I have been running Lubuntu 13.04 with the Wifi working fine for a couple weeks until today, when the connection broke and was never able to reconnect successfully. The router is a motorola gateway combo which I'm currently connected to wirelessly via my windows 7 laptop--no problems with it as far as I can discern.
Perhaps importantly the problem seemed to disappear when I disabled the WPA2-PSK AES encryption from the router and I was able to connect the Lubuntu machine to the Wifi, but then I decided to test that 'solution' by manually disconnecting and reconnecting via NetworkManager. When I attempted to reconnect to the unsecured wireless, NetworkManager prompted me for a password. Weird.
My problem is very similar to Why can't my Wifi connect or disconnect? except it's occuring in Lubuntu 13.04.
dmesg | grep wlan0
I get a series of messages like this in a loop (i'm not sure where the loop begins, assuming the driver messages are the end):
wlan0: associate with [router mac address] (try 1/3) wlan0: RX AssocResp from [router mac address] (capab=0x411 status=0 aid=5) wlan0: associated wlan0: authenticate with [router mac address] wlan0: send auth to [mac address] (try 1/3) wlan0: authenticated rt73usb 1-8:1.0 wlan0: disabling HT as WMM/QoS is not supported by the AP rt73usb 1-8:1.0 wlan0: disabling VHT as WMM/QoS is not supported by the AP
NOTES: The messages beginning 'rt73usb' began after the problem at hand; 'rt73usb' is the name of the wireless driver
wlan0 IEEE802.11bg ESSID:off/any Mode: Managed Access-Point: Not-Associated Tx-Power=20 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management: off
sudo lshw -c network yields
description: Wireless interface physical id: 1 bus info: usb@1:8 logical name: wlan0 serial:[mac address] capabilities: ethernet physical wireless configuration: broadcast=yes driver=rt73usb driverversion=3.8.0-26-generic \ firmware=1.7 link=no multicast=yes wireless=IEEE 802.11bg
A really strange aspect of this problem is that, as far as I could tell, I had not updated any software packages for hours leading up to the connection problem.
Things I have tried already:
1)soft blocking wifi with
rfkill block wifi and restarting the network-manager service with
service network-manager restart
4)I attempted to remove NetworkManager via aptitude to replace with wicd, but was informed that
lubuntu-desktop 'depends' on
5)As mentioned before, I disabled WPA2-PSK AES encryption in the router and seemed to make some headway, but could not reconnect after a manual disconnect.
/var/log/apt/history.log to see what software changes had been made but the problem started today(7.24.2013) and history.log just has a Start-Date and End-Date with the same date/time stamp.
Does anyone have any ideas as to what could have caused this? Has anyone successfully removed Network Manager from lubuntu and replaced it?