startx and Blank screen

"Shriram NK" <[email protected]>
Newsgroups gmane.linux.redhat.release.seawolf
Message-ID <[email protected]>
Hello,
I do not know if this is the proper forum, if not my apologies and a pointer to FAQ/user group to solve my problem will be greatly appreciated.

The problem:
I have a HP Pavillion N3390 Laptop
Monitor adapter - Silicon Lynx 3DM
Monitor - Unknown (14 " laptop display panel)
RH 7.1 being run
The OS has been installed and set to run in text mode.
After running 'Xconfigurator' and setting up Vertical frequencies, Display type, etc ; the configurator makes a 'test display' of KDE desktop properly. Subsequently when 'startx' is given the X session starts up, but within 5 seconds while its still initializing the peripherals, the screen goes blank. ctrl-alt-+ OR ctrl-alt-minus OR ctrl-alt-backspace do not seem to have any effect and I have to reboot. Doesnt even go back to text mode !!!

I have followed most readily accessible RH FAQs and XFree86 FAQs and tried various things without luck.
A solution to above will be greatly appreciated, an explanation of this peculiar behaviour, even more so.
regards
sriram
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