Wireless issues with an Asus N76VZ / Ubuntu 12.04/Kernel 3.4/Intel Wireless-N 2230

[blinduck]

Hi everyone, fairly new to Linux. I've installed Ubuntu 12.04 on my Asus N76VZ, and I'm having issues with the wireless connection dropping every few minutes. I can disconnect and reconnect and it will then work again.

I've already tried disabling IPV6, but that doesn't seem to do anything for me.

From: -lspci
Network controller: Intel Corporation Centrino Wireless-N 2230 (rev c4)

From: -ifconfig
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:5791 errors:0 dropped:0 overruns:0 frame:0
TX packets:5791 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:558665 (558.6 KB) TX bytes:558665 (558.6 KB)

wlan0 Link encap:Ethernet HWaddr 68:5d:43:74:0f:09
inet addr:192.168.1.36 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:136930 errors:0 dropped:0 overruns:0 frame:0
TX packets:85434 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:175053810 (175.0 MB) TX bytes:11473651 (11.4 MB)

From -iwconfig wlan0
wlan0 IEEE 802.11bgn ESSID:"SINGTEL-2042"
Mode:Managed Frequency:2.462 GHz Access Point: 98:2C:BE:EDB:B2
Bit Rate=6 Mb/s Tx-Power=0 dBm
Retry long limit:7 RTS thrff Fragment thrff
Power Managementff
Link Quality=41/70 Signal level=-69 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:3741 Invalid misc:457 Missed beacon:0

And from: sudo lshw -C network
*-network
description: Wireless interface
product: Centrino Wireless-N 2230
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:03:00.0
logical name: wlan0
version: c4
serial: 68:5d:43:74:0f:09
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwlwifi driverversion=3.4.0-030400-generic firmware=18.168.6.1 ip=192.168.1.36 latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn
resources: irq:45 memory:f7900000-f7901fff
*-network UNCLAIMED
description: Ethernet controller
product: AR8161 Gigabit Ethernet
vendor: Atheros Communications Inc.
physical id: 0
bus info: pci@0000:04:00.0
version: 08
width: 64 bits
clock: 33MHz
capabilities: pm pciexpress msi msix bus_master cap_list
configuration: latency=0
resources: memory:f7800000-f783ffff ioport:d000(size=128)

[chili555]

Let's try a driver parameter. Please do:

sudo modprobe -r iwlwifi
sudo modprobe iwlwifi 11n_disable=1

If it helps, we'll write one quick file and make it persistent.

[blinduck]

This seems to have helped! How do I make that permanent?

[chili555]

This seems to have helped! How do I make that permanent?

Please do:

sudo gedit /etc/modprobe.d/iwlwifi.conf

A new, empty file will open. Use kate or leafpad or any text editor if you don't have gedit. Add a single line:

options iwlwifi 11n_disable=1

Proofread, save and close the text editor. You should be all set.

So the searchers can find the answer, please use thread tools at the top to mark Solved.

Have fun!

[blinduck]

Ok scratch that, nope it doesn't seem to work. Connection still drops frequently. Seems to be a random thing, doesn't follow any pattern..

Any other suggestions?

[chili555]

You might try a different parameter:

sudo gedit /etc/modprobe.d/iwlwifi.conf

Change the contents to:

options iwlwifi 11n_disable=1 bt_coex_active=N

Proofread, save and close the text editor. Reboot and let us have your report.

[giannilinux]

Let's try a driver parameter. Please do:

sudo modprobe -r iwlwifi
sudo modprobe iwlwifi 11n_disable=1

If it helps, we'll write one quick file and make it persistent.

It worked for me!
Dell Inspiron 7520
08:00.0 Network controller: Intel Corporation Centrino Wireless-N 2230 (rev c4)

[burna]

Let's try a driver parameter. Please do:

sudo modprobe -r iwlwifi
sudo modprobe iwlwifi 11n_disable=1

If it helps, we'll write one quick file and make it persistent.

That worked for me, too!

Asus N76V
03:00.0 Network controller: Intel Corporation Centrino Wireless-N 2230 (rev c4)

Great, thank you!

[Grinage]

this seems to be a persistent problem with all intel Centrino variants, i have option of ditching my Centrino and using Killer's Bigfoot Wireless instead, are there similar issues with that particular wifi card?

Additionally after a kernel update sometimes the problem comes back and becomes persistent regardless of what solution may have worked in the past.

[chili555]

i have option of ditching my Centrino and using Killer's Bigfoot Wireless instead, are there similar issues with that particular wifi card?

The Bigfoot wireless I am familiar with uses the driver ath9k. Search this forum and see if there are ever any disconnects and drops or slow speeds with ath9k. Here, for example: http://ubuntuforums.org/showthread.p...ighlight=ath9k

Have you tried turning N speeds off at the router? My iwlwifi device is about perfect.