I tried something else and I think I managed to kill two birds with one
stone. I upgraded my kernel to 2.6.30-rc4 (followed this guide:
http://nnutter.com/2009/05/fix-poor-intel-graphics-performance-on-
jaunty/ ) and not only resume from suspend seems to be working fine now
but it looks like the video performance is significantly improved too. I
haven't switched UXA on and compiz and fullscreen HD videos are smooth.
I'm not sure if hibernation works as I don't really use it and didn't
have a chance to test it yet. See also:
http://beranger.org/v3/wordpress/2009/05/04/jaunty-kernel-2630-fixes-
the-intel-video/

-- 
[gm45] Session lost on resume from sleep in Jaunty on Lenovo T500
https://bugs.launchpad.net/bugs/322202
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