Wifi fixed now but speed is TOO slow.

[rishi_singh]

Ubuntu forums page takes 15-30 seconds to load. Nothing downloading in background. Speed in win 7 is faster. I use ubuntu 11.04.

Can you help me to diagnose the problem. I use a realtek wifi card.

[rishi_singh]

Anyone ? Please let me know what the problem could be and how to find the cause.

[papibe]

I would recommend taking a look at this thread. Setting the right MTU may increase your browsing experience.

Regards.

[rishi_singh]

I would recommend taking a look at this thread. Setting the right MTU may increase your browsing experience.

Regards.

Sorry to reply so late. That does not work. I keep on getting a "bad packets...." error when i type the first command on that thread. I used lot of values in place of that 14XX, and always got the same error.

[rishi_singh]

I managed to make wifi work, but it is getting disconnected again and again. Please tell me the possible cause and how to make it work. My wifi is ok in win 7 though.
Also, the speed is too slow as i mentioned in another thread http://ubuntuforums.org/showthread.p...2#post11339842


I use ubuntu 11.04 with win 7 dual boot and realtek wifi card.

[cariboo]

Please don't create multiple threads on the same subject, I have merged your two threads.

[rishi_singh]

Please don't create multiple threads on the same subject, I have merged your two threads.

Ok, please help me to make my connection stable.

[varunendra]

Rishi,

Please enter the following commands in a terminal one-by-one and post back their outputs here:

(do a couple of minutes' browsing first)

ifconfig -a
iwconfig
sudo lshw -C network
lsmod

Please wrap each set of outputs in different [code]..and..[/code] tags (by clicking on the # symbol at the top of edit box, and pasting the output in between the generated tags) for better readability.

[rishi_singh]

Rishi,

Please enter the following commands in a terminal one-by-one and post back their outputs here:

(do a couple of minutes' browsing first)

ifconfig -a
iwconfig
sudo lshw -C network
lsmod

Please wrap each set of outputs in different [code]..and..[/code] tags (by clicking on the # symbol at the top of edit box, and pasting the output in between the generated tags) for better readability.

Browsed for 30 minutes. Connection dropped once so far.
ONE IMPORTANT CONCERN I HAVE - I hope that this is not private information and that my privacy will be maintained. If any of the data below could harm my privacy, please let me know.

ifconfig -a :

eth0 Link encap:Ethernet HWaddr f0:de:f1:8c:df:e9
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)
Interrupt:41 Base address:0x6000

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:1620 errors:0 dropped:0 overruns:0 frame:0
TX packets:1620 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:130770 (130.7 KB) TX bytes:130770 (130.7 KB)

wlan0 Link encap:Ethernet HWaddr 38:59:f9:e0:82:c2
inet addr:172.16.6.252 Bcast:172.16.15.255 Mask:255.255.240.0
inet6 addr: fe80::3a59:f9ff:fee0:82c2/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:42087 errors:0 dropped:0 overruns:0 frame:0
TX packets:27823 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:50751619 (50.7 MB) TX bytes:2833710 (2.8 MB)

iwconfig

lo no wireless extensions.

eth0 no wireless extensions.

wlan0 IEEE 802.11bgn ESSID:"Rishi"
Mode:Managed Frequency:2.462 GHz Access Point: 00:18:742:CE:22
Bit Rate=54 Mb/s Tx-Power=20 dBm
Retry long limit:7 RTS thr=2347 B Fragment thrff
Power Managementff
Link Quality=55/70 Signal level=-55 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:10 Missed beacon:0

sudo lshw -C network

*-network
description: Ethernet interface
product: RTL8111/8168B PCI Express Gigabit Ethernet controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:02:00.0
logical name: eth0
version: 06
serial: f0:de:f1:8c:df:e9
size: 10Mbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half latency=0 link=no multicast=yes port=MII speed=10Mbit/s
resources: irq:41 ioport:5000(size=256) memory:d0404000-d0404fff memory:d0400000-d0403fff
*-network
description: Wireless interface
product: RTL8188CE 802.11b/g/n WiFi Adapter
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:08:00.0
logical name: wlan0
version: 01
serial: 38:59:f9:e0:82:c2
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=rtl8192ce driverversion=2.6.38-8-generic firmware=N/A ip=172.16.6.252 latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn
resources: irq:19 ioport:3000(size=256) memory:d1d00000-d1d03fff

lsmod

Module Size Used by
cryptd 19801 0
aes_i586 16956 1
aes_generic 38023 1 aes_i586
rfcomm 38125 8
binfmt_misc 13213 1
sco 17779 2
bnep 17785 2
l2cap 48656 16 rfcomm,bnep
parport_pc 32111 0
ppdev 12849 0
snd_hda_codec_hdmi 27479 1
snd_hda_codec_conexant 43782 1
joydev 17322 0
snd_hda_intel 24140 2
snd_hda_codec 90901 3 snd_hda_codec_hdmi,snd_hda_codec_conexant,snd_hda_ intel
snd_hwdep 13274 1 snd_hda_codec
snd_pcm 80244 3 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec
snd_seq_midi 13132 0
snd_rawmidi 25269 1 snd_seq_midi
i915 450944 3
snd_seq_midi_event 14475 1 snd_seq_midi
snd_seq 51291 2 snd_seq_midi,snd_seq_midi_event
arc4 12473 2
btusb 18160 2
rtl8192ce 120897 0
thinkpad_acpi 73750 0
snd_timer 28659 2 snd_pcm,snd_seq
nvram 14035 1 thinkpad_acpi
rtlwifi 78961 1 rtl8192ce
drm_kms_helper 40745 1 i915
bluetooth 65565 9 rfcomm,sco,bnep,l2cap,btusb
drm 180037 4 i915,drm_kms_helper
snd_seq_device 14110 3 snd_seq_midi,snd_rawmidi,snd_seq
mac80211 257001 2 rtl8192ce,rtlwifi
i2c_algo_bit 13184 1 i915
video 18951 1 i915
cfg80211 156212 2 rtlwifi,mac80211
psmouse 73312 0
snd 55295 15 snd_hda_codec_hdmi,snd_hda_codec_conexant,snd_hda_ intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi, snd_seq,thinkpad_acpi,snd_timer,snd_seq_device
serio_raw 12990 0
soundcore 12600 1 snd
snd_page_alloc 14073 2 snd_hda_intel,snd_pcm
lp 13349 0
parport 36746 3 parport_pc,ppdev,lp
usbhid 41704 0
hid 77084 1 usbhid
r8169 42534 0
sdhci_pci 13623 0
sdhci 22720 1 sdhci_pci
ahci 21591 2
libahci 25548 1 ahci

[varunendra]

ONE IMPORTANT CONCERN I HAVE - I hope that this is not private information and that my privacy will be maintained. If any of the data below could harm my privacy, please let me know.

No, none of these outputs ever contain any sensitive data which may be exploited by anyone for privacy violation or any other kind of harm. Be assured on this one.

Onto your problem. Nothing seems wrong to me with your wireless connection. In fact, it is your ethernet interface whose details ring a bell to me:

sudo lshw -C network

*-network               
       description: Ethernet interface
       product: RTL8111/8168B PCI Express Gigabit Ethernet controller
       vendor: Realtek Semiconductor Co., Ltd.
<snip>
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half latency=0 link=no multicast=yes port=MII speed=10Mbit/s

This hardware-driver combination is infamous for speed and packet-drop issues on wired connection. If you find yourself struggling with a wired connection too, this post may hopefully be helpful: http://ubuntuforums.org/showthread.p...81&postcount=6

However, I don't think it may interfere with the wireless connection. So I may have to do some research on your wireless issue before I can come up with something significantly helpful. For now, please post outputs of:

cat /etc/resolv.conf
ping -c 4 google.com

PS:
Please wrap your outputs in [code] and [/code] tags as I told earlier.