From the bug-report there’s a simple solution to dual-screening on Hardy…
Users upgrading from Dapper Drake to Hardy Heron who have used Xinerama to support dual monitors now have to use a different method (xrandr I think). This isn’t mentioned in the release notes and the graphical tool for configuring dual monitors is under “Screen Resolution” in the System -> Preferences Menu. The point being that it is quite hard to find.
Users with multiple desktops appear to have add the following to the xorg.conf file “Screen” section:
Virtual 4000 2048
Then the screen resolution tool works fine for me.
Me too! Just to complete this (it’s all out there…):
Unfortunately, for creating dual-screen layouts there is still one manual configuration step required, which is to add a Virtual framebuffer size. The size needs to be equal or greater than the maximum combined size of your displays. For example, if you have two 1920×1200 monitors you wish to put side-by-side, you would add a Virtual line like this:Section "Screen" Identifier "Default Screen" Device "Configured Video Device" DefaultDepth 24 SubSection "Display" Depth 24 Virtual 3840 1200 EndSubSection EndSection
Note that setting Virtual to larger than 2048×2048 disables 3d acceleration (i.e., no Compiz).