![使用 Centrino Wireless-N 1030 [Rainbow Peak] 后 wifi 速度变慢](https://linux22.com/image/843945/%E4%BD%BF%E7%94%A8%20Centrino%20Wireless-N%201030%20%5BRainbow%20Peak%5D%20%E5%90%8E%20wifi%20%E9%80%9F%E5%BA%A6%E5%8F%98%E6%85%A2.png)
从 kubuntu 13.04 升级到 13.10 后，我的 wifi 连接突然变得非常慢。到 www.google.nl 的 Ping 时间从 200 毫秒到 1500 毫秒不等。
当我连接以太网电缆时，它们会降到正常时间，例如 8 或 9 毫秒。有人遇到过同样的问题或知道我可以尝试的解决方案吗？在升级过程中，他们几次询问我是否要保留或替换某种配置文件。我不确定是哪个文件，但也许这与它有关。升级之前，有线和无线连接都运行正常。
***** uname -a *****
Linux K53SV 3.11.0-12-generic #19-Ubuntu SMP Wed Oct 9 16:20:46 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
***** lsb_release *****
Distributor ID: Ubuntu
Description: Ubuntu 13.10
Release: 13.10
Codename: saucy
***** lspci *****
03:00.0 Network controller [0280]: Intel Corporation Centrino Wireless-N 1030 [Rainbow Peak] [8086:008a] (rev 34)
Subsystem: Intel Corporation Centrino Wireless-N 1030 BGN [8086:5305]
Kernel driver in use: iwlwifi
04:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 06)
Subsystem: ASUSTeK Computer Inc. Device [1043:1277]
Kernel driver in use: r8169
***** lsusb *****
Bus 002 Device 008: ID 046d:c31c Logitech, Inc. Keyboard K120 for Business
Bus 002 Device 007: ID 1532:000d Razer USA, Ltd
Bus 002 Device 006: ID 045e:0761 Microsoft Corp.
Bus 002 Device 005: ID 05e3:0608 Genesys Logic, Inc. USB-2.0 4-Port HUB
Bus 002 Device 004: ID 03f0:7611 Hewlett-Packard DeskJet F2492 All-in-One
Bus 002 Device 003: ID 05e3:0608 Genesys Logic, Inc. USB-2.0 4-Port HUB
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 005: ID 0bda:0139 Realtek Semiconductor Corp. RTS5139 Card Reader Controller
Bus 001 Device 004: ID 058f:a014 Alcor Micro Corp. Asus Integrated Webcam
Bus 001 Device 008: ID 8086:0189 Intel Corp.
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
***** iwconfig *****
wlan0 IEEE 802.11bgn ESSID:"Linksys"
Mode:Managed Frequency:2.437 GHz Access Point: <MAC address removed>
Bit Rate=1 Mb/s Tx-Power=15 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:off
Link Quality=70/70 Signal level=-32 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:3 Invalid misc:24617 Missed beacon:0
***** lsmod *****
iwldvm 237440 0
mac80211 596969 1 iwldvm
iwlwifi 165398 1 iwldvm
cfg80211 479757 3 iwlwifi,mac80211,iwldvm
***** nm-tool *****
NetworkManager Tool
State: connected (global)
- Device: eth0 -----------------------------------------------------------------
Type: Wired
Driver: r8169
State: unavailable
Default: no
HW Address: <MAC address removed>
Capabilities:
Carrier Detect: yes
Speed: 100 Mb/s
Wired Properties
Carrier: off
- Device: wlan0 [Linksys] -----------------------------------------------------
Type: 802.11 WiFi
Driver: iwlwifi
State: connected
Default: yes
HW Address: <MAC address removed>
Capabilities:
Speed: 1 Mb/s
Wireless Properties
WEP Encryption: yes
WPA Encryption: yes
WPA2 Encryption: yes
Wireless Access Points (* = current AP)
*Linksys: Infra, <MAC address removed>, Freq 2437 MHz, Rate 54 Mb/s, Strength 88 WPA2
Yo-Chris-Yo: Infra, <MAC address removed>, Freq 2437 MHz, Rate 54 Mb/s, Strength 39 WPA2
Sitecom0210C8: Infra, <MAC address removed>, Freq 2462 MHz, Rate 54 Mb/s, Strength 49 WPA2
Sitecom72DE64: Infra, <MAC address removed>, Freq 2462 MHz, Rate 54 Mb/s, Strength 60 WPA2
Fonera: Infra, <MAC address removed>, Freq 2412 MHz, Rate 54 Mb/s, Strength 49 WPA2
FON_FREE_INTERNET: Infra, <MAC address removed>, Freq 2412 MHz, Rate 54 Mb/s, Strength 50
Uilenstede/ACTA/Rijssen: Infra, <MAC address removed>, Freq 2472 MHz, Rate 54 Mb/s, Strength 44 WPA2
SparKalme: Infra, <MAC address removed>, Freq 2412 MHz, Rate 54 Mb/s, Strength 24 WPA WPA2
EikRijke: Infra, <MAC address removed>, Freq 2457 MHz, Rate 54 Mb/s, Strength 27 WPA WPA2
Chan: Infra, <MAC address removed>, Freq 2412 MHz, Rate 54 Mb/s, Strength 32 WPA WPA2
dedriekoffertjes:Infra, <MAC address removed>, Freq 2452 MHz, Rate 54 Mb/s, Strength 34 WPA2
TP-LINK_EFA49A: Infra, <MAC address removed>, Freq 2412 MHz, Rate 54 Mb/s, Strength 24 WPA2
Sitecom6C4844: Infra, <MAC address removed>, Freq 2462 MHz, Rate 54 Mb/s, Strength 29 WPA2
SKJ: Infra, <MAC address removed>, Freq 2452 MHz, Rate 54 Mb/s, Strength 32 WPA2
Guess who...: Infra, <MAC address removed>, Freq 2452 MHz, Rate 54 Mb/s, Strength 19 WPA WPA2
IPv4 Settings:
Address: 192.168.1.111
Prefix: 24 (255.255.255.0)
Gateway: 192.168.1.1
DNS: 192.168.1.1
***** NetworkManager.state *****
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
WimaxEnabled=true
***** NetworkManager.conf *****
[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq
[ifupdown]
managed=false
***** interfaces *****
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
***** iwlist *****
wlan0 Scan completed :
Cell 01 - Address: <MAC address removed>
Channel:6
Frequency:2.437 GHz (Channel 6)
Quality=70/70 Signal level=-31 dBm
Encryption key:on
ESSID:"Linksys"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
24 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
Mode:Master
Extra:tsf=0000001c97005a91
Extra: Last beacon: 16ms ago
IE: Unknown: 00074C696E6B737973
IE: Unknown: 010882848B962430486C
IE: Unknown: 030106
IE: Unknown: 2A0100
IE: Unknown: 2F0100
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK
IE: Unknown: 32040C121860
IE: Unknown: 2D1AFC181BFFFF000000000000000000000000000000000000000000
IE: Unknown: 3D1606081500000000000000000000000000000000000000
IE: Unknown: DD090010180202F0040000
IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
Cell 02 - Address: <MAC address removed>
Channel:1
Frequency:2.412 GHz (Channel 1)
Quality=21/70 Signal level=-89 dBm
Encryption key:on
ESSID:"SparKalme"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
24 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
Mode:Master
Extra:tsf=000000029f2c6dc5
Extra: Last beacon: 5544ms ago
IE: Unknown: 0009537061724B616C6D65
IE: Unknown: 010882848B962430486C
IE: Unknown: 030101
IE: Unknown: 2A0100
IE: Unknown: 2F0100
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : CCMP TKIP
Authentication Suites (1) : PSK
IE: Unknown: 32040C121860
IE: Unknown: 2D1A7C181BFFFF000000000000000000000000000000000000000000
IE: Unknown: 3D1601001300000000000000000000000000000000000000
IE: Unknown: DD740050F204104A0001101044000102103B0001031047001085F64238A1415DE70DCB4F68E34271B0102100074C696E6B73797310230004453930301024000776312E302E30331042000234321054000800060050F20400011011000445393030100800022688103C0001011049000600372A000120
IE: Unknown: DD090010180201F0280000
IE: WPA Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : CCMP TKIP
Authentication Suites (1) : PSK
Cell 03 - Address: <MAC address removed>
Channel:1
Frequency:2.412 GHz (Channel 1)
Quality=30/70 Signal level=-80 dBm
Encryption key:on
ESSID:"Fonera"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 9 Mb/s
18 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 12 Mb/s; 24 Mb/s; 48 Mb/s
Mode:Master
Extra:tsf=0000000207b024ba
Extra: Last beacon: 16ms ago
IE: Unknown: 0006466F6E657261
IE: Unknown: 010882848B961224486C
IE: Unknown: 030101
IE: Unknown: 2A0104
IE: Unknown: 32040C183060
IE: Unknown: 2D1A6C0117FF000000000000000000000000000000000C0000000000
IE: Unknown: 3D1601000400000000000000000000000000000000000000
IE: Unknown: 3E0100
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK
IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
IE: Unknown: 0B05010031127A
IE: Unknown: 7F0101
IE: Unknown: DD07000C4304000000
IE: Unknown: 07064E4C20010D10
IE: Unknown: DD9D0050F204104A0001101044000102103B000103104700102880288028801880A8800018842CFC8C1021001852616C696E6B20546563686E6F6C6F67792C20436F72702E1023001C52616C696E6B20576972656C6573732041636365737320506F696E74102400065254323836301042000831323334353637381054000800060050F20400011011000952616C696E6B415053100800020084103C000101
Cell 04 - Address: <MAC address removed>
Channel:1
Frequency:2.412 GHz (Channel 1)
Quality=38/70 Signal level=-72 dBm
Encryption key:off
ESSID:"FON_FREE_INTERNET"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 9 Mb/s
18 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 12 Mb/s; 24 Mb/s; 48 Mb/s
Mode:Master
Extra:tsf=0000000207b04858
Extra: Last beacon: 16ms ago
IE: Unknown: 0011464F4E5F465245455F494E5445524E4554
IE: Unknown: 010882848B961224486C
IE: Unknown: 030101
IE: Unknown: 2A0104
IE: Unknown: 32040C183060
IE: Unknown: 2D1A6C0117FF000000000000000000000000000000000C0000000000
IE: Unknown: 3D1601000400000000000000000000000000000000000000
IE: Unknown: 3E0100
IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
IE: Unknown: 0B05010031127A
IE: Unknown: 7F0101
IE: Unknown: DD07000C4304000000
IE: Unknown: 07064E4C20010D10
Cell 05 - Address: <MAC address removed>
Channel:1
Frequency:2.412 GHz (Channel 1)
Quality=21/70 Signal level=-89 dBm
Encryption key:on
ESSID:"Chan"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
24 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
Mode:Master
Extra:tsf=000000015f4ffaeb
Extra: Last beacon: 7144ms ago
IE: Unknown: 00044368616E
IE: Unknown: 010882848B962430486C
IE: Unknown: 030101
IE: Unknown: 050400010000
IE: Unknown: 2A0100
IE: Unknown: 2F0100
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : CCMP TKIP
Authentication Suites (1) : PSK
IE: Unknown: 32040C121860
IE: Unknown: 2D1A7C181BFFFF000000000000000000000000000000000000000000
IE: Unknown: 3D1601001700000000000000000000000000000000000000
IE: Unknown: DD180050F204104A00011010440001021049000600372A000120
IE: Unknown: DD090010180203F0280000
IE: WPA Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : CCMP TKIP
Authentication Suites (1) : PSK
***** modinfo *****
filename: /lib/modules/3.11.0-12-generic/kernel/drivers/net/wireless/iwlwifi/dvm/iwldvm.ko
license: GPL
author: Copyright(c) 2003-2013 Intel Corporation <[email protected]>
version: in-tree:
description: Intel(R) Wireless WiFi Link AGN driver for Linux
srcversion: 189D6366522149BFF40DA25
depends: iwlwifi,mac80211,cfg80211
intree: Y
vermagic: 3.11.0-12-generic SMP mod_unload modversions
filename: /lib/modules/3.11.0-12-generic/kernel/drivers/net/wireless/iwlwifi/iwlwifi.ko
license: GPL
author: Copyright(c) 2003-2013 Intel Corporation <[email protected]>
version: in-tree:
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-3160-7.ucode
firmware: iwlwifi-7260-7.ucode
srcversion: B3EF32124305F5D1F6E94A5
答案1
做：
echo "options iwlwifi 11n_disable=1" | sudo tee /etc/modprobe.d/iwlwifi.conf
sudo modprobe -rfv iwldvm
sudo modprobe -rfv iwlwifi
sudo modprobe -v iwlwifi
进入网络管理器并更改无线设置以匹配屏幕截图。
进入您的路由器并将 802.11bgn 更改为 802.11bg，然后保存设置并重新启动路由器和计算机。
让我们修改这个文件：sudo /etc/modprobe.d/iwlwifi.conf 更改
options iwlwifi 11n_disable=1
到：
options iwlwifi 11n_disable=1 iwlwifi bt_coex_active=0
答案2
当我更新到 14.04 时，我遇到了同样的问题。我尝试了所有方法，也尝试了这篇文章中的答案。过了一会儿，我想我会试试 LM，结果发现问题消失了，奇迹就在 linux-firmware 包中。LM 使用旧版本 1.127，而 Ubuntu 现在使用 1.127.7。将其恢复到此版本的最简单方法是：安装 Synaptic，找到此包，单击以标记它，按 Ctrl+E 并更改其版本。应用更改，问题解决。
答案3
我通过降级内核版本解决了这个问题。