我使用的是 ubuntu 14.04 live usb，想在我的 Toshiba e45t 上与预装的 Windows 8.1（我知道如何操作）进行双启动。问题是每当我尝试连接到我的 WPA wifi（我所有的其他设备都可以连接到）时，每隔 2 秒它就会断开连接，并重新要求输入密码。这真的很烦人，你甚至无法使用该连接。奇怪的是，我的 wifi 在 Windows 8.1 和 Kali Linux 上都可以使用。这是我的输出dmesg：
[ 1133.401930] wlan0: authenticate with 00:26:b8:f5:f4:a0
[ 1133.403428] wlan0: send auth to 00:26:b8:f5:f4:a0 (try 1/3)
[ 1133.471253] wlan0: send auth to 00:26:b8:f5:f4:a0 (try 2/3)
[ 1133.477224] wlan0: authenticated
[ 1133.477544] iwlwifi 0000:03:00.0 wlan0: disabling HT/VHT due to WEP/TKIP use
[ 1133.480164] wlan0: associate with 00:26:b8:f5:f4:a0 (try 1/3)
[ 1133.548543] wlan0: associate with 00:26:b8:f5:f4:a0 (try 2/3)
[ 1133.552080] wlan0: RX AssocResp from 00:26:b8:f5:f4:a0 (capab=0x411 status=0 aid=8)
[ 1133.553468] wlan0: associated
[ 1134.093661] cfg80211: Calling CRDA to update world regulatory domain
[ 1134.100155] cfg80211: World regulatory domain updated:
[ 1134.100159] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
[ 1134.100162] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 1134.100164] cfg80211: (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 1134.100165] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[ 1134.100167] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 1134.100169] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 1136.167628] wlan0: authenticate with 00:26:b8:f5:f4:a0
[ 1136.169255] wlan0: send auth to 00:26:b8:f5:f4:a0 (try 1/3)
[ 1136.225755] wlan0: send auth to 00:26:b8:f5:f4:a0 (try 2/3)
[ 1136.228049] wlan0: authenticated
[ 1136.228228] iwlwifi 0000:03:00.0 wlan0: disabling HT/VHT due to WEP/TKIP use
[ 1136.232039] wlan0: associate with 00:26:b8:f5:f4:a0 (try 1/3)
[ 1136.298984] wlan0: associate with 00:26:b8:f5:f4:a0 (try 2/3)
[ 1136.302350] wlan0: RX AssocResp from 00:26:b8:f5:f4:a0 (capab=0x411 status=0 aid=8)
[ 1136.303516] wlan0: associated
[ 1139.621330] cfg80211: Calling CRDA to update world regulatory domain
[ 1139.629166] cfg80211: World regulatory domain updated:
[ 1139.629176] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
[ 1139.629184] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 1139.629191] cfg80211: (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 1139.629197] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[ 1139.629203] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 1139.629210] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 1144.194955] wlan0: authenticate with 00:26:b8:f5:f4:a0
[ 1144.196720] wlan0: send auth to 00:26:b8:f5:f4:a0 (try 1/3)
[ 1144.248803] wlan0: send auth to 00:26:b8:f5:f4:a0 (try 2/3)
[ 1144.250721] wlan0: authenticated
[ 1144.251080] iwlwifi 0000:03:00.0 wlan0: disabling HT/VHT due to WEP/TKIP use
[ 1144.252097] wlan0: associate with 00:26:b8:f5:f4:a0 (try 1/3)
[ 1144.349416] wlan0: associate with 00:26:b8:f5:f4:a0 (try 2/3)
[ 1144.452161] wlan0: associate with 00:26:b8:f5:f4:a0 (try 3/3)
[ 1144.525915] wlan0: association with 00:26:b8:f5:f4:a0 timed out
[ 1156.034860] wlan0: authenticate with 00:26:b8:f5:f4:a0
[ 1156.036483] wlan0: send auth to 00:26:b8:f5:f4:a0 (try 1/3)
[ 1156.038400] wlan0: authenticated
[ 1156.038748] iwlwifi 0000:03:00.0 wlan0: disabling HT/VHT due to WEP/TKIP use
[ 1156.040259] wlan0: associate with 00:26:b8:f5:f4:a0 (try 1/3)
[ 1156.130877] wlan0: associate with 00:26:b8:f5:f4:a0 (try 2/3)
[ 1156.133587] wlan0: RX AssocResp from 00:26:b8:f5:f4:a0 (capab=0x411 status=0 aid=8)
[ 1156.134819] wlan0: associated
[ 1160.748371] cfg80211: Calling CRDA to update world regulatory domain
[ 1160.755711] cfg80211: World regulatory domain updated:
[ 1160.755718] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
[ 1160.755723] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 1160.755727] cfg80211: (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 1160.755731] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[ 1160.755734] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 1160.755737] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 1161.583118] wlan0: authenticate with 00:26:b8:f5:f4:a0
[ 1161.584798] wlan0: send auth to 00:26:b8:f5:f4:a0 (try 1/3)
[ 1161.647597] wlan0: send auth to 00:26:b8:f5:f4:a0 (try 2/3)
[ 1161.649523] wlan0: authenticated
[ 1161.649889] iwlwifi 0000:03:00.0 wlan0: disabling HT/VHT due to WEP/TKIP use
[ 1161.652143] wlan0: associate with 00:26:b8:f5:f4:a0 (try 1/3)
[ 1161.724207] wlan0: associate with 00:26:b8:f5:f4:a0 (try 2/3)
[ 1161.727741] wlan0: RX AssocResp from 00:26:b8:f5:f4:a0 (capab=0x411 status=0 aid=8)
[ 1161.729057] wlan0: associated
[ 1167.476272] cfg80211: Calling CRDA to update world regulatory domain
[ 1167.479397] cfg80211: World regulatory domain updated:
[ 1167.479400] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
[ 1167.479402] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 1167.479403] cfg80211: (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 1167.479404] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[ 1167.479406] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 1167.479407] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 1168.311798] wlan0: authenticate with 00:26:b8:f5:f4:a0
[ 1168.313687] wlan0: send auth to 00:26:b8:f5:f4:a0 (try 1/3)
[ 1168.377440] wlan0: send auth to 00:26:b8:f5:f4:a0 (try 2/3)
[ 1168.379254] wlan0: authenticated
[ 1168.379420] iwlwifi 0000:03:00.0 wlan0: disabling HT/VHT due to WEP/TKIP use
[ 1168.380059] wlan0: associate with 00:26:b8:f5:f4:a0 (try 1/3)
[ 1168.457185] wlan0: associate with 00:26:b8:f5:f4:a0 (try 2/3)
[ 1168.460474] wlan0: RX AssocResp from 00:26:b8:f5:f4:a0 (capab=0x411 status=0 aid=8)
[ 1168.461367] wlan0: associated
[ 1169.629523] cfg80211: Calling CRDA to update world regulatory domain
[ 1169.634435] cfg80211: World regulatory domain updated:
[ 1169.634440] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
[ 1169.634443] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 1169.634446] cfg80211: (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 1169.634448] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[ 1169.634450] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 1169.634452] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 1174.686159] wlan0: authenticate with 00:26:b8:f5:f4:a0
[ 1174.687813] wlan0: send auth to 00:26:b8:f5:f4:a0 (try 1/3)
[ 1174.732859] wlan0: send auth to 00:26:b8:f5:f4:a0 (try 2/3)
[ 1174.734744] wlan0: authenticated
[ 1174.735024] iwlwifi 0000:03:00.0 wlan0: disabling HT/VHT due to WEP/TKIP use
[ 1174.736118] wlan0: associate with 00:26:b8:f5:f4:a0 (try 1/3)
[ 1174.803250] wlan0: associate with 00:26:b8:f5:f4:a0 (try 2/3)
[ 1174.806558] wlan0: RX AssocResp from 00:26:b8:f5:f4:a0 (capab=0x411 status=0 aid=8)
[ 1174.807874] wlan0: associated
我的输出来自lspci -nn：
00:00.0 Host bridge [0600]: Intel Corporation Haswell-ULT DRAM Controller [8086:0a04] (rev 09)
00:02.0 VGA compatible controller [0300]: Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a16] (rev 09)
00:03.0 Audio device [0403]: Intel Corporation Haswell-ULT HD Audio Controller [8086:0a0c] (rev 09)
00:14.0 USB controller [0c03]: Intel Corporation Lynx Point-LP USB xHCI HC [8086:9c31] (rev 04)
00:16.0 Communication controller [0780]: Intel Corporation Lynx Point-LP HECI #0 [8086:9c3a] (rev 04)
00:1b.0 Audio device [0403]: Intel Corporation Lynx Point-LP HD Audio Controller [8086:9c20] (rev 04)
00:1c.0 PCI bridge [0604]: Intel Corporation Lynx Point-LP PCI Express Root Port 1 [8086:9c10] (rev e4)
00:1c.2 PCI bridge [0604]: Intel Corporation Lynx Point-LP PCI Express Root Port 3 [8086:9c14] (rev e4)
00:1c.3 PCI bridge [0604]: Intel Corporation Lynx Point-LP PCI Express Root Port 4 [8086:9c16] (rev e4)
00:1d.0 USB controller [0c03]: Intel Corporation Lynx Point-LP USB EHCI #1 [8086:9c26] (rev 04)
00:1f.0 ISA bridge [0601]: Intel Corporation Lynx Point-LP LPC Controller [8086:9c43] (rev 04)
00:1f.2 RAID bus controller [0104]: Intel Corporation 82801 Mobile SATA Controller [RAID mode] [8086:282a] (rev 04)
00:1f.3 SMBus [0c05]: Intel Corporation Lynx Point-LP SMBus Controller [8086:9c22] (rev 04)
02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 0c)
03:00.0 Network controller [0280]: Intel Corporation Wireless 7260 [8086:08b1] (rev 6b)
And from `lshw -class network`:
description: Wireless interface
product: Wireless 7260
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:03:00.0
logical name: wlan0
version: 6b
serial: 5c:51:4f:75:71:b4
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwlwifi driverversion=3.13.0-32-generic firmware=22.24.8.0 latency=0 link=no multicast=yes wireless=IEEE 802.11bgn
resources: irq:61 memory:f7c00000-f7c01fff
有没有办法升级驱动程序？内核升级？我试过了iwconfig wlan0 power off，没用。
答案1
从您的帖子来看，问题在于您的 wifi 路由器/接入点使用的加密，iwlwifi 0000:03:00.0 wlan0: disabling HT/VHT due to WEP/TKIP use因此您需要从 wifi 路由器的加密设置中消除 WEP/TKIP（如果可以）。您需要的是 WPA2-PSK 或 WPA2-AES，不要使用 WEP 或 TKIP，因为它们比较老旧，不太安全