Slow Wireless Connection On Linux Mint

dan961

Hey, I recently installed Linux Mint 11. Everything's good but i'm having a very slow wireless connection on it. The download speed is normal but the pages are taking forever to load. What could be the reason? By the way i'm a total newbie at linux.

shekvaL

disable the ipv6 , Enter Firefox , and type ( about:config) and search for ipv6 , the column that says (network.dns.disableIPv6) change the value from false to true.

dan961

shekvaL wrotedisable the ipv6 , Enter Firefox , and type ( about:config) and search for ipv6 , the column that says (network.dns.disableIPv6) change the value from false to true.

Not working.

shekvaL

right click on network manager icon, choose edit connection..
move to wireless tab, highlight to your wifi connection and choose edit...
move to ipv6 settings tab, make sure in method selection is "Ignore".. if its other than that, please change to "Ignore". apply and close.

hussam

I doubt disabling ivp6 really improves connectivity speed. never affected me
but try

echo "blacklist ipv6" > /etc/modprobe.d/blacklist_ipv6.conf

as root from a terminal
then reboot.

dan961

shekvaL wroteright click on network manager icon, choose edit connection..
move to wireless tab, highlight to your wifi connection and choose edit...
move to ipv6 settings tab, make sure in method selection is "Ignore".. if its other than that, please change to "Ignore". apply and close.

it's "ignore" by default

xterm

Are you sure the speed is the problem and not the name resolution?

shekvaL

ok open Firefox ( about:config) , in the filter bar write :
network.http.pipelining change the value from false to true.

in the filter bar write ( network.http.pipelining.maxrequests )
change value from 4 to 8

in the filter bar write ( network.http.proxy.pipelining )
change value from false to true

in the filter bar write ( network.dns.disableIPv6)
change the value from false to true ( i assume you made this change )

in the filter bar write ( plugin.expose_full_path )
change value from false to true

than make an new integer
Right click -> New -> Integer , and write ( nglayout.initialpaint.delay )
then it will tell you enter integer value , write 0 then click enter

then
Right click -> New -> Integer
content.notify.backoffcount
then it will tell you to enter integer value , write 5 , then ok

then Right click -> New -> Integer
preference name write : ( ui.submenuDelay )
enter integer value write : ( 0 )

Open a new tab. Type “about:config”
then Right click -> New -> Integer
preference name : browser.cache.memory.capacity
value : 16384

wait a few minutes , or maybe a system reboot.

shekvaL

by the way the last integer ( browser.cache.memory.capacity ) , will increase your memory usage

shekvaL

hussam wroteI doubt disabling ivp6 really improves connectivity speed. never affected me
but try
echo "blacklist ipv6" > /etc/modprobe.d/blacklist_ipv6.conf
as root from a terminal
then reboot.

what most software does: They will first try to use IPv6 , then back to IPv4 if their application fails to use IPv6.

When you enter the address of a website, Firefox will first try to find the IP address (DNS name) via IPv6.if operation fails the procedure is repeated using IPv4.
In theory, it sounds good, as the day will be active IPv6, the software will work automatically with no need to be reconfigured.
In practice, waiting in vain for a response DNS IPv6 adds a small unnecessary delay (since currently almost no provider offers IPv6 access, except private networks or experimental). Source

dan961

shekvaL wroteok open Firefox ( about:config) , in the filter bar write :
network.http.pipelining change the value from false to true.

in the filter bar write ( network.http.pipelining.maxrequests )
change value from 4 to 8

in the filter bar write ( network.http.proxy.pipelining )
change value from false to true

in the filter bar write ( network.dns.disableIPv6)
change the value from false to true ( i assume you made this change )

in the filter bar write ( plugin.expose_full_path )
change value from false to true

than make an new integer
Right click -> New -> Integer , and write ( nglayout.initialpaint.delay )
then it will tell you enter integer value , write 0 then click enter

then
Right click -> New -> Integer
content.notify.backoffcount
then it will tell you to enter integer value , write 5 , then ok

then Right click -> New -> Integer
preference name write : ( ui.submenuDelay )
enter integer value write : ( 0 )

Open a new tab. Type “about:config”
then Right click -> New -> Integer
preference name : browser.cache.memory.capacity
value : 16384

wait a few minutes , or maybe a system reboot.

still not working :(

shekvaL

try connecting through cable " wired" and tell us if the problem resists

dan961

shekvaL wrotetry connecting through cable " wired" and tell us if the problem resists

already tried.The speed is the same

shekvaL

Firefox employs a technique to identify phishing sites. Firefox contacts Google.com for every HTTP request and then it saves the results into ‘urlclassifier3.sqlite’ in your profile. If file grows more than 50MB, it leads to heavy drive thrashing and slow operation.

1. Open Firefox and go to ‘Preferences’ which could be in Tools menu or Edit Menu.
2. Open the ‘Security’ tab, you will find the 2 check box captioned in
a] “Tell me if the site I’m visiting is a suspected Attack site”
b] “Tell me if the site I’m visiting is a suspected forgery”
3. Turn off these two check boxes
4. Delete the following ‘sqlite’ frile from your profle using rm command.
rm .mozilla/firefox/*/urlclassifier3.sqlite
5. Restart the Firefox.

1. Edit the file /etc/modprobe.d/blacklist using any of the text editor (I used Emacs)
sudo emacs -nw /etc/modprobe.d/blacklist
2. Add at the end of file the line:
blacklist ipv6

Have you tried using another browser ?

dan961

didn't work :/ and yes i tried chromium.Same Problem

shekvaL

enter this command : sudo gedit /etc/nsswitch.conf
Look for this line:
hosts: files mdns4_minimal [NOTFOUND=return] wins dns mdns4
change it to files dns wins

The line should read hosts: files dns wins when finished.

if things didn't work :
1) First confirm whether it is an MTU issue .Ref this
2)If yes note down the optimum MTU value
3)Set MTU temporarily using

sudo ifconfig wlan0 mtu 1492

( this will go after rebooting but if it gives affect , then its a MTU (Maximum Transmission Unit) problem and easy to solve

dan961

Changing hosts: files mdns4_minimal [NOTFOUND=return] wins dns mdns4 to hosts: files dns wins didn't work either. And apparently it's an MTU issue

ping -s 1464 -c1 google.com
PING google.com (209.85.146.105) 1464(1492) bytes of data.
72 bytes from bru01s01-in-f105.1e100.net (209.85.146.105): icmp_req=1 ttl=51 (truncated)

--- google.com ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 286.268/286.268/286.268/0.000 ms

ping -s 1465 -c1 google.com
PING google.com (209.85.146.105) 1465(1493) bytes of data.

--- google.com ping statistics ---
1 packets transmitted, 0 received, 100% packet loss, time 0ms

ping -s 1466 -c1 google.com
PING google.com (209.85.146.103) 1466(1494) bytes of data.

--- google.com ping statistics ---
1 packets transmitted, 0 received, 100% packet loss, time 0ms

shekvaL

ok use the command
sudo ifconfig wlan0 mtu 1492

then :
gksudo gedit /etc/network/interfaces

And then add "mtu 1492" in it for the particular interface. Here's an example:

iface wlan0 inet static
address 192.168.1.23
netmask 255.255.255.0
gateway 192.168.1.1
wireless-essid YOUR WIRELESS NAME
mtu 1492

Try opening a page .. is it normal now :) ?

dan961

i got this thing

 auto lo
iface lo inet loopback

how can i add the lines to it?

shekvaL

in /etc/NetworkManager/system-connections you will have seperate files for eth0 (wired),eth1(wired) wlan0(wireless) ,DSL connection etc
You can set MTU in GUI way as follows
right click NM icon on right top of the panel -edit connections-select the connection say auto eth0-click edit-set MTU and apply
Restart or run
sudo service network-manager stop
sudo service network-manager start