On Sat, Apr 15, 2017 at 10:06:44PM -0500, Colton Lewis wrote: > After upgrading to 6.1, I have been unable to maintain an internet > connection for more than a few seconds at a time. > > The machine in question uses an Atheros AR9281 for a wifi connection. > All other machines on that wifi network have no problems. The Atheros > card worked perfectly yesterday. > > Pinging the machine over a long period of time gives about 40% packet > loss. Trying to access the internet in any way often seems to work for > a few seconds, then hangs. > > It may work in short spurts over the next couple of minutes before > hanging for good. I have monitored this with tcpdump and noticed no > tcp packets sent when the connection is hung. > > What could be happening and how can I fix this? > > Sincerely, > Colton Lewis
I would guess you are running into some issue with 802.11n support which was added to this driver in 6.1. You should be able to restore the previous behaviour with: ifconfig athn0 mode 11g Please tell me more details about your setup. Which AP you are using, how you configure the athn0 interface (output of ifconfig athn0 as a non-root user), whether your wifi is alone on its channel or not (show the output of ifconfig athn0 scan). Also show me beacons of your AP. Connect to your AP as usual, and then run: tcpdump -n -i athn0 -y IEEE802_11_RADIO -v -s 4096 -l | grep beacon This prints one line per beacon received. Please show me one such line.
