Just a hint for people that also have lockup problems and found this page through google:
Some of them are locking issues, which can be worked around by not using radeonfb, i.e. a radeon-specific kernel framebuffer module. Appending video="vesa" to the kernel helps in this case. Sorry for the bugspam. -- Lockup problems with ati driver on Radeon M300 https://launchpad.net/bugs/30447 -- kubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs
