Poor wireless performance on ubuntu 11.10

[webberdar]

Hello there,

I have been struggling to get my wireless working properly for several days now and just cant get any further with it on my own. Could someone please help?

Here is some basic info that may help:

sudo iwconfig
lo        no wireless extensions.

wlan1     IEEE 802.11bgn  ESSID:off/any  
          Mode:Managed  Access Point: Not-Associated   Tx-Power=16 dBm   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:on
          
eth0      no wireless extensions.

Please let me know if you need more.

Thanks,
Darcy

[Bulkley]

Considering that you are using Ubuntu can we assume that you are using network-manager for wifi?

Your wifi card is listed as wlan1. Is there a wlan0? What I'm getting at is the BIOS setup. There is nothing wrong with wlan1; it just makes me ask.

[webberdar]

Hi Bulkley. Yes I am using network-manager. Im not sure if there is a wlan0, I dont think so, how could I tell?

I can get wifi, but I need to be within a meter and it is quite slow making it essentially useless. Do you think there is a way around this? I notice other people are having similar problems with their ath9k driver and some of them have managed to fix it but I have tried everything I can find on the forums/help. Cheers, D

[garvinrick4]

Hi Webberdar,
There are various Network cards that all have different drivers. Some of the drivers are in the linux kernel
and some have to be installed. You must know what type of card you have, if you open a terminal and
and copy and paste this line will tell you your card. Copy and paste it to your Thread here and 90% of time
users will no what driver you have to install and how it can be accomplished.

lspci -nn | grep 0280

or

lspci -k

will show all card and drivers and if is a kernel driver, can just copy and paste Network Controller (wifi card)

Lots of good network users here in the Forums, if you post your results will get some help.

[webberdar]

Cool thanks Garvinrick,

Much appreciated, I really have been at this for ages but just seem to be getting nowhere.

Here are my results:

lspci -nn | grep 0280
02:00.0 Network controller [0280]: Atheros Communications Inc. AR9485 Wireless Network Adapter [168c:0032] (rev 01)

lspci -k
00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
    Subsystem: ASUSTeK Computer Inc. Device 1427
    Kernel driver in use: agpgart-intel
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
    Subsystem: ASUSTeK Computer Inc. Device 1427
    Kernel driver in use: i915
    Kernel modules: i915
00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04)
    Subsystem: ASUSTeK Computer Inc. Device 1427
    Kernel driver in use: mei
    Kernel modules: mei
00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 05)
    Subsystem: ASUSTeK Computer Inc. Device 1427
    Kernel driver in use: snd_hda_intel
    Kernel modules: snd-hda-intel
00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b5)
    Kernel driver in use: pcieport
    Kernel modules: shpchp
00:1c.1 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 2 (rev b5)
    Kernel driver in use: pcieport
    Kernel modules: shpchp
00:1c.3 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 4 (rev b5)
    Kernel driver in use: pcieport
    Kernel modules: shpchp
00:1d.0 USB Controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 05)
    Subsystem: ASUSTeK Computer Inc. Device 1427
    Kernel driver in use: ehci_hcd
00:1f.0 ISA bridge: Intel Corporation QS67 Express Chipset Family LPC Controller (rev 05)
    Subsystem: ASUSTeK Computer Inc. Device 1427
    Kernel modules: iTCO_wdt
00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller (rev 05)
    Subsystem: ASUSTeK Computer Inc. Device 1427
    Kernel driver in use: ahci
00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller (rev 05)
    Subsystem: ASUSTeK Computer Inc. Device 1427
    Kernel modules: i2c-i801
02:00.0 Network controller: Atheros Communications Inc. AR9485 Wireless Network Adapter (rev 01)
    Subsystem: AzureWave Device 2086
    Kernel driver in use: ath9k
    Kernel modules: ath9k
03:00.0 USB Controller: Fresco Logic Device 1009 (rev 02)
    Subsystem: ASUSTeK Computer Inc. Device 1427
    Kernel driver in use: xhci_hcd

[wildmanne39]

Hi, here is a link please do what is in post 6.
http://ubuntuforums.org/showthread.p...1#post11824281
Thanks

[webberdar]

Hey Wildmanne

Thanks for the reply, but unfortunately I have already done that and it didn't work (I believe I read this in one of your earlier posts elsewhere on the forum).

[webberdar]

I should be able to get wireless more than a couple of meters from my router shouldn't I?

I have also found that if I sit right next to router, I can connect. But if I walk a couple of meters away it loses the connection and is unable to connect again, even if I sit right next to the router .

Does anyone have any other ideas?

Thanks
Darcy

[wildmanne39]

Hi, please explain exactly what the issue is.

Does it disconnect or is it slow I am thinking slow.

If so you can set your settings to match the screenshots that I have attached.

I also recommend turning power management off.

gksudo gedit /etc/pm/power.d/wireless

(this will create or edit a configuration file that will override the default powermanagement behavior) and enter the following:

#!/bin/sh

/sbin/iwconfig wlan0 power off

above exit0, then save gedit, close and reboot.
Thanks

[webberdar]

Hi Wildmanne, thanks for helping me out here. The problem is not really slow wireless, it is the range at which I can receive wireless from the router. To get decent wifi I need to be within 1 meter of the router, at 2 meters it is very slow and it disconnects often, and further it cant find any wifi connections.

I will try your suggestions and get back to you. Cheers,
Darcy