Ubuntu 12.04 Slow Wireless

[vDub2000]

Try this...

http://www.unixmen.com/resolve-slow-...natty-narwhal/

Thanks, but I've already tried those solutions and none worked.

[vDub2000]

Hi, leave that setting in and set your wireless setting to match the sreenshots.

Also some people have had to change the speed of there connection in the router to just g speed I believe.
Thanks

Still no difference.

It's a bummer, because I'd like to finally ditch Windows and use Ubuntu (especially when the Linux version of Steam comes out) but I don't wanna have to go back to a wired connection.

[comet]

I'm having a similar issue with my Broadcom BCM4322 wifi adapter. I'm using an HP dv4 laptop with this particular wireless chipset, and I'm getting speeds at about .25Mbit/sec. It is ridiculously slow and I'm not quite sure what can be done to resolve it. Oddly enough, I've used different versions of Ubuntu, Windows and even FreeBSD on this laptop without these types of wireless issues.

[mickey946]

Hi, please try:

sudo modprobe -r rtl8192cu

sudo modprobe rtl8192cu swenc=1

do not reboot, if it works we will need to make it permanent.
Thanks

I have the same problem, but the wireless connection is slow on other sites too (checked on speedtest.net and got only 0.9 MB/s when I usually get 3.5 MB/s in Windows and in 11.10)

I run those two commands you suggested and the connection suddenly got great!
How do I keep it permanent?

[wildmanne39]

Hi comet, have you changed your settings to match the screenshots in post 9? if so please start your own thread and post a link to it here because it gets confusing working on more then one persons issue while the OP's issue has not been resolved.
Thanks

[KYSL]

open terminal and type:
sudo rmmod iwlwifi
sudo modprobe iwlwifi 11n_disable=1

if it works make it permanent by:
opening/creating /etc/modprobe.d/options.conf and adding the following line
options iwlwifi 11n_disable=1

it resolved my issue. In my case in 11.10 the iwlwifi was defined as wilagn.

it sucks as this issue was known in the previous release and did not get resolved out of the box. Shame on you Ubuntu. Anyway, hope it helps.

[vDub2000]

open terminal and type:
sudo rmmod iwlwifi
sudo modprobe iwlwifi 11n_disable=1

if it works make it permanent by:
opening/creating /etc/modprobe.d/options.conf and adding the following line
options iwlwifi 11n_disable=1

it resolved my issue. In my case in 11.10 the iwlwifi was defined as wilagn.

it sucks as this issue was known in the previous release and did not get resolved out of the box. Shame on you Ubuntu. Anyway, hope it helps.

Tried it... says ERROR: Module iwlwifi does not exist in /proc/modules

[KYSL]

Tried it... says ERROR: Module iwlwifi does not exist in /proc/modules

please check the driver name from the "connection information" menu and match it to the above command.

[vDub2000]

please check the driver name from the "connection information" menu and match it to the above command.

I ended up doing that too, except I got some sort of fatal error as I did so.

[TheNessus]

in 11.10 I had really slow internet connection when using wifi, but only at my home. I have broadcom 4431.


It's ONLY broadcom that does these issues. Anyway, the conclusion is that my adapter is in conflict with my wireless router, as it does not do this slow connection bug when I am at campus or a cafe, for instance.

For a good connection I had to re-connect to the wireless network, but then it slowed down again after a while.

The issue is resolved for me in 12.04. Don't ask me why. But I still have a very slow download when using torrents when it is working fast if I do it on Windows.