我的无线连接完全消失，无法与我的 NIC 卡一起被识别，并且直到我重新启动才会恢复，即使我重新启动网络管理器。
脚步：
1) I boot up type in sudo iwconfig wlp3s0 power off (turn off power management)
2)
$ iwconfig
enp4s0f2 no wireless extensions.
lo no wireless extensions.
wlp3s0 IEEE 802.11 ESSID:"2.4ghz"
Mode:Managed Frequency:2.437 GHz Access Point: E0:3F:29:93:3F:20
Bit Rate=144.4 Mb/s Tx-Power=22 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:off
Link Quality=60/70 Signal level=-50 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:55 Missed beacon:0
3) I loose wifi using 5ghz or 2.4ghz after a certain amount of time
4) sudo rmmod iwlmvm iwlwifi && sudo modprobe iwlmvm iwlwifi
5) sudo systemctl restart network-manager.service
我做一个系统配置和我缺少 wlp3s0 IEEE 802.11 ESSID：“2.4ghz”
$ iwconfig
enp4s0f2 no wireless extensions.
lo no wireless extensions.
我必须重新启动才能恢复我的 WiFi，我该如何避免这种情况。
$ uname -a
Linux sys76 4.8.0-41-generic #44~16.04.1-Ubuntu SMP Fri Mar 3 17:11:16 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
$ dmesg | grep iwlwifi
876.891600] iwlwifi 0000:03:00.0: Error sending SCAN_OFFLOAD_REQUEST_CMD: enqueue_hcmd failed: -5
[ 876.891602] iwlwifi 0000:03:00.0: Scan failed! ret -5
[ 877.909370] iwlwifi 0000:03:00.0: Failed to wake NIC for hcmd
[ 877.909397] iwlwifi 0000:03:00.0: Error sending SCAN_OFFLOAD_REQUEST_CMD: enqueue_hcmd failed: -5
[ 877.909409] iwlwifi 0000:03:00.0: Scan failed! ret -5
[ 878.928277] iwlwifi 0000:03:00.0: Failed to wake NIC for hcmd
[ 878.928364] iwlwifi 0000:03:00.0: Error sending SCAN_OFFLOAD_REQUEST_CMD: enqueue_hcmd failed: -5
[ 878.928366] iwlwifi 0000:03:00.0: Scan failed! ret -5
[ 879.947120] iwlwifi 0000:03:00.0: Failed to wake NIC for hcmd
[ 879.947170] iwlwifi 0000:03:00.0: Error sending SCAN_OFFLOAD_REQUEST_CMD: enqueue_hcmd failed: -5
[ 879.947172] iwlwifi 0000:03:00.0: Scan failed! ret -5
$ sudo lshw -C network
[sudo] password for rt:
*-network
description: Wireless interface
product: Wireless 7260
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:03:00.0
logical name: wlp3s0
version: 73
serial: 0c:8b:fd:2e:64:8e
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwlwifi driverversion=4.8.0-41-generic firmware=17.352738.0 ip=192.168.1.8 latency=0 link=yes multicast=yes wireless=IEEE 802.11
resources: irq:31 memory:f7d00000-f7d01fff
*-network
description: Ethernet interface
product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0.2
bus info: pci@0000:04:00.2
logical name: enp4s0f2
version: 0a
serial: 00:90:f5:f9:d4:f8
size: 10Mbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8411-1_0.0.3 06/18/12 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
resources: irq:27 ioport:e000(size=256) memory:f0004000-f0004fff memory:f0000000-f0003fff
$
ethtool -i wlp3s0 | grep driver
driver: iwlwifi
$ lsmod | grep r81 (when the wifi on my laptop is working)
r8169 81920 0
mii 16384 1 r8169
$ lsmod | grep r81 (when the wifi on my laptop goes down and NIC card isn't found)
r8169 81920 0
mii 16384 1 r8169