So my wi-fi card is a Intel 5100 AGN and so far doesnt works. if anyone managed to make it work give me any hint. Ubuntu user :) tried disabling ipv6 - no result
5 Answers
There is a problem with kernel 3.0.0.x and Intel wifi under 802.11n.
We are all waiting for the fix in the kernel.
There is a workaround:
Create a file
/etc/modprobe.d/intel_11n_disable.conf
containing :options iwlagn 11n_disable=1
sudo update-initramfs -u
reboot or
sudo modprobe -r iwlagn && sudo modprobe iwlagn
Ref:
-
This worked for me! Thanks! Asus u52f with 02:00.0 Network controller: Intel Corporation Centrino Advanced-N + WiMAX 6250 (rev 5f)– FitoriaOct 30, 2011 at 3:35
-
It's still not fixed in kernel 3.3-precise. This workaround works like a charm. Mar 24, 2012 at 11:16
-
Note that for 12.04 and later, you need to replace all references of iwlagn with iwlwifi (at least, according to what I've read). That's what worked for me with my Intel Pro Wireless 5100 on 13.04.
Create a file
/etc/modprobe.d/intel_11n_disable.conf
containing:options iwlwifi 11n_disable=1
sudo update-initramfs -u
- reboot
(other answers say to run modprobe, but it always said my wifi was in use, even when disabled, so reboot was required for me)
Did disable via options iwlagn 11n_disable=1
After a kernel update to 3.0.0.13-generic i tried to set
options iwlagn 11n_disable=0
This did enable N speed without the reappearance of the lost and slow connections or dead dd-wrt access points.
Update: Since I got downvoted, I changed the answer a bit:
Backup the .deb files, just in case:
sudo apt-get download network-manager network-manager-gnome
This will download two .deb package files in your home directory
Purge network manager and install wicd
sudo apt-get purge network-manager network-manager-gnome sudo apt-get install wicd wicd-gtk
Reboot. Try to connect using wicd.
If anything goes wrong, just purge wicd and reinstall network manager:
sudo apt-get purge wicd wicd-gtk
sudo dpkg -i network-manager*.deb
This :
There is a problem with kernel 3.0.0.x and Intel wifi under 802.11n. We are all waiting for the fix in the kernel. There is a workaround:
Create a file /etc/modprobe.d/intel_11n_disable.conf containing :
options iwlagn 11n_disable=1
sudo update-initramfs -u
reboot or sudo modprobe -r iwlagn && sudo modprobe iwlagn
Ref: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/871254
works for me, EXCEPT that I need to do it every time I reboot :(
I wrote a script to spare me a bit of pain but I'd be SO grateful if someone could tell me why it's not persistent and mainly how to make it persistent!
Thanks everybody!
P.S. : my wifi controller details:
$ lspci -v
...
08:00.0 Network controller: Intel Corporation WiFi Link 5100
Subsystem: Intel Corporation WiFi Link 5100 AGN
Flags: bus master, fast devsel, latency 0, IRQ 45
Memory at c0300000 (64-bit, non-prefetchable) [size=8K]
Capabilities: <access denied>
Kernel driver in use: iwlwifi
Kernel modules: iwlwifi
...