Exactly same problem on Lenovo T410 with Ubuntu 12.04 64 bits.
Linux MyThinkPad-T410 3.2.0-30-generic #48-Ubuntu SMP Fri Aug 24
16:52:48 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated
Graphics Controller (rev 02) (prog-if 00 [VGA controller])
Subsystem: Lenovo Device 215a
Flags: bus master, fast devsel, latency 0, IRQ 43
Memory at f2000000 (64-bit, non-prefetchable) [size=4M]
Memory at d0000000 (64-bit, prefetchable) [size=256M]
I/O ports at 1800 [size=8]
Expansion ROM at <unassigned> [disabled]
Capabilities: <access denied>
Kernel driver in use: i915
Kernel modules: i915
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https://bugs.launchpad.net/bugs/1021035
Title:
black screen after waking up the screen
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