For what it is worth I have the same Problem 64-bit Ubuntu 9.10 fresh
install (No non open source drivers ) Compiz enabled..
Here is the output from lspci:
00:02.0 VGA compatible controller: Intel Corporation 82G33/G31 Express
Integrated Graphics Controller (rev 02)
Subsystem: Hewlett-Packard Company Device 2a69
Flags: bus master, fast devsel, latency 0, IRQ 24
Memory at fea00000 (32-bit, non-prefetchable) [size=512K]
I/O ports at cc00 [size=8]
Memory at d0000000 (32-bit, prefetchable) [size=256M]
Memory at fe900000 (32-bit, non-prefetchable) [size=1M]
Capabilities: [90] Message Signalled Interrupts: Mask- 64bit- Queue=0/0
Enable+
Capabilities: [d0] Power Management version 2
Kernel driver in use: i915
Kernel modules: i915
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Display won't wake up
https://bugs.launchpad.net/bugs/468367
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