Everything worked fine in previous Ubuntu 10.10. I installed new Natty 11.04 and wireless started behaving poorly.
The performance is so random, sometimes it works fine and sometimes, all it does is connect to the wireless AP and just stall. Doing a ping 192.168.1.1 (AP address) results in 50 - 90% packet loss.
I found http://ubuntuforums.org/archive/index.php/t-1592846.html and the proposed solution helped.
sudo rmmod iwlagn sudo modprobe iwlagn 11n_disable=0
And to permanently fix this, i just created /etc/modprobe.d/intel-centrino-n1000-iwlagn-enable11n.conf with following line.
options iwlagn 11n_disable=0
Things seem to work fine now.
wlan0 IEEE 802.11bgn ESSID:"SthaWiFi" Mode:Managed Frequency:2.437 GHz Access Point: 00:23:CD:F0:17:E2 Bit Rate=150 Mb/s Tx-Power=14 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:off Link Quality=70/70 Signal level=-35 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:435 Invalid misc:58 Missed beacon:0
My question, does anyone else have this issue? And is there a better fix for this?
EDIT: No I still do not have a stable connection with the settings above? Has anyone had good experience with N network?
Also, I figured, in 10.10 the N network was disabled. Doing the same in Natty with /etc/modprobe.d/iwlagn.conf
options iwlagn 11n_disable50=1 11n_disable=1
Stabilizes the network, but can only get G connection. Help?