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?