When it’s about time for a new version of Ubuntu to arrive, usually I end up installing a late alpha or beta version before the final release. Recently I did get time to take a stab at working out some of the issues I have been having.

Desktop effects can’t be enabled after using external monitor (bug report)

Ubuntu’s desktop effects have always worked well on my Eee PC 901 laptop. But since plugging it into a TV via the VGA port, Compiz will not start even after the switching back to the internal display.
Attempting to enable effects causes Ubuntu to report “Desktop effects could not be enabled”. Running compiz from the terminal reports “Software rasterizer detected”.

This seams to be caused by the screen resolution utility changing my xorg.conf file in ways that break Compiz. I removed this section from my /etc/X11/xorg.conf file:

Bluetooth mouse doesn’t reconnect (bug report)
I have to remove and re-pair my Bluetooth mouse to get it to connect with Ubuntu after waking my laptop up from suspend. Recent updates seem to have fixed this!

PulseAudio issues

More here