我的wifi英特尔双频Wireless-AC 7260不断下降，wifi连接断开，并且与我连接的网络从网络管理器中的可用网络列表中消失了。修复此问题的唯一方法是禁用wifi并重新启用它。如何解决此问题。我正在使用ubuntu 14.04 64位。它主要断开5ghz网络上的连接。我的其他设备不会通过wifi断开连接。
查看日志和版本
[email protected]:~$ uname -a
Linux simon 3.13.0-34-generic #60-Ubuntu SMP Wed Aug 13 15:45:27 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
[email protected]:~$
[email protected]:~$ dmesg | grep iwl
[ 3.370777] iwlwifi 0000:03:00.0: irq 46 for MSI/MSI-X
[ 3.381089] iwlwifi 0000:03:00.0: loaded firmware version 22.24.8.0 op_mode iwlmvm
[ 3.414637] iwlwifi 0000:03:00.0: Detected Intel(R) Dual Band Wireless AC 7260, REV=0x144
[ 3.414695] iwlwifi 0000:03:00.0: L1 Disabled; Enabling L0S
[ 3.414913] iwlwifi 0000:03:00.0: L1 Disabled; Enabling L0S
[ 3.630208] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs'
[ 9.304838] iwlwifi 0000:03:00.0: L1 Disabled; Enabling L0S
[ 9.305068] iwlwifi 0000:03:00.0: L1 Disabled; Enabling L0S
[ 605.483174] iwlwifi 0000:03:00.0: L1 Disabled; Enabling L0S
[ 605.483396] iwlwifi 0000:03:00.0: L1 Disabled; Enabling L0S
[email protected]:~$ cat /var/log/syslog | grep -e iwl -e 80211 | tail -n25
Aug 14 08:13:02 simon kernel: [ 3.452780] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Aug 14 08:13:02 simon kernel: [ 3.630208] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs'
Aug 14 08:13:06 simon NetworkManager[1125]: <info> rfkill1: found WiFi radio killswitch (at /sys/devices/pci0000:00/0000:00:1c.2/0000:03:00.0/ieee80211/phy0/rfkill1) (driver iwlwifi)
Aug 14 08:13:06 simon NetworkManager[1125]: <info> (wlan0): using nl80211 for WiFi device control
Aug 14 08:13:06 simon NetworkManager[1125]: <info> (wlan0): new 802.11 WiFi device (driver: 'iwlwifi' ifindex: 3)
Aug 14 08:13:06 simon kernel: [ 9.304838] iwlwifi 0000:03:00.0: L1 Disabled; Enabling L0S
Aug 14 08:13:06 simon kernel: [ 9.305068] iwlwifi 0000:03:00.0: L1 Disabled; Enabling L0S
Aug 14 08:14:18 simon kernel: [ 81.230162] cfg80211: Calling CRDA to update world regulatory domain
Aug 14 08:14:18 simon kernel: [ 81.232330] cfg80211: World regulatory domain updated:
Aug 14 08:14:18 simon kernel: [ 81.232332] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
Aug 14 08:14:18 simon kernel: [ 81.232333] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Aug 14 08:14:18 simon kernel: [ 81.232334] cfg80211: (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Aug 14 08:14:18 simon kernel: [ 81.232335] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
Aug 14 08:14:18 simon kernel: [ 81.232336] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Aug 14 08:14:18 simon kernel: [ 81.232337] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Aug 14 08:23:02 simon kernel: [ 605.483174] iwlwifi 0000:03:00.0: L1 Disabled; Enabling L0S
Aug 14 08:23:02 simon kernel: [ 605.483396] iwlwifi 0000:03:00.0: L1 Disabled; Enabling L0S
Aug 14 08:23:18 simon kernel: [ 621.223905] cfg80211: Calling CRDA to update world regulatory domain
Aug 14 08:23:18 simon kernel: [ 621.228945] cfg80211: World regulatory domain updated:
Aug 14 08:23:18 simon kernel: [ 621.228950] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
Aug 14 08:23:18 simon kernel: [ 621.228954] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Aug 14 08:23:18 simon kernel: [ 621.228956] cfg80211: (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Aug 14 08:23:18 simon kernel: [ 621.228959] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
Aug 14 08:23:18 simon kernel: [ 621.228961] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Aug 14 08:23:18 simon kernel: [ 621.228963] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
这就是支持人员告诉我要对其进行修复的方法，它在某种程度上一直起作用，直到出现新内核为止。看起来每次在Linux中安装新内核时5ghz频段都会变得不稳定，并在几秒钟或几分钟后掉线
支持案例：笔记本电脑上的wifi一直在断开5ghz网络的连接。产品型号：gazp9
当我看到世界法规域已更新时，我被认为是您缺少最新的固件更新，该更新应该可以解决卡中的某些问题。实际上，更新分为两部分。一个是内核，另一个是操作系统中的固件，应该随您的常规更新一起提供。
如果不确定，可以打开终端并执行以下命令
sudo apt-get update
sudo apt-get upgrade
sudo apt-get dist-upgrade
完成后，完全重启系统。
我还必须将我的世界监管域更改为美国，如下所示：
[email protected]:/tmp$ iw reg get
country 00:
(2402 - 2472 @ 40), (3, 20)
(2457 - 2482 @ 40), (3, 20), PASSIVE-SCAN, NO-IBSS
(2474 - 2494 @ 20), (3, 20), NO-OFDM, PASSIVE-SCAN, NO-IBSS
(5170 - 5250 @ 40), (3, 20), PASSIVE-SCAN, NO-IBSS
(5735 - 5835 @ 40), (3, 20), PASSIVE-SCAN, NO-IBSS
[email protected]:/tmp$ sudo iw reg set US
[sudo] password for rt:
[email protected]:/tmp$ iw reg get
country US:
(2402 - 2472 @ 40), (3, 27)
(5170 - 5250 @ 40), (3, 17)
(5250 - 5330 @ 40), (3, 20), DFS
(5490 - 5600 @ 40), (3, 20), DFS
(5650 - 5710 @ 40), (3, 20), DFS
(5735 - 5835 @ 40), (3, 30)
(57240 - 63720 @ 2160), (N/A, 40)
[email protected]:/tmp$
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我来说两句