Unreliable WiFi disconnecting often

[asdf45df]

I'm running Mint 12 64 bit and my WiFi chipset is an Intel Centrino Advanced-N 6205.

My WiFi connection at home works fine. Here I am connecting to a wireless G router with WPA2 PSK security.

On campus, however, is another story. There are two networks available there - one an old G network with a WEP key, and another new one which has N connectivity and uses 802.1x PEAP security with a user name and password. Both of these networks are horribly unreliable for me - the connection only works for a few minutes before either websites refuse to load while the system claims it is still connected or it disconnects outright. These connections were stable on Windows.

At first I thought the connections might be dropping because I have the TLP power management package installed and configured to save power on the WiFi chip, but I tried disabling this and it made no difference. Also, this wouldn't explain why the connection is stable at home. I imagine this isn't a driver issue either, for the same reason.

I googled around a bit and found some suggestions to try WiCD instead of the gnome network manager but I somehow managed to make gnome-shell dissapear when trying to do this and only Gnome classic and MATE were available at the login screen (fixed now) - is this worth trying and what would be the right way to do it?

[kaiseris]

I have Acer Aspire 5738Z with Atheros AR928X wifi card. And my laptop gets disconnected quite often. Wifi disconnects and reconnects by itself. Sometimes every few minutes, sometimes less often. I don't have this problem on Windows 7 or other distros I've tried.
My router is Linksys E2000 and I'm using N standard with WPA2 security.
Any ideas?

[AlbertP]

You can run this command in terminal, it's known to fix a lot of Atheros 9xxx issues:

Code: Select all

sudo sh -c 'echo "options ath9k nohwcrypt" > /etc/modprobe.d/ath9k.conf'