ubuntu 断网后为什么只有重启才能再连上？？？

foreast · **发表于 :** 2016-10-18 9:47

我的电脑断网后怎么也连不上，只有重启才能重新连上，为什么？怎么设置才能不用重启链接网络？？

vickycq · **发表于 :** 2016-10-18 10:05

foreast 写道:

我的电脑断网后

1. 说明“断”掉的是有线网/无线网；
2. 说明是怎样“断网”的；
3. 执行以下指令将结果全部复制贴上来

代码:

uname -a
cat /etc/issue
lspci -knn | grep -iA2 net
lsusb
sudo lshw -numeric -C net

foreast · **发表于 :** 2016-10-19 21:55

又断了我把你给的命令结果贴上你帮我看一下谢谢了
@ubuntu:~$ uname -a

Linux ubuntu 4.8.0-22-generic #24-Ubuntu SMP Sat Oct 8 09:15:00 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

@ubuntu:~$ cat /etc/issue

Ubuntu 16.10 \n \l

@ubuntu:~$ lspci -knn | grep -iA2 net

03:00.0 Network controller [0280]: Qualcomm Atheros AR9287 Wireless Network Adapter (PCI-Express) [168c:002e] (rev 01)
Subsystem: Foxconn International, Inc. T77H167.00 [105b:e034]
Kernel driver in use: ath9k
--
04:00.0 Ethernet controller [0200]: Broadcom Limited NetLink BCM57785 Gigabit Ethernet PCIe [14e4:16b5] (rev 10)
Subsystem: Acer Incorporated [ALI] NetLink BCM57785 Gigabit Ethernet PCIe [1025:0500]
Kernel driver in use: tg3
Kernel modules: tg3

@ubuntu:~$ lsusb

Bus 002 Device 003: ID 17ef:6016 Lenovo
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 003: ID 04fc:2801 Sunplus Technology Co., Ltd
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub

@ubuntu:~$ sudo lshw -numeric -C net
[sudo] password for :

*-network DISABLED
description: Wireless interface
product: AR9287 Wireless Network Adapter (PCI-Express) [168C:2E]
vendor: Qualcomm Atheros [168C]
physical id: 0
bus info: pci@0000:03:00.0
logical name: wlan0
version: 01
serial: e0:06:e6:29:db:12
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=ath9k driverversion=4.8.0-22-generic firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11
resources: irq:17 memory:f3500000-f350ffff
*-network
description: Ethernet interface
product: NetLink BCM57785 Gigabit Ethernet PCIe [14E4:16B5]
vendor: Broadcom Limited [14E4]
physical id: 0
bus info: pci@0000:04:00.0
logical name: eth0
version: 10
serial: 20:6a:8a:7d:3b:83
size: 100Mbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi msix pciexpress bus_master cap_list rom ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=tg3 driverversion=3.137 duplex=full firmware=sb latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s
resources: irq:19 memory:f3400000-f340ffff memory:f3410000-f341ffff memory:cfa00000-cfa007ff

vickycq · **发表于 :** 2016-10-19 23:10

foreast 写道:

Linux ubuntu 4.8.0-22-generic #24-Ubuntu SMP Sat Oct 8 09:15:00 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
*-network DISABLED
product: AR9287 Wireless Network Adapter (PCI-Express) [168C:2E]
logical name: wlan0

下次遇到断网时，立刻执行以下指令
假设用户名为 foreast

代码:

sudo journalctl --no-pager | tail -n500 | tee -a /home/foreast/diag
sudo rfkill list all | tee -a /home/foreast/diag
sudo ifconfig -a | tee -a /home/foreast/diag
sudo iwconfig | tee -a /home/foreast/diag
lsmod | tee -a /home/foreast/diag
cat /sys/class/dmi/id/{sys_vendor,product_name} | tee -a /home/foreast/diag

然后执行以下指令看能否恢复网络连接

代码:

sudo rfkill unblock all
sudo ifconfig wlan0 up
sudo modprobe -r ath9k; sleep 1; sudo modprobe ath9k
sudo systemctl restart NetworkManager

网络连接恢复后，执行以下指令

代码:

sudo apt install pastebinit
cat /home/foreast/diag | pastebinit

将回应的网址 (http://paste.ubuntu.com/XXXXXXX) 全部复制贴上来

foreast · **发表于 :** 2016-10-24 13:57

你的命令我试过了还是断，断了后有的时候能自动连，有的时候连不上，不用重启电脑，把网线拔掉，再插上，就连上了。

poloshiao · **发表于 :** 2016-10-24 16:18

引用:

*-network DISABLED
product: AR9287 Wireless Network Adapter (PCI-Express) [168C:2E]
logical name: wlan0
physical id: 0
configuration: broadcast=yes driver=ath9k driverversion=4.8.0-22-generic firmware=N/A

引用:

*-network
description: Ethernet interface
product: NetLink BCM57785 Gigabit Ethernet PCIe [14E4:16B5]
vendor: Broadcom Limited [14E4]
physical id: 0
bus info: pci@0000:04:00.0
logical name: eth0
configuration: autonegotiation=on broadcast=yes driver=tg3 driverversion=3.137 duplex=full firmware=sb latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s

1. 你的無線網卡驅動 ath9k 可能不是合適驅動或者沒有合適設定
導致去爭用有線網卡的 physical id: 0
1-1. 一般有線網卡的 physical id 跟有線網卡的 physical id 應該是不一樣的

引用:

我的电脑断网后

引用:

1. 说明“断”掉的是有线网/无线网；

引用:

断了后有的时候能自动连，有的时候连不上，不用重启电脑，把网线拔掉，再插上，就连上了。

2. 建議
2-1. 測試有線網卡時把無線網卡拔出或從 Bios 關閉
2-2. 測試無線網卡時把有線網卡從 Bios 關閉
2-3. 如果是從左上方連線圖示設定連線確認自動連線有沒有打勾（包含有線及無線）

eagle5678 · **发表于 :** 2016-11-21 11:27

poloshiao 写道:

引用:

*-network DISABLED
product: AR9287 Wireless Network Adapter (PCI-Express) [168C:2E]
logical name: wlan0
physical id: 0
configuration: broadcast=yes driver=ath9k driverversion=4.8.0-22-generic firmware=N/A

引用:

*-network
description: Ethernet interface
product: NetLink BCM57785 Gigabit Ethernet PCIe [14E4:16B5]
vendor: Broadcom Limited [14E4]
physical id: 0
bus info: pci@0000:04:00.0
logical name: eth0
configuration: autonegotiation=on broadcast=yes driver=tg3 driverversion=3.137 duplex=full firmware=sb latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s

1. 你的無線網卡驅動 ath9k 可能不是合適驅動或者沒有合適設定
導致去爭用有線網卡的 physical id: 0
1-1. 一般有線網卡的 physical id 跟有線網卡的 physical id 應該是不一樣的

引用:

我的电脑断网后

引用:

1. 说明“断”掉的是有线网/无线网；

引用:

断了后有的时候能自动连，有的时候连不上，不用重启电脑，把网线拔掉，再插上，就连上了。

2. 建議
2-1. 測試有線網卡時把無線網卡拔出或從 Bios 關閉
2-2. 測試無線網卡時把有線網卡從 Bios 關閉
2-3. 如果是從左上方連線圖示設定連線確認自動連線有沒有打勾（包含有線及無線）

似呼也有这现像

eagle5678 · **发表于 :** 2016-11-21 11:31

代码:

sudo lshw -numeric -C net
[sudo] 密码： 
  *-network               
       description: Ethernet interface
       product: NetLink BCM57780 Gigabit Ethernet PCIe [14E4:1692]
       vendor: Broadcom Corporation [14E4]
       physical id: 0
       bus info: pci@0000:01:00.0
       logical name: enp1s0
       version: 01
       serial: 88:ae:1d:82:50:37
       size: 10Mbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=tg3 driverversion=3.137 duplex=half firmware=sb latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       resources: irq:28 memory:b3400000-b340ffff
  *-network
       description: Wireless interface
       product: AR9287 Wireless Network Adapter (PCI-Express) [168C:2E]
       vendor: Qualcomm Atheros [168C]
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: wlp2s0
       version: 01
       serial: 4c:0f:6e:10:4e:2b
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=ath9k driverversion=4.4.0-47-generic firmware=N/A ip=192.168.1.115 latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn
       resources: irq:17 memory:b2400000-b240ffff

eagle5678 · **发表于 :** 2016-11-21 11:34

突然断网（无线）时，电脑很卡。但系统管理器里没看到异常。

eagle5678 · **发表于 :** 2016-11-21 11:35

@poloshiao

eagle5678 · **发表于 :** 2016-11-21 11:45

https://bugzilla.kernel.org/show_bug.cgi?id=42877

这……

但我这个出现只在16.04，之前都没有

poloshiao · **发表于 :** 2016-11-21 11:47

1. 檢查一下
viewtopic.php?p=3178427#p3178427
2-3. 如果是從左上方連線圖示設定連線確認自動連線有沒有打勾（包含有線及無線）

2. 補充
如果你是在 /etc/network/interfaces 設定
断网后無法自動再連網
只能手動下指令或重開機

poloshiao · **发表于 :** 2016-11-21 11:59

viewtopic.php?p=3180428#p3180428
自 #38 2016-03-29 19:29:13 UTC 以後
許多報告提到類似問題但是還沒看到有效的解決方案

eagle5678 · **发表于 :** 2016-12-01 16:03

代码:

 解决方法：
Try blacklisting the  acer-wmi  kernel module.
sudo gedit /etc/modprobe.d/blacklist.conf 
add  blacklist acer_wmi  as a new line at the bottom of this file.
Then reboot.
 
原理：
edit:
The acer-wmi kernel module enables you to control the following:
the wireless LAN card radio
inbuilt Bluetooth adapter
inbuilt 3G card
mail LED of your laptop
brightness of the LCD panel
With regards to wireless, all  acer-wmi  does is enable the radio on the card. It is not responsible for the wireless LED - once the radio is enabled, this is down to the wireless driver for your card.
However for some acer laptop models - there is a conflict between the Acer firmware and the kernel implementation. This is why you need to blacklist.

这样子处理，暂时还好。acer

ubuntu 断网后 为什么 只有重启才能再连上？？？

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ubuntu 断网后为什么只有重启才能再连上？？？