Ubuntu: Wireless connection drops then password rejected on 12.04


I'm using an Acer Aspire 7520, with a AR242x / AR542x Wireless Network Adapter with a clean install of 12.04 from disk.

On bootup my wireless connection works automatically, for a while. Then after about 10/20 minutes of use, the connection drops, and when it attempts to reconnect it repeatedly asks me for the wireless password. As the password is pre-entered I click Connect, and wait a minute or so while it attempts to connect, then it asks again, as if the router hasn't accepted the password this time. If I reboot, it connects no problem...for while then the process repeats.

I tried adding blacklist acer_wmi to /etc/modprobe.d/blacklist.conf, but this had no effect.

Anyone got any suggestions?

{edit} /var/log/syslog shows: ath5k phy0: gain calibration timeout (2467MHz)

There's a bunch of lines like this. Anyone got a clue what that means?


Looks like this is a bug with kernel 3.2.

This bug report shows more.


I upgraded the kernel to 3.5, and now all is well.

Thanks for the help.

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