Acer TravelMate 4310 WLAN and Ubuntu 9.04

I have the following problem:

My Wifi works without problems under kernel 2.6.28-11 but it fails under kernel 2.6.28-13. I’m using the ath_pci driver.

Apparently there has been a change in the ath_pci wifi driver in kernel 2.6.28-13 that my hardware do not agree with.

Some people reports that the ath5k driver should be working but I can’t make it work on my machine.

By the way – I’m using Wicd as my wireless network manager without problems under kernel 2.6.28-11 in Gnome and KDE.

My advice for the moment is to stick with the 2.6.28-11 kernel to avoid wifi problems.

See also this link at Ubuntu forums