In my last post about the Acer Aspire One (AA1) and Ubuntu 9.04, I mentioned that everything was working in Ath5k land. In retrospect, that post did gloss over a few details, so I thought I'd put up a special AA1 / Ubuntu 9.04 / Ath5k post to clarify a few things.
First off, in a fresh install, it probably just works. Maybe. Maybe not. I have not tried it yet. The AA1 I have started as Alpha 6, and has been doing near daily dist-upgrades to pick up new service along the way. As it pertains to the Ath5k module, new kernels and kernel modules. 18.104.22.168.14 is where I am at right now on the AA1. I saw a new kernel come down on a different test box earlier today, so I need to update again.
Previously on the AA1, under Mint, I was using ndiswrapper to get the wireless going, and when I first got the Ath5k stuff going there were a few tricks to it. First, I had to turn *off* ndiswrapper of course. That was easy: I have installed ndisgtk, so in the GUI, I just removed the driver. Same thing as 'sudo ndiswrapper -r net5416' at at command line
At that point, I could *not* see the wireless any more. This is because of the module 'acer_wmi'. The only problem acer_wmi causes on the AA1 is in the ability of Linux to see the Ath5k... but that is bad enough. A netbook without WIFI is not doing what it is supposed to be doing.
If you read through that bug, it says that the very latest kernel has the patch required to fix this rfkill issue. Will try and update this in a bit.
In the meantime: Simple solution is to blacklist it in /etc/modprobe.d. One line file:
steve@kara:/etc/modprobe.d$ more blacklist-acer-wmi
You could also just rmmod acer_wmi, and then 'modprobe ath5k' but blacklisting makes acer_wmi stay out between boots.
Ubuntu 9.04 with ath5k on the AA1 is a lovely thing. Wifi recovers from standby without any issues so far. Under Mint/ndiswrapper about 1 out of every 10 time the WIFI would go away some place, and require severe measures to get it back. It also seems to be faster finding and syncing with WAP's now.
It's working. Mostly
I did an 'sudo apt-get update | sudo apt-get -y dist-upgrade' and a new kernel came down: 2.6.28-11.39. if you were to look with 'uname -a' you'd think this was the same kernel, since uname drops the '.39'. Have to do a 'dpkg -l | grep -i 2.6.28-11' or something similar to see what is installed. I then erased my blacklist of the acer_wmi in /etc/modprobe.d (see above)
After the service I rebooted, and it still did not work. I manually did a 'modprobe ath5k', and it started working. puzzled, I looked in /etc/modprobe.d and wondered if the ndiswrapper file there was interfering. I did not put it there: Pretty sure it was created when I installed ndiswrapper. I deleted it (sudo delete /etc/modprobe.d/ndiswrapper) and rebooted.
Instant success. Even see the hidden wireless where I am right now.
The wireless blinking LED is not lit though. Not sure why, and don't really care right now. That is a problem for another day. I am just happy to have the Acer_wmi loading so I can see if that makes a difference in how much the fan runs.