I have similar  problem on a Aspire 4810T, BIOS V1.35:

[    4.144774]   Magic number: 0:523:375
[    4.144777]   hash matches 
/build/buildd/linux-2.6.32/drivers/base/power/main.c:471
[    4.144811] acpi LNXVIDEO:01: hash matches

Except that a second hash match is reported as well. The first supend
works but later suspends fail to resume. Sometimes the screen stays
black, sometimes the console is visible for a brief moment before the
screen remains black. Sometimes the backlight remains on with black
screen.

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Second resume after suspend issue in Lucid on Acer 3810TG
https://bugs.launchpad.net/bugs/651100
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