As I have received the question several times in the last couple of weeks I would like to post here a small manual of the modifications necessary in Ubuntu 9.10 Karmic Koala UNR to run smoothly on an Asus EeePC 900a - at least on my one.
The original Ubuntu installation had the following two problems:
1. The WiFi/wireless key on the keyboard was not working properly
2. The microphone did not work properly
1. WiFi/wireless key on the keyboard
I was able to switch the wireless off but when switching it on I had to restart the computer before I was able to reconnect to the wireless network.
All I had to do was pass the following parameters to the kernel command line:
pciehp.pciehp_force=1 pciehp.pciehp_poll=1
The detailed steps:
1. sudo gedit /etc/default/grub
2. edit the line with GRUB_CMDLINE_LINUX_DEFAULT and change it to:
GRUB_CMDLINE_LINUX_DEFAULT="pciehp.pciehp_force=1 pciehp.pciehp_poll=1 quiet splash"
3. sudo update-grub2
4. Restart the system
Now you can toggle WiFi/wireless on and off - you get reconnected to the wireless when you switch it on again.
2. Adjusting the microphone
The microphone had a lot of background noise and the usage of Skype/Ekiga was not possible with the original setting.
I had to ajust the ALSA configuration file (/etc/modprobe.d/alsa-base.conf) in order to solve this issue
The detailed steps:
1. sudo gedit /etc/modprobe.d/alsa-base.conf
2. Search in the file whether a line including 'snd-hda-intel' exists, if so please delete that line
3. Add the following two lines to the configuration file:
===start here===
# eeePC 900a patch
options snd-hda-intel index=0 model=quanta
===end here===
4. Restart the system.
With these two changes my Asus EeePC 900a works very well with Ubuntu. Currently I only have some trouble with my UMTS device from Huawei (the E5830). Apart from that everything works very well and I like Ubuntu 9.10 a lot. I am looking forward to the Ubuntu 10.04
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