wifi 无法连接并反复要求输入 wifi 密码，f12/wifi 键上的 LED 指示灯保持橙色，我不知道这台已删除 Windows 7 的计算机上的 wifi 以前是否工作过。
Following info:
Now connected by wired connection to post this:
*-network
description: Wireless interface
product: RT3290 Wireless 802.11n 1T/1R PCIe
vendor: Ralink corp.
physical id: 0
bus info: pci@0000:09:00.0
logical name: eno1
version: 00
serial: 14:2d:27:55:71:3f
width: 32 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=RALINK WLAN latency=0 multicast=yes wireless=Ralink STA
resources: irq:16 memory:b2510000-b251ffff
lspci says
08:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller (rev 07)
09:00.0 Network controller: Ralink corp. RT3290 Wireless 802.11n 1T/1R PCIe
09:00.1 Bluetooth: Ralink corp. RT3290 Bluetooth
无线信息脚本的输出是：
########## wireless info START ##########
Report from: 14 Oct 2016 12:44 IST +0530
Booted last: 14 Oct 2016 00:00 IST +0530
Script from: 08 Jul 2016 02:16 UTC +0000
##### release ###########################
Distributor ID: Ubuntu
Description: Ubuntu 16.04.1 LTS
Release: 16.04
Codename: xenial
##### kernel ############################
Linux 4.4.0-43-lowlatency #63-Ubuntu SMP PREEMPT Wed Oct 12 14:41:17 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
Parameters: ro, quiet, splash, vt.handoff=7
##### desktop ###########################
Ubuntu
##### lspci #############################
08:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller [10ec:8136] (rev 07)
Subsystem: Hewlett-Packard Company RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller [103c:2211]
Kernel driver in use: r8169
09:00.0 Network controller [0280]: Ralink corp. RT3290 Wireless 802.11n 1T/1R PCIe [1814:3290]
DeviceName:
Subsystem: Hewlett-Packard Company Ralink RT3290LE 802.11bgn 1x1 Wi-Fi and Bluetooth 4.0 Combo Adapter [103c:18ec]
##### lsusb #############################
Bus 001 Device 003: ID 0bda:5776 Realtek Semiconductor Corp.
Bus 001 Device 002: ID 8087:8000 Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
##### PCMCIA card info ##################
##### rfkill ############################
0: hp-wifi: Wireless LAN
Soft blocked: no
Hard blocked: no
1: hp-bluetooth: Bluetooth
Soft blocked: yes
Hard blocked: no
##### lsmod #############################
cfg80211 573440 0
hp_wmi 16384 0
rt3290sta 1155072 1
sparse_keymap 16384 2 hp_wmi,intel_hid
wmi 20480 1 hp_wmi
##### interfaces ########################
auto lo
iface lo inet loopback
##### ifconfig ##########################
eno1 Link encap:Ethernet HWaddr <MAC 'eno1' [IF1]>
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:4662 errors:0 dropped:0 overruns:0 frame:0
TX packets:269 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1486677 (1.4 MB) TX bytes:0 (0.0 B)
Interrupt:16
enp8s0 Link encap:Ethernet HWaddr <MAC 'enp8s0' [IF2]>
inet addr:192.168.0.3 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::eac:abef:1ce3:c21f/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1008 errors:0 dropped:0 overruns:0 frame:0
TX packets:1189 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:403483 (403.4 KB) TX bytes:136529 (136.5 KB)
##### iwconfig ##########################
lo no wireless extensions.
enp8s0 no wireless extensions.
eno1 Ralink STA ESSID:"" Nickname:"RT3290STA"
Mode:Auto Frequency=2.432 GHz Access Point: <MAC 'Methodlabs' [AC2]>
Bit Rate=1 Mb/s
RTS thr:off Fragment thr:off
Link Quality=10/100 Signal level:-57 dBm Noise level:-57 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
##### route #############################
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.0.1 0.0.0.0 UG 100 0 0 enp8s0
169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 enp8s0
192.168.0.0 0.0.0.0 255.255.255.0 U 100 0 0 enp8s0
##### resolv.conf #######################
nameserver 127.0.1.1
search domain.name
##### network managers ##################
Installed:
NetworkManager
Running:
root 1284 1 0 12:36 ? 00:00:00 /usr/sbin/NetworkManager --no-daemon
##### NetworkManager info ###############
GENERAL.DEVICE: enp8s0
GENERAL.TYPE: ethernet
GENERAL.NM-TYPE: NMDeviceEthernet
GENERAL.VENDOR: Realtek Semiconductor Co., Ltd.
GENERAL.PRODUCT: RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller
GENERAL.DRIVER: r8169
GENERAL.DRIVER-VERSION: 2.3LK-NAPI
GENERAL.FIRMWARE-VERSION: rtl8106e-1_0.0.1 06/29/12
GENERAL.HWADDR: <MAC 'enp8s0' [IF2]>
GENERAL.MTU: 1500
GENERAL.STATE: 100 (connected)
GENERAL.REASON: 0 (No reason given)
GENERAL.UDI: /sys/devices/pci0000:00/0000:00:1c.2/0000:08:00.0/net/enp8s0
GENERAL.IP-IFACE: enp8s0
GENERAL.IS-SOFTWARE: no
GENERAL.NM-MANAGED: yes
GENERAL.AUTOCONNECT: yes
GENERAL.FIRMWARE-MISSING: no
GENERAL.NM-PLUGIN-MISSING: no
GENERAL.PHYS-PORT-ID: --
GENERAL.CONNECTION: Wired connection 1
GENERAL.CON-UUID: e6e17da3-ba4c-3762-ae7a-a1171b47ae0c
GENERAL.CON-PATH: /org/freedesktop/NetworkManager/ActiveConnection/1
GENERAL.METERED: no (guessed)
CAPABILITIES.CARRIER-DETECT: yes
CAPABILITIES.SPEED: 100 Mb/s
CAPABILITIES.IS-SOFTWARE: no
WIRED-PROPERTIES.CARRIER: on
CONNECTIONS.AVAILABLE-CONNECTION-PATHS: /org/freedesktop/NetworkManager/Settings/{2}
CONNECTIONS.AVAILABLE-CONNECTIONS[1]: e6e17da3-ba4c-3762-ae7a-a1171b47ae0c | Wired connection 1
IP4.ADDRESS[1]: 192.168.0.3/24
IP4.GATEWAY: 192.168.0.1
IP4.ROUTE[1]: dst = 169.254.0.0/16, nh = 0.0.0.0, mt = 1000
IP4.DNS[1]: 203.153.44.44
IP4.DNS[2]: 8.8.8.8
IP4.DOMAIN[1]: domain.name
DHCP4.OPTION[1]: requested_routers = 1
DHCP4.OPTION[2]: requested_domain_search = 1
DHCP4.OPTION[3]: requested_time_offset = 1
DHCP4.OPTION[4]: requested_domain_name = 1
DHCP4.OPTION[5]: requested_rfc3442_classless_static_routes = 1
DHCP4.OPTION[6]: requested_broadcast_address = 1
DHCP4.OPTION[7]: requested_netbios_scope = 1
DHCP4.OPTION[8]: requested_wpad = 1
DHCP4.OPTION[9]: next_server = 0.0.0.0
DHCP4.OPTION[10]: expiry = 1476436061
DHCP4.OPTION[11]: requested_interface_mtu = 1
DHCP4.OPTION[12]: requested_subnet_mask = 1
DHCP4.OPTION[13]: routers = 192.168.0.1
DHCP4.OPTION[14]: dhcp_message_type = 5
DHCP4.OPTION[15]: ip_address = 192.168.0.3
DHCP4.OPTION[16]: requested_static_routes = 1
DHCP4.OPTION[17]: domain_name = domain.name
DHCP4.OPTION[18]: requested_domain_name_servers = 1
DHCP4.OPTION[19]: broadcast_address = 192.168.0.255
DHCP4.OPTION[20]: requested_ntp_servers = 1
DHCP4.OPTION[21]: requested_netbios_name_servers = 1
DHCP4.OPTION[22]: dhcp_lease_time = 7200
DHCP4.OPTION[23]: domain_name_servers = 203.153.44.44 8.8.8.8
DHCP4.OPTION[24]: requested_ms_classless_static_routes = 1
DHCP4.OPTION[25]: subnet_mask = 255.255.255.0
DHCP4.OPTION[26]: network_number = 192.168.0.0
DHCP4.OPTION[27]: requested_host_name = 1
DHCP4.OPTION[28]: dhcp_server_identifier = 192.168.0.1
IP6.ADDRESS[1]: fe80::eac:abef:1ce3:c21f/64
IP6.GATEWAY: fe80::1e5f:2bff:feda:5712
IP6.ROUTE[1]: dst = fe80::1e5f:2bff:feda:5712/128, nh = ::, mt = 100
GENERAL.DEVICE: eno1
GENERAL.TYPE: wifi
GENERAL.NM-TYPE: NMDeviceWifi
GENERAL.VENDOR: Ralink corp.
GENERAL.PRODUCT: RT3290 Wireless 802.11n 1T/1R PCIe (Ralink RT3290LE 802.11bgn 1x1 Wi-Fi and Bluetooth 4.0 Combo Adapter)
GENERAL.DRIVER: rt2860
GENERAL.DRIVER-VERSION:
GENERAL.FIRMWARE-VERSION:
GENERAL.HWADDR: <MAC 'eno1' [IF1]>
GENERAL.MTU: 0
GENERAL.STATE: 30 (disconnected)
GENERAL.REASON: 0 (No reason given)
GENERAL.UDI: /sys/devices/pci0000:00/0000:00:1c.5/0000:09:00.0/net/eno1
GENERAL.IP-IFACE:
GENERAL.IS-SOFTWARE: no
GENERAL.NM-MANAGED: yes
GENERAL.AUTOCONNECT: yes
GENERAL.FIRMWARE-MISSING: no
GENERAL.NM-PLUGIN-MISSING: no
GENERAL.PHYS-PORT-ID: --
GENERAL.CONNECTION: --
GENERAL.CON-UUID: --
GENERAL.CON-PATH: --
GENERAL.METERED: unknown
CAPABILITIES.CARRIER-DETECT: no
CAPABILITIES.SPEED: unknown
CAPABILITIES.IS-SOFTWARE: no
WIFI-PROPERTIES.WEP: yes
WIFI-PROPERTIES.WPA: yes
WIFI-PROPERTIES.WPA2: yes
WIFI-PROPERTIES.TKIP: yes
WIFI-PROPERTIES.CCMP: yes
WIFI-PROPERTIES.AP: no
WIFI-PROPERTIES.ADHOC: yes
WIFI-PROPERTIES.2GHZ: yes
WIFI-PROPERTIES.5GHZ: no
CONNECTIONS.AVAILABLE-CONNECTION-PATHS: /org/freedesktop/NetworkManager/Settings/{1,0}
CONNECTIONS.AVAILABLE-CONNECTIONS[1]: 71ce7f1f-87e3-43fc-b8fa-7a383eb24a9f | Methodlabs
CONNECTIONS.AVAILABLE-CONNECTIONS[2]: 0bdee8f7-cd13-4ed6-940c-95c4dec57f66 | Methodlabs 1
SSID BSSID MODE CHAN FREQ RATE SIGNAL BARS SECURITY ACTIVE *
Methodlabs <MAC 'Methodlabs' [AC2]> Infra 5 2432 MHz 54 Mbit/s 92 ▂▄▆█ WPA1 WPA2 no
D-Link_DIR-816 <MAC 'D-Link_DIR-816' [AC1]> Infra 1 2412 MHz 44 Mbit/s 30 ▂___ WPA1 WPA2 no
##### NetworkManager.state ##############
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
##### NetworkManager.conf ###############
[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq
[ifupdown]
managed=false
##### NetworkManager profiles ###########
[[/etc/NetworkManager/system-connections/Methodlabs]] (600 root)
[connection] id=Methodlabs | type=wifi | permissions=user:piyush:;
[wifi] mac-address=<MAC 'eno1' [IF1]> | mac-address-blacklist= | ssid=Methodlabs
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/Methodlabs 1]] (600 root)
[connection] id=Methodlabs 1 | type=wifi | permissions=user:piyush:;
[wifi] mac-address=<MAC 'eno1' [IF1]> | mac-address-blacklist= | ssid=Methodlabs
[ipv4] method=auto
[ipv6] method=auto
##### iw reg get ########################
Region: Asia/Kolkata (based on set time zone)
country 00: DFS-UNSET
(2402 - 2472 @ 40), (N/A, 20), (N/A)
(2457 - 2482 @ 40), (N/A, 20), (N/A), NO-IR
(2474 - 2494 @ 20), (N/A, 20), (N/A), NO-OFDM, NO-IR
(5170 - 5250 @ 80), (N/A, 20), (N/A), NO-IR
(5250 - 5330 @ 80), (N/A, 20), (0 ms), DFS, NO-IR
(5490 - 5730 @ 160), (N/A, 20), (0 ms), DFS, NO-IR
(5735 - 5835 @ 80), (N/A, 20), (N/A), NO-IR
(57240 - 63720 @ 2160), (N/A, 0), (N/A)
##### iwlist channels ###################
lo no frequency information.
enp8s0 no frequency information.
eno1 11 channels in total; available frequencies :
Channel 01 : 2.412 GHz
Channel 02 : 2.417 GHz
Channel 03 : 2.422 GHz
Channel 04 : 2.427 GHz
Channel 05 : 2.432 GHz
Channel 06 : 2.437 GHz
Channel 07 : 2.442 GHz
Channel 08 : 2.447 GHz
Channel 09 : 2.452 GHz
Channel 10 : 2.457 GHz
Channel 11 : 2.462 GHz
Current Frequency:2.432 GHz (Channel 5)
##### iwlist scan #######################
lo Interface doesn't support scanning.
enp8s0 Interface doesn't support scanning.
Channel occupancy:
1 APs on Frequency:2.412 GHz (Channel 1)
1 APs on Frequency:2.432 GHz (Channel 5)
eno1 Scan completed :
Cell 01 - Address: <MAC 'D-Link_DIR-816' [AC1]>
Protocol:802.11b/g/n
ESSID:"D-Link_DIR-816"
Mode:Managed
Frequency:2.412 GHz (Channel 1)
Quality=10/100 Signal level=-86 dBm Noise level=-81 dBm
Encryption key:on
Bit Rates:300 Mb/s
IE: WPA Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : TKIP CCMP
Authentication Suites (1) : PSK
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : TKIP CCMP
Authentication Suites (1) : PSK
Cell 02 - Address: <MAC 'Methodlabs' [AC2]>
Protocol:802.11b/g/n
ESSID:"Methodlabs"
Mode:Managed
Frequency:2.432 GHz (Channel 5)
Quality=100/100 Signal level=-39 dBm Noise level=-92 dBm
Encryption key:on
Bit Rates:54 Mb/s
IE: WPA Version 1
Group Cipher : TKIP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : TKIP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK
##### module infos ######################
[cfg80211]
filename: /lib/modules/4.4.0-43-lowlatency/kernel/net/wireless/cfg80211.ko
description: wireless configuration support
license: GPL
author: Johannes Berg
srcversion: 25A45701AAA64DAC1E47D9D
depends:
intree: Y
vermagic: 4.4.0-43-lowlatency SMP preempt mod_unload modversions
parm: ieee80211_regdom:IEEE 802.11 regulatory domain code (charp)
parm: cfg80211_disable_40mhz_24ghz:Disable 40MHz support in the 2.4GHz band (bool)
[rt3290sta]
filename: /lib/modules/4.4.0-43-lowlatency/kernel/drivers/net/wireless/rt3290sta.ko
version: 2.6.0.0_rev1
srcversion: 96CD86FDB670E3BFC172F9B
depends:
vermagic: 4.4.0-43-lowlatency SMP preempt mod_unload modversions
parm: mac:rt28xx: wireless mac addr (charp)
##### module parameters #################
[cfg80211]
cfg80211_disable_40mhz_24ghz: N
ieee80211_regdom: 00
##### /etc/modules ######################
##### modprobe options ##################
[/etc/modprobe.d/blacklist-ath_pci.conf]
blacklist ath_pci
[/etc/modprobe.d/blacklist.conf]
blacklist evbug
blacklist usbmouse
blacklist usbkbd
blacklist eepro100
blacklist de4x5
blacklist eth1394
blacklist snd_intel8x0m
blacklist snd_aw2
blacklist i2c_i801
blacklist prism54
blacklist bcm43xx
blacklist garmin_gps
blacklist asus_acpi
blacklist snd_pcsp
blacklist pcspkr
blacklist amd76x_edac
[/etc/modprobe.d/blacklist-ralink.conf]
blacklist rt2800pci
blacklist rt2x00pci
[/etc/modprobe.d/blacklist-rare-network.conf]
alias net-pf-3 off
alias net-pf-6 off
alias net-pf-9 off
alias net-pf-11 off
alias net-pf-12 off
alias net-pf-19 off
alias net-pf-21 off
alias net-pf-36 off
[/etc/modprobe.d/intel-microcode-blacklist.conf]
blacklist microcode
[/etc/modprobe.d/iwlwifi.conf]
remove iwlwifi \
(/sbin/lsmod | grep -o -e ^iwlmvm -e ^iwldvm -e ^iwlwifi | xargs /sbin/rmmod) \
&& /sbin/modprobe -r mac80211
[/etc/modprobe.d/mlx4.conf]
softdep mlx4_core post: mlx4_en
[/etc/modprobe.d/osspd.conf]
blacklist snd-pcm-oss
blacklist snd-mixer-oss
blacklist snd-seq-oss
##### rc.local ##########################
exit 0
##### pm-utils ##########################
##### udev rules ########################
##### dmesg #############################
[ 125.427950] r8169 0000:08:00.0 enp8s0: link up
[ 125.427961] IPv6: ADDRCONF(NETDEV_CHANGE): enp8s0: link becomes ready
答案1
首先，检查路由器中的设置。最好使用 WPA2-AES；不要使用任何 WPA 和 WPA2 混合模式，并且肯定不是TKIP。其次，如果您的路由器支持 N 速度，那么在 2.4 GHz 频段使用 20 MHz 的信道宽度（而不是自动 20/40 MHz）可能会获得更好的连接性，尽管这可能会影响 N 速度。使用固定信道（1、6 或 11）比自动信道选择更能带来好运。此外，请确保路由器未设置为仅使用 N 速度；自动 B、G 和 N 是首选。进行这些更改后，重新启动路由器。
接下来，我建议明确设置你的监管范围。检查你的：
sudo iw reg get
如果您选择 00，则这是一个通用的设置。请在此处查找您的设置：http://en.wikipedia.org/wiki/ISO_3166-1_alpha-2然后暂时设置一下：
sudo iw reg set IS
当然，如果不是冰岛，请替换您的国家代码。永久设置它：
gksudo gedit /etc/default/crda
如果您没有文本编辑器 gedit，请使用 nano 或 Kate 或 leafpad。
将最后一行改为：
REGDOMAIN=IS
仔细校对，保存并关闭文本编辑器。
接下来，我在网络管理器中将 IPv6 设置为忽略：http://docs.fedoraproject.org/en-US/Fedora/18/html/Installation_Guide/images/netconfig/network-connections-ipv6-ignore.png 此示例适用于以太网，但您想要无线。
