使用Ubuntu 14.10在Lenovo T440p上使用不稳定的WiFi
所以基本上我在过去两天试图找出如何稳定我的WiFi连接浪费了。 以太网工作得很好，但当我尝试连接到我的无线网络时，我的笔记本电脑保持连接大约10秒钟，之后它被困在一个可怜的连接断开环路中。 建议将不胜感激。
无线脚本的输出如下：
########## wireless info START ########## Report from: 06 Apr 2015 18:45 IDT +0300 Booted last: 06 Apr 2015 18:42 IDT +0300 Script from: 20 Sep 2014 23:04 UTC +0000 ##### release ########################### Distributor ID: Ubuntu Description: Ubuntu 14.10 Release: 14.10 Codename: utopic ##### kernel ############################ Linux 3.16.0-33-generic #44-Ubuntu SMP Thu Mar 12 12:19:35 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux Parameters: ro, quiet, splash, vt.handoff=7 ##### desktop ########################### Ubuntu ##### lspci ############################# 00:19.0 Ethernet controller [0200]: Intel Corporation Ethernet Connection I217-LM [8086:153a] (rev 04) Subsystem: Lenovo ThinkPad T440p [17aa:220e] Kernel driver in use: e1000e 03:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8192EE PCIe Wireless Network Adapter [10ec:818b] Subsystem: Realtek Semiconductor Co., Ltd. Device [10ec:001b] Kernel driver in use: r8192ee ##### lsusb ############################# Bus 002 Device 002: ID 8087:8000 Intel Corp. Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 002: ID 8087:8008 Intel Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 003 Device 002: ID 138a:0017 Validity Sensors, Inc. Bus 003 Device 004: ID 04f2:b39a Chicony Electronics Co., Ltd Bus 003 Device 003: ID 0bda:8761 Realtek Semiconductor Corp. Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub ##### PCMCIA card info ################## ##### rfkill ############################ 0: hci0: Bluetooth Soft blocked: no Hard blocked: no 1: tpacpi_bluetooth_sw: Bluetooth Soft blocked: no Hard blocked: no 2: phy0: Wireless LAN Soft blocked: no Hard blocked: no ##### lsmod ############################# r8192ee 594758 0 mac80211 660592 1 r8192ee cfg80211 510218 2 mac80211,r8192ee wmi 19193 0 ##### interfaces ######################## auto lo iface lo inet loopback ##### ifconfig ########################## eth0 Link encap:Ethernet HWaddr inet addr:10.0.0.8 Bcast:10.0.0.255 Mask:255.255.255.0 inet6 addr: fe80::6af7:28ff:fe34:61e9/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:14287 errors:0 dropped:0 overruns:0 frame:0 TX packets:9634 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:18343870 (18.3 MB) TX bytes:875727 (875.7 KB) Interrupt:20 Memory:f0600000-f0620000 wlan0 Link encap:Ethernet HWaddr inet6 addr: fe80::aeb5:7dff:fe71:5569/64 Scope:Link UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:34 errors:0 dropped:0 overruns:0 frame:0 TX packets:135 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:4821 (4.8 KB) TX bytes:18054 (18.0 KB) ##### iwconfig ########################## eth0 no wireless extensions. lo no wireless extensions. wlan0 IEEE 802.11bgn ESSID:off/any Mode:Managed Access Point: Not-Associated Tx-Power=20 dBm Retry short limit:7 RTS thr=2347 B Fragment thr:off Power Management:off ##### route ############################# Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 10.0.0.138 0.0.0.0 UG 0 0 0 eth0 10.0.0.0 0.0.0.0 255.255.255.0 U 1 0 0 eth0 ##### resolv.conf ####################### nameserver 127.0.1.1 ##### nm-tool ########################### NetworkManager Tool State: connected (global) - Device: wlan0 ---------------------------------------------------------------- Type: 802.11 WiFi Driver: r8192ee State: disconnected Default: no HW Address: Capabilities: Wireless Properties WEP Encryption: yes WPA Encryption: yes WPA2 Encryption: yes Wireless Access Points Perla: Infra, , Freq 2437 MHz, Rate 54 Mb/s, Strength 80 WPA2 HOTFiber-A9BA: Infra, , Freq 2412 MHz, Rate 54 Mb/s, Strength 60 WPA WPA2 vampirB76564: Infra, , Freq 2467 MHz, Rate 54 Mb/s, Strength 60 WPA2 HOTBOX-6E64: Infra, , Freq 2437 MHz, Rate 54 Mb/s, Strength 54 WPA WPA2 HOTBOX-12F6: Infra, , Freq 2452 MHz, Rate 54 Mb/s, Strength 54 WPA WPA2 vampir: Infra, , Freq 2467 MHz, Rate 54 Mb/s, Strength 54 WPA2 bpointer: Infra, , Freq 2412 MHz, Rate 54 Mb/s, Strength 47 WPA WPA2 - Device: eth0 [Wired connection 1] ------------------------------------------- Type: Wired Driver: e1000e State: connected Default: yes HW Address: Capabilities: Carrier Detect: yes Speed: 100 Mb/s Wired Properties Carrier: on IPv4 Settings: Address: 10.0.0.8 Prefix: 24 (255.255.255.0) Gateway: 10.0.0.138 DNS: 10.0.0.138 ##### NetworkManager.state ############## [main] NetworkingEnabled=true WirelessEnabled=true WWANEnabled=true WimaxEnabled=true ##### NetworkManager.conf ############### [main] plugins=ifupdown,keyfile,ofono dns=dnsmasq [ifupdown] managed=false ##### NetworkManager profiles ########### [[/etc/NetworkManager/system-connections/I love Meretz]] (600 root) [connection] id=I love Meretz | type=802-11-wireless [802-11-wireless] ssid=I love Meretz | mac-address= [ipv4] method=auto [ipv6] method=auto ##### iw reg get ######################## Region: Asia/Jerusalem (based on set time zone) country IN: DFS-UNSET (2402 - 2482 @ 40), (N/A, 20) (5170 - 5250 @ 40), (N/A, 20) (5250 - 5330 @ 40), (N/A, 20), DFS (5735 - 5835 @ 40), (N/A, 20) ##### 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 ##### iwlist scan ####################### eth0 Interface doesn't support scanning. lo Interface doesn't support scanning. wlan0 No scan results ##### module infos ###################### [r8192ee] filename: /lib/modules/3.16.0-33-generic/kernel/drivers/staging/rtl8192ee/r8192ee.ko firmware: rtlwifi/rtl8192eefw.bin description: Realtek 8192E 802.11n PCI wireless license: GPL author: Larry Finger author: Realtek WlanFAE srcversion: 046553152F8274C9D21FCAC depends: mac80211,cfg80211 staging: Y intree: Y vermagic: 3.16.0-33-generic SMP mod_unload modversions signer: Magrathea: Glacier signing key sig_key: 27:43:73:00:F8:EE:18:3C:88:11:43:4F:EB:7F:D9:5F:C6:87:82:EC sig_hashalgo: sha512 parm: swlps:bool parm: swenc:using hardware crypto (default 0 [hardware]) (bool) parm: ips:using no link power save (default 1 is open) (bool) parm: fwlps:using linked fw control power save (default 1 is open) (bool) parm: debug:Set debug level (0-5) (default 0) (int) [mac80211] filename: /lib/modules/3.16.0-33-generic/kernel/net/mac80211/mac80211.ko license: GPL description: IEEE 802.11 subsystem srcversion: 5410C94462FA26A0A3F256C depends: cfg80211 intree: Y vermagic: 3.16.0-33-generic SMP mod_unload modversions signer: Magrathea: Glacier signing key sig_key: 27:43:73:00:F8:EE:18:3C:88:11:43:4F:EB:7F:D9:5F:C6:87:82:EC sig_hashalgo: sha512 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) [cfg80211] filename: /lib/modules/3.16.0-33-generic/kernel/net/wireless/cfg80211.ko description: wireless configuration support license: GPL author: Johannes Berg srcversion: 4A525D9D32B0C6D120CA547 depends: intree: Y vermagic: 3.16.0-33-generic SMP mod_unload modversions signer: Magrathea: Glacier signing key sig_key: 27:43:73:00:F8:EE:18:3C:88:11:43:4F:EB:7F:D9:5F:C6:87:82:EC 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 ################# [r8192ee] debug: 1 fwlps: Y ips: Y swenc: N swlps: N [mac80211] beacon_loss_count: 7 ieee80211_default_rc_algo: minstrel_ht max_nullfunc_tries: 2 max_probe_tries: 5 probe_wait_ms: 500 [cfg80211] cfg80211_disable_40mhz_24ghz: N ieee80211_regdom: 00 ##### /etc/modules ###################### lp ##### 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 [/etc/modprobe.d/modesetting.conf] options cirrus modeset=1 options mgag200 modeset=1 ##### rc.local ########################## exit 0 ##### pm-utils ########################## ##### udev rules ######################## [/etc/udev/rules.d/70-persistent-net.rules] # PCI device 0x8086:0x153a (e1000e) SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0" # PCI device 0x10ec:0x818b (r8192ee) SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="wlan*", NAME="wlan0" ##### dmesg ############################# [ 4.440569] r8192ee: module is from the staging directory, the quality is unknown, you have been warned. [ 4.460486] rtlwifi: wireless switch is on [ 4.460609] r8192ee 0000:03:00.0: irq 48 for MSI/MSI-X [ 5.158154] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 6.007283] psmouse serio2: trackpoint: IBM TrackPoint firmware: 0x0e, buttons: 3/3 [ 6.160600] wlan0: authenticate with [ 6.177261] wlan0: send auth to (try 1/3) [ 6.178881] wlan0: authenticated [ 6.180581] wlan0: associate with (try 1/3) [ 6.184171] wlan0: RX AssocResp from (capab=0x411 status=0 aid=4) [ 6.194747] wlan0: associated [ 6.194755] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 27.211404] wlan0: Connection to AP lost [ 28.277336] wlan0: authenticate with [ 28.310547] wlan0: send auth to (try 1/3) [ 28.413142] wlan0: send auth to (try 2/3) [ 28.517259] wlan0: send auth to (try 3/3) [ 28.621429] wlan0: authentication with timed out ########## wireless info END ############ 由于模块位于暂存目录中，因此它们可能是早期版本。 我会尝试后退
sudo apt-get install build-essential linux-headers-generic wget -N -t 5 -T 10 https://www.kernel.org/pub/linux/kernel/projects/backports/stable/v3.19-rc1/backports-3.19-rc1-1.tar.xz tar -xf backports-3.19-rc1-1.tar.xz cd ~/backports-3.19-rc1-1 make defconfig-rtlwifi make sudo make install
重启