 13 22:49:22 xpsbuntu NetworkManager[951]: <info>  [1555188562.9962] device (wlp58s0): supplicant interface state: 4-way handshake -> completed

ápr 13 22:49:32 xpsbuntu NetworkManager[951]: <warn>  [1555188572.2915] sup-iface[0x55c27a0798b0,wlp58s0]: connection disconnected (reason -4)