On my laptop (chaplet 5023 / p133) Xconfigurator segfaults with no usefull mesages at all. Kudzu (since the 6.9 beta's, 6.2 is fine) also hates this machine also see: bug 14455 and bug 14456. Xconfigurato crashing also is very likely the cause of Xsetup being skipped on this machine during a textinstall see bug 14557
I'll add a noprobe option for buggy hardware.
Added... specify "--noddcprobe" for buggy hardware.
Just tried the new Xconfigurator, the -noddcprobe fixes it. Although it would be nice if it would give some other error then segfaulting.
Does the one from http://people.redhat.com/teg/xc/ work any better?
Yes it just turns off the backlight like kudzu does instead of crashing ;|
Since that seem to be the correct DDC operation on your laptop, this means it works then :/ (it uses kudzu for DDC probing)