Broadcom 4313 causes heavy interference with wireless clients after 13.04 upgrade
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
bcmwl (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned |
Bug Description
After Ubuntu 13.04 upgrade, other wireless clients cannot access my WPA2-AES-PSK home network. They encounter high packet loss when physically near my Ubuntu system, but function fine when physically close to the wireless router and away from my system or when my system is off. My system appears to be causing heavy interference with the other clients.
My wireless adapter is a Broadcom 4313 (built into the HP G72 laptop).
Interference starts on boot and runs continuously until poweroff, even when my system should not be transmitting or receiving network packets.
This began happening just after upgrading to 13.04, and did not happen with earlier versions of Ubuntu. I have been updating daily.
The wireless network is visible (not hidden SSID), and in mixed 802.11n/g mode.
I do not see unexpected network traffic on the wireless network card when running Wireshark on the offending system, although I can only see the ethernet packets; I cannot seem to put my card into monitor mode.
If necessary, I should be able to get a third computer capturing packets in monitor mode to see if my system is flooding RF packets, but that would require a bunch of time to set up.
Card info:
# lspci -vvnn | grep 14e4
03:00.0 Network controller [0280]: Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN Controller [14e4:4727] (rev 01)