我在新笔记本电脑 HP 15 AC179TX 上安装了 Ubuntu 14.04.4 LTS。我没有看到检测到任何 WiFi 网络。我可以看到“启用 WiFi”选项。但打开后也没有发现任何网络。在我的另一台笔记本电脑上，我可以看到附近的所有网络。
还有一个有趣的事情是，移动热点的 WiFi 网络被发现了。只有路由器的 WiFi 信号没有被发现。这很奇怪，但这就是正在发生的事情。
请协助我修复它。
以下是从系统收集的无线信息。
########## wireless info START ##########
Report from: 16 Apr 2016 21:07 IST +0530
Booted last: 16 Apr 2016 17:54 IST +0530
Script from: 27 Sep 2015 00:34 UTC +0000
##### release ###########################
Distributor ID: Ubuntu
Description: Ubuntu 14.04.4 LTS
Release: 14.04
Codename: trusty
##### kernel ############################
Linux 4.2.0-27-generic #32~14.04.1-Ubuntu SMP Fri Jan 22 15:32:26 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
Parameters: ro, quiet, splash, vt.handoff=7
##### desktop ###########################
Ubuntu
##### lspci #############################
02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller [10ec:8136] (rev 07)
Subsystem: Hewlett-Packard Company Device [103c:8136]
Kernel driver in use: r8169
03:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter [10ec:b723]
Subsystem: Hewlett-Packard Company Device [103c:804c]
Kernel driver in use: rtl8723be
##### lsusb #############################
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 007: ID 05c8:0382 Cheng Uei Precision Industry Co., Ltd (Foxlink)
Bus 001 Device 006: ID 0bda:b006 Realtek Semiconductor Corp.
Bus 001 Device 009: ID 14cd:125d Super Top
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
##### PCMCIA card info ##################
##### rfkill ############################
1: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
2: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
##### lsmod #############################
hp_wmi 16384 0
sparse_keymap 16384 1 hp_wmi
rtl8723be 90112 0
btcoexist 53248 1 rtl8723be
rtl8723_common 24576 1 rtl8723be
rtl_pci 28672 1 rtl8723be
rtlwifi 77824 2 rtl_pci,rtl8723be
mac80211 729088 3 rtl_pci,rtlwifi,rtl8723be
iwlwifi 204800 0
wmi 20480 1 hp_wmi
cfg80211 540672 3 iwlwifi,mac80211,rtlwifi
##### interfaces ########################
auto lo
iface lo inet loopback
##### ifconfig ##########################
eth0 Link encap:Ethernet HWaddr <MAC 'eth0' [IF]>
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
wlan0 Link encap:Ethernet HWaddr <MAC 'wlan0' [IF]>
inet addr:192.168.43.74 Bcast:192.168.43.255 Mask:255.255.255.0
inet6 addr: fe80::<IP6 'wlan0' [IF]>/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:70 errors:0 dropped:0 overruns:0 frame:0
TX packets:159 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:33391 (33.3 KB) TX bytes:25713 (25.7 KB)
##### iwconfig ##########################
eth0 no wireless extensions.
lo no wireless extensions.
wlan0 IEEE 802.11bgn ESSID:"AndroidAP"
Mode:Managed Frequency:2.437 GHz Access Point: <MAC 'AndroidAP' [AC1]>
Bit Rate=72.2 Mb/s Tx-Power=20 dBm
Retry short limit:7 RTS thr=2347 B Fragment thr:off
Power Management:off
Link Quality=28/70 Signal level=-82 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:29 Missed beacon:0
##### route #############################
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.43.1 0.0.0.0 UG 0 0 0 wlan0
192.168.43.0 0.0.0.0 255.255.255.0 U 9 0 0 wlan0
##### resolv.conf #######################
nameserver 127.0.1.1
##### network managers ##################
Installed:
NetworkManager
Running:
root 824 1 0 17:54 ? 00:00:01 NetworkManager
##### NetworkManager info ###############
NetworkManager Tool
State: connected (global)
- Device: wlan0 [AndroidAP] ---------------------------------------------------
Type: 802.11 WiFi
Driver: rtl8723be
State: connected
Default: yes
HW Address: <MAC 'wlan0' [IF]>
Capabilities:
Speed: 72 Mb/s
Wireless Properties
WEP Encryption: yes
WPA Encryption: yes
WPA2 Encryption: yes
Wireless Access Points (* = current AP)
*AndroidAP: Infra, <MAC 'AndroidAP' [AC1]>, Freq 2462 MHz, Rate 54 Mb/s, Strength 46 WPA2
IPv4 Settings:
Address: 192.168.43.74
Prefix: 24 (255.255.255.0)
Gateway: 192.168.43.1
DNS: 192.168.43.1
- Device: eth0 -----------------------------------------------------------------
Type: Wired
Driver: r8169
State: unavailable
Default: no
HW Address: <MAC 'eth0' [IF]>
Capabilities:
Carrier Detect: yes
Wired Properties
Carrier: off
##### NetworkManager.state ##############
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
WimaxEnabled=true
##### NetworkManager.conf ###############
[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq
no-auto-default=<MAC 'eth0' [IF]>,
[ifupdown]
managed=false
##### NetworkManager profiles ###########
[[/etc/NetworkManager/system-connections/ptEHXgAAAAAAAwHgSundeep 1]] (600 root)
[connection] id=ptEHXgAAAAAAAwHgSundeep 1 | type=802-11-wireless
[802-11-wireless] ssid=ptEHXgAAAAAAAwHgSundeep | mac-address=<MAC 'wlan0' [IF]>
[ipv6] method=auto
[ipv4] method=auto
[[/etc/NetworkManager/system-connections/AndroidAP]] (600 root)
[connection] id=AndroidAP | type=802-11-wireless
[802-11-wireless] ssid=AndroidAP | mac-address=<MAC 'wlan0' [IF]>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/ptEHXgAAAAAAAwHgSundeep]] (600 root)
[connection] id=ptEHXgAAAAAAAwHgSundeep | type=802-11-wireless
[802-11-wireless] ssid=ptEHXgAAAAAAAwHgSundeep | mac-address=<MAC 'wlan0' [IF]>
[ipv4] method=auto
[ipv6] method=auto
##### iw reg get ########################
Region: Asia/Kolkata (based on set time zone)
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
##### iwlist channels ###################
eth0 no frequency information.
lo no frequency information.
wlan0 13 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
Channel 12 : 2.467 GHz
Channel 13 : 2.472 GHz
Current Frequency:2.437 GHz (Channel 6)
##### iwlist scan #######################
eth0 Interface doesn't support scanning.
lo Interface doesn't support scanning.
Channel occupancy:
1 APs on Frequency:2.437 GHz (Channel 6)
wlan0 Scan completed :
Cell 01 - Address: <MAC 'AndroidAP' [AC1]>
Channel:6
Frequency:2.437 GHz (Channel 6)
Quality=26/70 Signal level=-84 dBm
Encryption key:on
ESSID:"AndroidAP"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s
36 Mb/s; 48 Mb/s; 54 Mb/s
Mode:Master
Extra:tsf=000000000229512a
Extra: Last beacon: 60ms ago
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK
##### module infos ######################
[rtl8723be]
filename: /lib/modules/4.2.0-27-generic/kernel/drivers/net/wireless/rtlwifi/rtl8723be/rtl8723be.ko
firmware: rtlwifi/rtl8723befw.bin
description: Realtek 8723BE 802.11n PCI wireless
license: GPL
author: Realtek WlanFAE <[email protected]>
author: PageHe <[email protected]>
srcversion: F4844EEE911CB18A8B2934B
depends: rtlwifi,rtl8723-common,rtl_pci,btcoexist,mac80211
intree: Y
vermagic: 4.2.0-27-generic SMP mod_unload modversions
signer: Build time autogenerated kernel key
sig_key: 73:6E:2F:9E:A1:B4:72:8A:15:AC:16:9B:18:69:26:7E:11:28:D6:E8
sig_hashalgo: sha512
parm: swenc:Set to 1 for software crypto (default 0)
(bool)
parm: ips:Set to 0 to not use link power save (default 1)
(bool)
parm: swlps:Set to 1 to use SW control power save (default 0)
(bool)
parm: fwlps:Set to 1 to use FW control power save (default 1)
(bool)
parm: msi:Set to 1 to use MSI interrupts mode (default 0)
(bool)
parm: debug:Set debug level (0-5) (default 0) (int)
parm: disable_watchdog:Set to 1 to disable the watchdog (default 0)
(bool)
[rtl8723_common]
filename: /lib/modules/4.2.0-27-generic/kernel/drivers/net/wireless/rtlwifi/rtl8723com/rtl8723-common.ko
description: Realtek RTL8723AE/RTL8723BE 802.11n PCI wireless common routines
license: GPL
author: Larry Finger <[email protected]>
author: Realtek WlanFAE <[email protected]>
srcversion: 251C540A2D3AD38CCA85ED9
depends:
intree: Y
vermagic: 4.2.0-27-generic SMP mod_unload modversions
signer: Build time autogenerated kernel key
sig_key: 73:6E:2F:9E:A1:B4:72:8A:15:AC:16:9B:18:69:26:7E:11:28:D6:E8
sig_hashalgo: sha512
[rtl_pci]
filename: /lib/modules/4.2.0-27-generic/kernel/drivers/net/wireless/rtlwifi/rtl_pci.ko
description: PCI basic driver for rtlwifi
license: GPL
author: Larry Finger <[email protected]>
author: Realtek WlanFAE <[email protected]>
author: lizhaoming <[email protected]>
srcversion: A888EFDC516033207A503FA
depends: mac80211,rtlwifi
intree: Y
vermagic: 4.2.0-27-generic SMP mod_unload modversions
signer: Build time autogenerated kernel key
sig_key: 73:6E:2F:9E:A1:B4:72:8A:15:AC:16:9B:18:69:26:7E:11:28:D6:E8
sig_hashalgo: sha512
[rtlwifi]
filename: /lib/modules/4.2.0-27-generic/kernel/drivers/net/wireless/rtlwifi/rtlwifi.ko
description: Realtek 802.11n PCI wireless core
license: GPL
author: Larry Finger <[email protected]>
author: Realtek WlanFAE <[email protected]>
author: lizhaoming <[email protected]>
srcversion: F4CACC5FCAEBE7C22930A24
depends: mac80211,cfg80211
intree: Y
vermagic: 4.2.0-27-generic SMP mod_unload modversions
signer: Build time autogenerated kernel key
sig_key: 73:6E:2F:9E:A1:B4:72:8A:15:AC:16:9B:18:69:26:7E:11:28:D6:E8
sig_hashalgo: sha512
[mac80211]
filename: /lib/modules/4.2.0-27-generic/kernel/net/mac80211/mac80211.ko
license: GPL
description: IEEE 802.11 subsystem
srcversion: FBF6EA073A00B4F3836226E
depends: cfg80211
intree: Y
vermagic: 4.2.0-27-generic SMP mod_unload modversions
signer: Build time autogenerated kernel key
sig_key: 73:6E:2F:9E:A1:B4:72:8A:15:AC:16:9B:18:69:26:7E:11:28:D6:E8
sig_hashalgo: sha512
parm: minstrel_vht_only:Use only VHT rates when VHT is supported by sta. (bool)
parm: max_nullfunc_tries:Maximum nullfunc tx tries before disconnecting (reason 4). (int)
parm: max_probe_tries:Maximum probe tries before disconnecting (reason 4). (int)
parm: beacon_loss_count:Number of beacon intervals before we decide beacon was lost. (int)
parm: probe_wait_ms:Maximum time(ms) to wait for probe response before disconnecting (reason 4). (int)
parm: ieee80211_default_rc_algo:Default rate control algorithm for mac80211 to use (charp)
[iwlwifi]
filename: /lib/modules/4.2.0-27-generic/kernel/drivers/net/wireless/iwlwifi/iwlwifi.ko
license: GPL
author: Copyright(c) 2003- 2015 Intel Corporation <[email protected]>
description: Intel(R) Wireless WiFi driver for Linux
firmware: iwlwifi-100-5.ucode
firmware: iwlwifi-1000-5.ucode
firmware: iwlwifi-135-6.ucode
firmware: iwlwifi-105-6.ucode
firmware: iwlwifi-2030-6.ucode
firmware: iwlwifi-2000-6.ucode
firmware: iwlwifi-5150-2.ucode
firmware: iwlwifi-5000-5.ucode
firmware: iwlwifi-6000g2b-6.ucode
firmware: iwlwifi-6000g2a-5.ucode
firmware: iwlwifi-6050-5.ucode
firmware: iwlwifi-6000-4.ucode
firmware: iwlwifi-7265D-12.ucode
firmware: iwlwifi-7265-12.ucode
firmware: iwlwifi-3160-12.ucode
firmware: iwlwifi-7260-12.ucode
firmware: iwlwifi-8000-12.ucode
srcversion: 75997E53B9CC3BD2CA79F3B
depends: cfg80211
intree: Y
vermagic: 4.2.0-27-generic SMP mod_unload modversions
signer: Build time autogenerated kernel key
sig_key: 73:6E:2F:9E:A1:B4:72:8A:15:AC:16:9B:18:69:26:7E:11:28:D6:E8
sig_hashalgo: sha512
parm: swcrypto:using crypto in software (default 0 [hardware]) (int)
parm: 11n_disable:disable 11n functionality, bitmap: 1: full, 2: disable agg TX, 4: disable agg RX, 8 enable agg TX (uint)
parm: amsdu_size_8K:enable 8K amsdu size (default 0) (int)
parm: fw_restart:restart firmware in case of error (default true) (bool)
parm: antenna_coupling:specify antenna coupling in dB (default: 0 dB) (int)
parm: nvm_file:NVM file name (charp)
parm: d0i3_disable:disable d0i3 functionality (default: Y) (bool)
parm: lar_disable:disable LAR functionality (default: N) (bool)
parm: uapsd_disable:disable U-APSD functionality (default: Y) (bool)
parm: bt_coex_active:enable wifi/bt co-exist (default: enable) (bool)
parm: led_mode:0=system default, 1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0) (int)
parm: power_save:enable WiFi power management (default: disable) (bool)
parm: power_level:default power save level (range from 1 - 5, default: 1) (int)
parm: fw_monitor:firmware monitor - to debug FW (default: false - needs lots of memory) (bool)
[cfg80211]
filename: /lib/modules/4.2.0-27-generic/kernel/net/wireless/cfg80211.ko
description: wireless configuration support
license: GPL
author: Johannes Berg
srcversion: 7982686FBE8064A87E02753
depends:
intree: Y
vermagic: 4.2.0-27-generic SMP mod_unload modversions
signer: Build time autogenerated kernel key
sig_key: 73:6E:2F:9E:A1:B4:72:8A:15:AC:16:9B:18:69:26:7E:11:28:D6:E8
sig_hashalgo: sha512
parm: ieee80211_regdom:IEEE 802.11 regulatory domain code (charp)
parm: cfg80211_disable_40mhz_24ghz:Disable 40MHz support in the 2.4GHz band (bool)
##### module parameters #################
[rtl8723be]
debug: 0
disable_watchdog: N
fwlps: Y
ips: Y
msi: N
swenc: N
swlps: N
[mac80211]
beacon_loss_count: 7
ieee80211_default_rc_algo: minstrel_ht
max_nullfunc_tries: 2
max_probe_tries: 5
minstrel_vht_only: Y
probe_wait_ms: 500
[iwlwifi]
11n_disable: 0
amsdu_size_8K: 0
antenna_coupling: 0
bt_coex_active: Y
d0i3_disable: Y
fw_monitor: N
fw_restart: Y
lar_disable: N
led_mode: 0
nvm_file: (null)
power_level: 0
power_save: N
swcrypto: 0
uapsd_disable: Y
[cfg80211]
cfg80211_disable_40mhz_24ghz: N
ieee80211_regdom: 00
##### /etc/modules ######################
lp
rtc
iwlwifi
##### 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-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/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
##### rc.local ##########################
exit 0
##### pm-utils ##########################
##### udev rules ########################
[/etc/udev/rules.d/70-persistent-net.rules]
# PCI device 0x10ec:0x8136 (r8169)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC 'eth0' [IF]>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
# PCI device 0x10ec:0xb723 (rtl8723be)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC 'wlan0' [IF]>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="wlan*", NAME="wlan0"
##### dmesg #############################
[ 217.871815] Bluetooth: hci0: rtl: examining hci_ver=06 hci_rev=000b lmp_ver=06 lmp_subver=8723
[ 217.871818] Bluetooth: hci0: rtl: loading rtl_bt/rtl8723b_fw.bin
[ 217.871845] bluetooth hci0: Direct firmware load for rtl_bt/rtl8723b_fw.bin failed with error -2
[ 217.871848] Bluetooth: hci0: Failed to load rtl_bt/rtl8723b_fw.bin
[ 220.185321] r8169 0000:02:00.0 eth0: link down
[ 220.185377] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 220.405619] r8169 0000:02:00.0 eth0: link down
[ 220.405678] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 233.295995] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 2562.692831] wlan0: authenticate with <MAC 'AndroidAP' [AC1]>
[ 2562.713957] wlan0: send auth to <MAC 'AndroidAP' [AC1]> (try 1/3)
[ 2562.719497] wlan0: authenticated
[ 2562.723769] wlan0: associate with <MAC 'AndroidAP' [AC1]> (try 1/3)
[ 2562.743411] wlan0: RX AssocResp from <MAC 'AndroidAP' [AC1]> (capab=0x8431 status=0 aid=1)
[ 2562.744318] wlan0: associated
[ 2562.744331] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
########## wireless info END ############