Created attachment 691751 [details]
kernel trace

Several times a day my wifi goes down. It needs to be restarted with "service
network restart"

Here's my system:

description: Notebook
product: 20FQ0041MS (LENOVO_MT_20FQ_BU_Think_FM_ThinkPad X1 Carbon 4th)
vendor: LENOVO
version: ThinkPad X1 Carbon 4th

description: Wireless interface
product: Wireless 8260
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:04:00.0
logical name: wlp4s0
version: 3a
serial: a4:34:d9:a9:f9:4d
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwlwifi driverversion=4.7.2-2-default
firmware=21.302800.0 ip=192.168.1.10 latency=0 link=yes multicast=yes
wireless=IEEE 802.11
resources: irq:128 memory:f1000000-f1001fff

# uname -a
Linux linux-jrxm 4.7.2-2-default #1 SMP PREEMPT Mon Aug 29 23:57:41 UTC 2016
(8a962cf) x86_64 x86_64 x86_64 GNU/Linux