网络不时会断掉怎么回事啊？

[vickycq]

自从装了16.04.1之后，WIFI也是经常自动断了重连， 是不是BUG呀

执行以下命令将结果全部复制贴上来

代码： 全选

uname -a
sudo lshw -numeric -C net

[feng8899]

本本自带的无线网卡坏了，我用的是802.11 WiFi (wlxd85d4c7ab13f 这个usb网卡 TL-WN821N 300M的老TP-LINK USB无线网卡


sos@bbb:~$ uname -a
Linux bbb 4.4.0-45-generic #66-Ubuntu SMP Wed Oct 19 14:12:37 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
sos@bbb:~$ sudo lshw -numeric -C net
[sudo] password for sos:
*-network
description: Ethernet interface
product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10EC:8168]
vendor: Realtek Semiconductor Co., Ltd. [10EC]
physical id: 0
bus info: pci@0000:08:00.0
logical name: enp8s0
version: 02
serial: 00:24:8c:98:4e:f3
size: 10Mbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list rom 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 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
resources: irq:31 ioport:e800(size=256) memory:f8fff000-f8ffffff memory:f8fe0000-f8feffff memory:fdef0000-fdefffff
*-network
description: Wireless interface
physical id: 2
bus info: usb@2:3
logical name: wlxd85d4c7ab13f
serial: d8:5d:4c:7a:b1:3f
capabilities: ethernet physical wireless
configuration: broadcast=yes driver=carl9170 driverversion=4.4.0-45-generic firmware=1.9.6 ip=192.168.16.103 link=yes multicast=yes wireless=IEEE 802.11bgn

[vickycq]

driver=carl9170

carl9170 驱动问题较多，且 AR9170 系列芯片问题较多。
2. 尝试不使用 802.11n 模式；
3. 尝试为 carl9170 模块使用参数 nohwcrypt=1

WIFI也是经常自动断了重连

可能原因为 AR9170 系列的硬件通病。自动重连是 carl9170 驱动及固件为弥补硬件缺陷的权宜之计

参考 https://wireless.wiki.kernel.org/en/use ... s/carl9170

[feng8899]

15.04之前使用都正常的哦，16.04.1 才出问题

sos@bbb:~$ lsusb
Bus 002 Device 005: ID 064e:f111 Suyin Corp.
Bus 002 Device 004: ID 0cf3:1002 Atheros Communications, Inc. TP-Link TL-WN821N v2 / TL-WN822N v1 802.11n [Atheros AR9170]
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 003: ID 2188:0ae1
Bus 006 Device 002: ID 1bcf:05ca Sunplus Innovation Technology Inc.
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 002: ID 08ff:1600 AuthenTec, Inc. AES1600
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub