Problem with wireless/wired connections.

**varunendra** · June 9th, 2013

Originally Posted by salih1

here it is.. http://paste.ubuntu.com/5747563/

Hmm.. looks much better now. But I couldn't decipher the encryption type from the outputs. So just make sure that the encryption type in the router/access-point is set to pure WPA2-PSK (AES) type, and especially NOT WPA/WPA2 mixed mode.

Then, do the following -

Code:

sudo iwconfig wlan0 power off
sudo modprobe -rfv rt2800pci
sudo modprobe -v rt2800pci nohwcrypt=Y

Then try to connect and see if you can.

Sometimes it also helps if you 'Save' the correct security type and security-key in the Network Manager itself (under "Wireless Security" tab in your wireless connection settings box in Network Manager).

**salih1** · June 9th, 2013

There were no security enabled for this network...It is open. I dont know why the output shows like that. I eneterd that code and it tried to reconnect but failed. Everything is fine with usb modem. What to do????
I also tried with security enabled and assignd a paswd(not in mixd mode) but still no change..

**varunendra** · June 10th, 2013

Originally Posted by salih1

There were no security enabled for this network...It is open. I dont know why the output shows like that. I eneterd that code and it tried to reconnect but failed. Everything is fine with usb modem. What to do????
I also tried with security enabled and assignd a paswd(not in mixd mode) but still no change..

A couple of suggestions, 1st one first, both together if required -

1) Try changing the channel to 1, 6 or 11 - the one that is least used in your neighborhood (currently you are using channel 4). Channel 6 is something I personally *believe* should be good based on some theoretical knowledge, but have absolutely no practical experience or evidence.

Those who have both a good level of theoretical knowledge as well as practical experience recommend channels 1 and 11 the most. So try them first.

2) Try Wicd and remove Network Manager altogether exactly as per steps given here : https://help.ubuntu.com/community/WI...e_.2BAC8_Unity

Please note that you won't get the tray icon on the top right corner like network manager. Wicd does not have that. It needs to be opened from Applications menu like other normal applications.

Use the commands in my previous post with wicd as well if required.

Everything else looks good.

**salih1** · June 11th, 2013

Changed channels several times..nothing happened.
Installed Wicd, did some changes in settings...still nothing.
It shows a problem in obtaining IP address.( connection is open)
wired is okey..

Checked wicd with usb modem..seems fine.
What is happening with ma lap

**varunendra** · June 11th, 2013

Originally Posted by salih1

It shows a problem in obtaining IP address.( connection is open)
wired is okey..

Hmm.. okay, please do -

Code:

echo "options rt2800pci nohwcrypt=Y" | sudo tee -a /etc/modprobe.d/rt2800pci.conf

.. do a reboot after this, try to connect, let it fail, then post back the outputs of -

Code:

lsmod
iwconfig
ifconfig
cat /etc/resolv.conf
sudo iwlist wlan0 scan
dmesg | grep -iE 'rt2|wlan'
cat /var/log/syslog | grep -iE 'rt2|wlan|dhcp|dhclient|network'
modinfo rt2800pci

And keep the security to either pure WPA2-PSK (AES) or disabled in the router.

EDIT:
Edited the dmesg command and added cat /etc/resolv.conf
Please post as per updated commands.