Hello, I recently installed Ubuntu 12.04 64-bit with Wubi on my laptop which has Windows 7 64-bit. Even though the wireless was recognized and worked out of the box, it is very unstable. I have tried to find solutions online but my situation differs from the general slow wireless problem. My wireless is not slow but unstable. I am using Chrome and I constantly see Error 102 (net::ERR_CONNECTION_REFUSED) and Error 137 (net::ERR_NAME_RESOLUTION_FAILED) or it takes a longer than usual time to load a page but when a website is opened successfully, the connection is fast and I can download at normal speed. I tried Firefox too but it did not solve the problem. I have tried these solutions: http://www.unixmen.com/resolve-slow-...natty-narwhal/ and setting the MTU to 1500 (from automatic) as well as some others.
I am new to linux so please write out the commands you mention so I can copy paste them. I will try to post as much information as I can, hopefully they will all be helpful for solving this issue. Since the current router settings work normally in Windows I am hoping to not change the router settings such as disabling N and using B/G instead as that would be avoiding the problem and not solving it.
Code:
Network controller: Realtek Semiconductor Co., Ltd. RTL8188CE 802.11b/g/n WiFi Adapter (rev 01)
ifconfig
eth0 Link encap:Ethernet HWaddr 00:90:f5:b7:c4:eb
UP BROADCAST RUNNING 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)
Interrupt:53
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:510 errors:0 dropped:0 overruns:0 frame:0
TX packets:510 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:50389 (50.3 KB) TX bytes:50389 (50.3 KB)
wlan0 Link encap:Ethernet HWaddr 48:5d:60:cf:37:25
inet addr:192.168.1.108 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:32802 errors:0 dropped:0 overruns:0 frame:0
TX packets:22152 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:45127805 (45.1 MB) TX bytes:2381810 (2.3 MB)
iwconfig
lo no wireless extensions.
wlan0 IEEE 802.11bgn ESSID:"Sleipnir"
Mode:Managed Frequency:2.437 GHz Access Point: 58:6D:8F:0E:52:A4
Bit Rate=72.2 Mb/s Tx-Power=20 dBm
Retry long limit:7 RTS thr=2347 B Fragment thr:off
Power Management:off
Link Quality=58/70 Signal level=-52 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:336 Missed beacon:0
eth0 no wireless extensions.
lsmod
Module Size Used by
rtl8192ce 84826 0
rtl8192c_common 75767 1 rtl8192ce
rtlwifi 111202 1 rtl8192ce
dmesg | grep rtl
[ 9.638595] rtl8192ce 0000:04:00.0: PCI INT A -> GSI 18 (level, low) -> IRQ 18
[ 9.638605] rtl8192ce 0000:04:00.0: setting latency timer to 64
[ 9.987448] ieee80211 phy0: Selected rate control algorithm 'rtl_rc'
[ 9.987849] rtlwifi: wireless switch is on
[ 14.857832] rtl8192c_common: Loading firmware file rtlwifi/rtl8192cfw.bin
[ 15.393241] rtl8192c_common: Loading firmware file rtlwifi/rtl8192cfw.bin
sudo lshw -C network
*-network
description: Ethernet interface
product: JMC250 PCI Express Gigabit Ethernet Controller
vendor: JMicron Technology Corp.
physical id: 0
bus info: pci@0000:03:00.0
logical name: eth0
version: 05
serial: 00:90:f5:b7:c4:eb
size: 10Mbit/s
capacity: 1Gbit/s
width: 32 bits
clock: 33MHz
capabilities: pm pciexpress msix msi bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=jme driverversion=1.0.8 duplex=half latency=0 link=no multicast=yes port=MII speed=10Mbit/s
resources: irq:53 memory:f6320000-f6323fff ioport:d100(size=128) ioport:d000(size=256) memory:f6310000-f631ffff memory:f6300000-f630ffff
*-network
description: Wireless interface
product: RTL8188CE 802.11b/g/n WiFi Adapter
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:04:00.0
logical name: wlan0
version: 01
serial: 48:5d:60:cf:37:25
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=rtl8192ce driverversion=3.2.0-24-generic firmware=N/A ip=192.168.1.108 latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn
resources: irq:18 ioport:c000(size=256) memory:f6200000-f6203fff
iwlist scan
wlan0 Scan completed :
Cell 01 - Address: 58:6D:8F:0E:52:A4
Channel:6
Frequency:2.437 GHz (Channel 6)
Quality=57/70 Signal level=-53 dBm
Encryption key:on
ESSID:"Sleipnir"
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=0000004538c0818e
Extra: Last beacon: 4308ms ago
IE: Unknown: 0008536C6569706E6972
IE: Unknown: 010882848B962430486C
IE: Unknown: 030106
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: 2D1AFC181BFFFF000000000000000000000000000000000000000000
IE: Unknown: 3D1606080000000000000000000000000000000000000000
IE: Unknown: DD6E0050F204104A00011010440001021041000100103B0001031047001036918C47F88B8D2739AA36757336690E10210005436973636F102300054531323030102400063132333435361042000234321054000800060050F2040001101100054531323030100800020084103C000101
IE: Unknown: DD090010180201F0040000
IE: WPA Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : CCMP TKIP
Authentication Suites (1) : PSK
IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
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