The new Ubuntu 11.10 is out as of yesterday, and naturally it is time for another upgrade. Because of the many tweaks ,  I decided for a fresh install, this time directly on the notebook harddisk instead of a flash card.
The live ISO worked nicely from the USB stick except for the WLAN, but that is only a minor nuisance since it works out of the box in a real installation. So the checklist is:
[x] WLAN Update 2012-03-01 The tireless folks at ubuntuforums found a way  to patch the old Ralink driver. I am not sure whether it works worse or better, so far I haven’t noticed any difference.
Update 2010-10-23 I found the WLAN initially to be somewhat unstable and it turns out that the driver issues in  and  still persist. However blacklisting them in /etc/modprobe.d/blacklist.conf and rebooting solves the problem:
Update 2010-11-02 That should be “most of the problem”. Under heavy load it starts dropping TCP connections.
[x] Sound level function keys
[x] Screen brightness function keys
Somewhat oddly the function keys don’t autorepeat while pressed, thus changing multiple levels requires multiple strokes.
[x] Touchpad right click (still doesn’t work, however the two-finger-tap works fine for a right click)
[x] Internal microphone
[ ] External microphone (have not tested yet)
[ ] Bluetooth (have not tested yet)
[x] Windows shares name resolution (not out of the box, but can be done, see )
[x] Video. Update 2011-11-22 After having tried several options and updates, I think the best option is to install the AMD drivers from the ‘Additional Drivers’ menu item but use Unity 2D (setting from the login screen). This keeps both the laptop cool (3D operation heats it up even on low usage) and produces the best results when playing videos.
[ ] Bluetooth Update 2011-12-31 Doesn’t work. Will post more as I find out
The default drivers work fine while the 3rd party drivers AMD drivers (‘Additional drivers’) caused stuttering video playback with VLC, so I am staying with the regular ones. Update 2011-11-07 After yesterdays update, the AMD drivers also work (note: not the post-release update). While playing videos, VLC shows a distinct tearing which is easily remedied via the “Tear free” option of the AMD catalyst control center
 Ubuntu 10.10 on the HP Probook 4720s
 Ubuntu 11.04 on the HP Probook 4720s
 Resolving smb server names
 RaLink RT3090 Wireless Woes on 11.10 b2