When using the xfwm compositor, anytime a terminal(xterm, aterm, gnome-terminal, Terminal) X freezes and I have to reboot, other programs run fine. Works fine when using xcompmgr instead. Reproducible: Always Steps to Reproduce: 1. start xfwm with compositor on 2. set a terminal to be transpent (using transset or xfwm moving opacity option) 3. Actual Results: X freezes, need to reboot Expected Results: terminal becomes transpent
This is a bug with your video driver.
The long answer: - I'm sure it's a video driver bug because a user space application cannot freeze a system and force you to reboot. - There are several similar reports with recent NVidia drivers (myself, both of my systems are affected by this bug) - xcompmgr has the same problem (try this, activate transparency using transset with xcompmgr and resize the window as fast as you can) - "nv" driver works fine although a lot slower.