I also have a x700 card

01:00.0 VGA compatible controller: ATI Technologies Inc Radeon Mobility
X700 (PCIE)

Since Jaunty, the proprietary fglrx driver doesn't support my card any
more and that was the only way, at that time, to have suspend/resume
working properly.

With Karmic, suspend/resume has begun to work reliably with the open
source ati driver.

Now I updated to Lucid and suspend/resume has stopped working (with
lucid 2.6.32-19-generic kernel it doesn't even sleep, it simply hangs
when pressing suspend, with karmic 2.6.31-20-generic kernel it sleeps
but doesn't wake up).

I'm currently downloading mainline kernel to see if it solves the
problem.

** Tags added: ati x700

-- 
suspend/resume failure (ATI Mobility Radeon X700, kernel 2.6.31-10 Karmic Coala)
https://bugs.launchpad.net/bugs/430245
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