INDI can control Meade DSI Pro I/II CCDs via the indi_dsi_ccd driver.
Under Ubuntu, you can install the driver via:
sudo add-apt-repository ppa:mutlaqja/ppa
sudo apt-get update
sudo apt-get install indi-dsi
The driver support basic capture and adjustment of gain.
Once you're connected, you can capture images as FITS from the camera.
Some users bug tracking system at SourceForge. (You can log in with a variety of existing accounts, including Google, Yahoo and OpenID.)